HUDSON TECHNOLOGIES INC /NY
10KSB, 1999-03-31
MACHINERY, EQUIPMENT & SUPPLIES
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                       Securities and Exchange Commission
                             Washington, D.C. 20549

                                   Form 10-KSB

[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE 
                                  ACT OF 1934

                   For the fiscal year ended December 31, 1998

                                       OR

 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
                              EXCHANGE ACT OF 1934

           For the transition period from ____________ to ____________

                         Commission file number 1-13412
                              ---------------------

                            Hudson Technologies, Inc.

                              ---------------------
        (Exact name of small business issuer as specified in its charter)

         New York                                            13-3641539
(State or other jurisdiction of                            (IRS Employer
 incorporation or organization)                        Identification number)

275 North Middletown Road
Pearl River, New York                                         10965
(address of principal executive offices)                    (ZIP Code)

  Small Business Issuer's telephone number, including area code: (914) 735-6000

        Securities registered pursuant to Section 12(b) of the Act: None
                                                                    ----

           Securities registered pursuant to Section 12(g) of the Act:

                          Common Stock, $0.01 par value
                          -----------------------------

Indicate by check mark whether the issuer (1) has filed all reports required to
be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during
the preceding twelve months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the last 90 days. Yes [X]  No [ ].

Indicate by check if disclosure of delinquent filers pursuant to Item 405 of
Regulation S-B is not contained herein, and will not be contained, to the best
of Small Business Issuer's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-KSB or any
amendment to this Form 10-KSB. [X]

The Small Business Issuer's revenues for the fiscal year ended December 31, 1998
were $23,311,000.

The aggregate market value of the Small Business Issuer's Common Stock held by
non-affiliates as of March 3, 1999 was approximately $10,329,000. As of March 3,
1999, there were 5,085,820 shares of the Small Business Issuer's Stock
Outstanding.

                    Documents incorporated by reference: None
================================================================================





                                       1
<PAGE>




                            Hudson Technologies, Inc.

                                      Index
<TABLE>
<CAPTION>
   Part                                                    Item                                                Page
   ----                                                    ----                                                ----
<S>                                    <C>                                                                      <C>
Part I.       Item 1 - Description of Business                                                                   3
              Item 2 - Description of Properties                                                                 7
              Item 3 - Legal Proceedings                                                                         8
              Item 4 - Submission of Matters to a Vote of Security Holders                                       9

Part II.      Item 5 - Market for the Registrant's Common Equity and Related Stockholder  Matters               10
              Item 6 - Management's Discussion and Analysis of Financial Condition                              11
                            and Results of Operations
              Item 7 - Financial Statements                                                                     16
              Item 8 - Changes in and Disagreements with Accountants on Accounting                              16
                            and Financial Disclosure

Part III.     Item 9 - Directors, Executive Officers of the Registrant, Promoters and Control Persons;          17
                            Compliance  with Section 16(a) of the Exchange Act
              Item 10 - Executive Compensation                                                                  19
              Item 11 - Security Ownership of Certain Beneficial Owners and Management                          24
              Item 12 - Certain Relationships and Related Transactions                                          25
              Item 13 - Exhibits and Reports on Form 8-K                                                        26

              Signatures                                                                                        27

              Financial Statements                                                                              28

</TABLE>









                                        2
<PAGE>


                                     Part I
                                     ------

Item 1.  Description of Business
- - - --------------------------------

General
Hudson Technologies, Inc., incorporated under the laws of New York on January
11, 1991, together with its subsidiaries (collectively, "Hudson" or the
"Company"), primarily sells refrigerants, provides RefrigerantSide(TM) Services
performed at a customer's site, consisting of system decontamination to remove
moisture, oils and other contaminants and recovery and reclamation of the
refrigerants used in commercial air conditioning and refrigeration systems. The
Company operates through its wholly owned subsidiaries Hudson Technologies
Company and Environmental Support Solutions, Inc. ("ESS").

The Company's Executive Offices are located at 275 North Middletown Road, Pearl
River, New York and its telephone number is (914) 735-6000.

Industry background

The production and use of refrigerants containing chlorofluorocarbons ("CFCs")
and hydrochlorofluorocarbons ("HCFCs"), the most commonly used refrigerants are
subject to extensive and changing regulation under the Clean Air Act (the
"Act"). The Act, which was amended during 1990 in response to evidence linking
the use of CFCs to damage to the earth's ozone layer, prohibits any person in
the course of maintaining, servicing, repairing and disposing of air
conditioning or refrigeration equipment, to knowingly vent or otherwise release
or dispose of ozone depleting substances used as refrigerants. That prohibition
also applies to substitute, non-ozone depleting, refrigerants. The Act further
requires the recovery of refrigerants used in residential, commercial and
industrial air conditioning and refrigeration systems.

In addition, the Act prohibited production of CFC refrigerants effective January
1, 1996 and limits the production of refrigerants containing HCFCs, which
production is scheduled to be phased out by the year 2030.

Owners, operators and companies servicing cooling equipment are responsible for
the integrity of their systems regardless of the refrigerant being used and for
the responsible management of their refrigerant.

Products and Services

Refrigerant Sales

The Company sells reclaimed and virgin (new) refrigerants to a variety of
customers in various segments of the air conditioning and refrigerant industry.
Virgin refrigerants are primarily purchased by the Company from E.I. DuPont de
Nemours and Company ("DuPont") as part of the Company's strategic alliance with
DuPont (see "Strategic Alliance" below), and resold by the Company, typically at
wholesale. In addition, the Company regularly purchases used or contaminated
refrigerants from many different sources, which refrigerants are then reclaimed,
using the Company's high volume reclamation equipment, and resold by the
Company.

RefrigerantSide(TM) Services

The Company provides services that are performed at a customer's site through
the use of portable, high volume, high-speed reclamation equipment, including
its patented Zugibeast(TM) reclamation machine. These services consist of
RefrigerantSide(TM) Services, which encompass system decontamination, and
refrigerant recovery and reclamation. The Company also provides complete
refrigerant management services, which include testing, banking, blending and
packaging services tailored to individual customer requirements. Hudson also
separates `crossed' (i.e.; commingled) refrigerants and provides re-usable
cylinder repair, hydrostatic testing, and refrigerant tracking services.

Environmental Compliance Management

Hudson's compliance management products and services, sold through ESS, include
software, training, consulting, and management services in the fields of
refrigerant tracking and management, hazardous materials, and air quality. The
Company anticipates the sale of ESS. (See Item 6 Management's Discussion and
Analysis of Financial Condition and Results of Operations - Acquisitions).







                                        3
<PAGE>



Hudson's Network

Hudson operates from a network of centers located in:

o  Hillburn, New York         -- Reclamation center
o  Congers, New York          -- Aerosol packaging
o  Rantoul, Illinois          -- Reclamation center and cylinder refurbishment
o  Charlotte, North Carolina  -- Reclamation center
o  Punta Gorda, Florida       -- Reclamation and refrigerant separation center
o  Baton Rouge, Louisiana     -- Reclamation center
o  Mesa, Arizona              -- Environmental compliance programs

Strategic Alliance

In January 1997, the Company entered into an Industrial Property Management
Segment Marketer Appointment and Agreement and Refrigeration Reclamation
Services Agreement with E.I. DuPont de Nemours and Company ("DuPont'), pursuant
to which the Company (i) provides recovery, reclamation, separation, packaging
and testing services directly to Du Pont for marketing through DuPont's
Authorized Distributor Network and (ii) markets DuPont's SUVA(TM) refrigerant
products to selected market segments together with the Company's reclamation and
refrigerant management services. Under the agreement, 100% of virgin
refrigerants provided to specified market segment customers must be purchased
from DuPont.

The Company has sold certain reclaimed refrigerants to DuPont.

During the years ended December 31, 1998 and 1997, revenues from DuPont
aggregated approximately $6,434,000 and $1,495,000,
respectively.

In addition, in January 1997, the Company entered into a Stock Purchase
Agreement with DuPont and DuPont Chemical and Energy Operations, Inc. ("DCEO")
pursuant to which the Company issued to DCEO 500,000 shares of Common Stock in
consideration of $3,500,000 in cash. Concurrently, the parties entered into a
Standstill Agreement, Shareholders' Agreement and Registration Agreement which,
among other things, provide that (i) subject to certain exceptions, neither
DuPont nor any corporation or entity controlled by DuPont will, directly or
indirectly, acquire any shares of any class of capital stock of the Company if
the effect of such acquisition would be to increase DuPont's aggregate voting
power to greater than 20% of the total combined voting power relating to any
election of directors; (ii) at DuPont's request, the Company will cause two
persons designated by DCEO and DuPont to be elected to the Company's Board of
Directors; and (iii) subject to certain exceptions, DuPont will have a five-year
right of first refusal to purchase shares of Common Stock sold by the Company's
principal shareholders. The Company also granted to DuPont certain demand and
"piggy-back" registration rights with respect to the shares.

Suppliers

The Company's financial performance is in part dependent on its ability to
obtain sufficient quantities of virgin and reclaimable refrigerants from
manufacturers, wholesalers, distributors, bulk gas brokers and from other
sources within the air conditioning and refrigeration and automotive aftermarket
industries, and on corresponding demand for reclaimed refrigerants. To the
extent that the Company is unable to obtain sufficient quantities of
refrigerants in the future, or resell reclaimed refrigerants at a profit, the
Company's financial condition and results of operations would be materially
adversely affected.

Customers

The Company provides its services to commercial, industrial and governmental
customers, as well as to refrigerant wholesalers, distributors, contractors and
to refrigeration equipment manufacturers. Agreements with larger customers
generally provide for standardized pricing for specified services.






                                        4
<PAGE>




For the years ended December 31, 1998 and 1997, the Company's five largest
customers accounted for an aggregate approximately 51% and 37%, respectively, of
the Company's revenues. For the years ended December 31, 1998 and 1997, two
customers accounted for approximately 42% and one customer accounting for
approximately 11% of the Company's revenues, respectively. The loss of a
principal customer would have a material adverse effect on the Company.

Marketing

Marketing programs are conducted through the efforts of the Company's executive
officers, Company sales personnel, and third parties. Hudson employs various
marketing methods, including direct mailings, technical bulletins, in-person
solicitation, print advertising, response to quotation requests and
participation in trade shows.

The Company's sales personnel are compensated on a commission basis with a
guaranteed minimum draw. The Company's executive officers devote significant
time and effort to customer relationships.

Competition

The Company competes primarily on the basis of price, breadth of services
offered (including RefrigerantSide(TM) Services and other on-site services), and
performance of its high volume, high-speed equipment used in its operations.

The Company competes with numerous regional companies, which provide refrigerant
recovery and/or reclamation services, as well as companies marketing reclaimed
and new alternative refrigerants. Certain of such competitors, including
National Refrigerants, Inc., Refron, Inc., and Environmental Technologies
Company, Inc., which may possess greater financial, marketing, distribution and
other resources for the sale and distribution of refrigerants than the Company
and, in some instances, provide services or products over a more extensive
geographic area than the Company.

The refrigerant recovery and reclamation industry is relatively new and emerging
competition from existing competitors and new market entrants is expected to
increase. Demand and market acceptance for Hudson's newly introduced
RefrigerantSide(TM) services, and for the Company's refrigerant management
products and services are subject to a high degree of uncertainty. There can be
no assurance that the Company will be able to compete successfully or penetrate
this market as rapidly as it anticipates.

Insurance

The Company carries insurance coverage the Company considers sufficient to
protect the Company's assets and operations. The Company currently maintains
general commercial liability insurance and excess liability coverage for claims
up to $7,000,000 per occurrence and $7,000,000 in the aggregate. There can be no
assurance that such insurance will be sufficient to cover potential claims or
that an adequate level of coverage will be available in the future at a
reasonable cost. The Company attempts to operate in a professional and prudent
manner and to reduce its liability risks through specific risk management
efforts, including employee training. Nevertheless, a partially or completely
uninsured claim against the Company, if successful and of sufficient magnitude,
would have a material adverse effect on the Company.

The refrigerant industry involves potentially significant risks of statutory and
common law liability for environmental damage and personal injury. The Company,
and in certain instances, its officers, directors and employees, may be subject
to claims arising from the Company's on-site or off-site services, including the
improper release, spillage, misuse or mishandling of refrigerants classified as
hazardous or non-hazardous substances or materials. The Company may be strictly
liable for damages, which could be substantial, regardless of whether it
exercised due care and complied with all relevant laws and regulations.

Hudson maintains environmental impairment insurance of $1,000,000 for events
occurring subsequent to November 1996. There can be no assurance that the
Company will not face claims resulting in substantial liability for which the
Company is uninsured, that hazardous substances or materials are not or will not
be present at the Company's facilities, or that the Company will not incur
liability for environmental impairment or personal injury (See `Legal
Proceedings').






                                       5
<PAGE>




Government Regulation

The business of refrigerant reclamation and management is subject to extensive,
stringent and frequently changing federal, state and local laws and substantial
regulation under these laws by governmental agencies, including the
Environmental Protection Agency (`EPA'), the United States Occupational Safety
and Health Administration and the United States Department of Transportation.

Among other things, these regulatory authorities impose requirements which
regulate the handling, packaging, labeling, transportation and disposal of
hazardous and non-hazardous materials and the health and safety of workers, and
require the Company and, in certain instances, its employees, to obtain and
maintain licenses in connection with its operations. This extensive regulatory
framework imposes significant compliance burdens and risks on the Company.

Hudson and its customers are subject to the requirements of the Clean Air Act,
and the regulations promulgated thereunder by the EPA, which make it unlawful
for any person in the course of maintaining, servicing, repairing, and disposing
of air conditioning or refrigeration equipment, to knowingly vent or otherwise
release or dispose of ozone depleting substances, and non-ozone depleting
substitutes, used as refrigerants.

Pursuant to the Clean Air Act, reclaimed refrigerant must satisfy the same
purity standards as newly manufactured refrigerants in accordance with standards
established by the Air Conditioning and Refrigeration Institute ("ARI") prior to
resale to a person other than the owner of the equipment from which it was
recovered. The ARI and the EPA administer certification programs pursuant to
which applicants are certified to reclaim refrigerants in compliance with ARI
standards. Under such programs, the ARI issues a certification for each
refrigerant and conducts periodic inspections and quality testing of reclaimed
refrigerants.

The Company has obtained ARI certification for most refrigerants at each of its
reclamation facilities, and is certified by the EPA. The Company is required to
submit periodic reports to the ARI and pay annual fees based on the number of
pounds of reclaimed refrigerants. Certification by the ARI is not currently
required to engage in the refrigerant management business.

During February 1996, the EPA published proposed regulations, which, if enacted,
would require participation in third-party certification programs similar to the
ARI program. Such proposed regulations would also require laboratories designed
to test refrigerant purity to undergo a certification process. Extensive
comments to these proposed regulations were received by the EPA. The EPA is
still considering these comments and no further or additional regulations have
been proposed or published.

In addition, the EPA has established a mandatory certification program for air
conditioning and refrigeration technicians. Hudson's technicians have applied
for or obtained such certification.

The Company is subject to regulations adopted by the Department of
Transportation ("DOT") which classify most refrigerants handled by the Company
as hazardous materials or substances and impose requirements for handling,
packaging, labeling and transporting refrigerants.

The Resource Conservation and Recovery Act of 1976 ("RCRA") requires that
facilities that treat, store or dispose of hazardous wastes comply with certain
operating standards. Before transportation and disposal of hazardous wastes
off-site, generators of such waste must package and label their shipments
consistent with detailed regulations and prepare a manifest identifying the
material and stating its destination. The transporter must deliver the hazardous
waste in accordance with the manifest to a facility with an appropriate RCRA
permit. Under RCRA, impurities removed from refrigerants consisting of oils
mixed with water and other contaminants are not presumed to be hazardous waste.

The Emergency Planning and Community Right-to-Know Act of 1986 requires the
annual reporting of Emergency and Hazardous Chemical Inventories (Tier II
reports) to the various states in which the Company operates and to file annual
Toxic Chemical Release Inventory Forms with the EPA.

The Comprehensive Environmental Response, Compensation and Liability Act of 1980
("CERCLA"), establishes liability for clean-up costs and environmental damages
to current and former facility owners and operators, as well as persons who
transport or arrange for transportation of hazardous substances. Almost all
states, including New York, have similar statutes regulating the handling and
storage of hazardous substances, hazardous wastes and non-hazardous wastes. Many
such statutes impose requirements, which are more stringent than their federal
counterparts. The Company could 










                                       6
<PAGE>





be subject to substantial liability under these statutes to private parties and
government entities, in some instances without any fault, for fines, remediation
costs and environmental damage, as a result of the mishandling, release, or
existence of any hazardous substances at any of its facilities.

The Occupational Safety and Health Act of 1970 mandates requirements for safe
work place for employees and special procedures and measures for the handling of
certain hazardous and toxic substances. State laws, in certain circumstances,
mandate additional measures for facilities handling specified materials. In
February 1999, an inspection was performed, at one of the Company's facilities,
by the Occupational Safety and Health Administration in response to a complaint
by an unnamed third party. The Company has not received a report on the results
of that inspection.

The Company believes that it is in substantial compliance with all material
regulations. However, there can be no assurance that Hudson will be able to
comply with applicable laws, regulations and licensing requirements. Failure to
comply could subject the Company to civil remedies, substantial fines,
penalties, injunction, or criminal sanctions.

Quality Assurance & Environmental Compliance

The Company utilizes in-house quality and regulatory compliance control
procedures. Hudson maintains its own analytical testing laboratories to assure
that reclaimed refrigerants comply with ARI purity standards and employs
portable testing equipment when performing on-site services to verify certain
quality specifications. The Company employs four persons engaged full-time in
quality control and to monitor the Company's operations for regulatory
compliance.

Employees

The Company has approximately 108 full and part-time employees including air
conditioning and refrigeration technicians, chemists, engineers, and sales and
administrative personnel.

None of the Company's employees are represented by a union. The Company believes
that its employee relations are good.

Patents and Proprietary Information

The Company holds a United States patent relating to various high-speed
equipment components and a process to reclaim refrigerants which expires in
January 2012. The Company believes that patent protection is important to its
business and has received an allowance for an additional patent relating to a
high speed refrigerant recovery process. Other recovery and reclamation
equipment and processes not covered by the Company's patents or patent
applications are currently in commercial use by the Company's competitors. There
can be no assurance as to the breadth or degree of protection that patents may
afford the Company, that any patent applications will result in issued patents
or that patents will not be circumvented or invalidated. Technological
development in the refrigerant industry may result in extensive patent filings
and a rapid rate of issuance of new patents. Although the Company believes that
its existing patents and the Company's equipment do not and will not infringe
patents or violate proprietary rights of others, it is possible that its
existing patent rights may not be valid or that infringement of existing or
future patents or violations of proprietary rights of others may occur. In the
event the Company's equipment infringe or are alleged to infringe patents or
other proprietary rights of others, the Company may be required to modify the
design of its equipment, obtain a license or defend a possible patent
infringement action. There can be no assurance that the Company will have the
financial or other resources necessary to enforce or defend a patent
infringement or proprietary rights violation action or that the Company will not
become liable for damages.

The Company also relies on trade secrets and proprietary know-how, and employs
various methods to protect its technology. However, such methods may not afford
complete protection and there can be no assurance that others will not
independently develop such know-how or obtain access to the Company's know-how,
concepts, ideas and documentation. Failure to protect its trade secrets could
have a material adverse effect on the Company.

Item 2.  Description of Properties
- - - ----------------------------------

The Company's headquarters is located in approximately 5,400 square feet of
leased commercial space at Pearl River, New York. The building is leased from an
unaffiliated third party pursuant to a three year agreement at an annual rental
of approximately $87,500 through January 2002.








                                       7
<PAGE>


The Company's Hillburn facility is located in approximately 21,000 square feet
of leased industrial space at Hillburn, New York. The building is leased from an
unaffiliated third party pursuant to a five-year agreement at an annual rental
of approximately $86,000 through May 2004.

In March 1995, the Company purchased, for $950,000, a facility in Ft.
Lauderdale, Florida, consisting of a 32,000 square foot building on
approximately 1.7 acres with rail and port access. The property was mortgaged
during 1996 for $700,000. Annual real estate taxes are approximately $24,000.
During November 1998, the Company ceased its principle operations in this
facility. The Company has entered into an agreement, pursuant to which it leases
its entire Florida facility to an unaffiliated third party at a monthly rental
of approximately $12,500.

The Company's Baton Rouge, Louisiana facility is located in a 20,000 square foot
building leased from an unaffiliated third party at an annual rental of
approximately $54,000 pursuant to an agreement expiring in April 2000.

The Company's Rantoul, Illinois facility is located in a 29,000 square foot
building leased from an unaffiliated third party at an annual rental of
approximately $ 78,000 pursuant to an agreement expiring in September 2002.

The Company's Charlotte, North Carolina facility is located in 12,000 foot
building leased from an unaffiliated third party pursuant to an agreement, which
expires in April 2000. Annual rent is approximately $42,000.

The Company's Punta Gorda, Florida separation facility is located in a 15,000
square foot building leased from an unaffiliated third party at an annual rent
of $60,000 pursuant to an agreement expiring in April 2001.

The Company's Mesa, Arizona office facility of about 4,000 square feet is leased
from an unaffiliated third party at an annual rental of approximately $49,000;
pursuant to an agreement expiring in February 2000.

In 1999, the Company opened a depot facility in Houston, Texas, which consists
of 1,555 square feet located in a larger building and is leased from an
unaffiliated third party at an annual rent of $6,700 pursuant to an agreement
which expires in March 2000.

During January 1997, the Company entered into a contract to purchase a 29,000
square foot facility on 5.15 acres in Congers, New York for about $1.4 million;
subject to approvals and ability to obtain financing. In October 1998, the
Company cancelled the contract pursuant to its contingency provision and remains
in occupancy on a month to month basis. The Company is leasing the facility for
approximately $14,000 per month during the interim period.

Item 3. Legal Proceedings
- - - -------------------------

During June 1995, United Water of New York Inc. ("United") alleged that it
discovered that two of its wells within close proximity to the Company's
facility showed elevated levels of refrigerant contamination, specifically
trichlorofluoromethane (R-11). During June 1996, United notified the Company
that it was seeking indemnification by the Company for costs incurred to date as
well as costs expected to be incurred in connection with United taking remedial
action. During July 1996, United threatened to institute legal action in the
event that the Company declined to settle this matter.

During August 1996, the Company received a letter from the New York State
Department of Environmental Conservation ("DEC") which stated that, in the
opinion of DEC, the Company was the cause of the contamination of United's
wells. The DEC letter stated that it is not aware of the extent of the
contamination or how the refrigerants entered the groundwater.

During December 1996, the Company and United entered into an interim settlement
agreement which provided for (a) reimbursement ($84,000) of United's operating
costs associated with certain wells through August 1996, (b) reimbursement,
subject to a dollar cap of $12,650 per month, of United's monthly operating
costs for certain wells from September 1996 through April 1997, and (c)
continued monitoring of R-11 refrigerant groundwater levels. Under the
agreement, United agreed not to commence legal action against the Company prior
to May 1, 1997. Neither party waived their rights as a result of the interim
agreement.

During August and September 1997, various proposals for possible further
remediation were discussed with the DEC and United in light of the reduction of
levels of R-11 in United's wells. Since August 1997 the levels of R-11 have
remained







                                       8
<PAGE>


nearly non-detectable and well under minimum contaminant levels established by
the State of New York. In January 1998, the Company agreed to install a
remediation system at the Company's facility that was previously proposed by
Company to remove any remaining R-11 levels in the groundwater under and around
the Company's facility. In August 1998 the DEC accepted the Company's proposal
and requested that the Company proceed with the installation of the system. The
Company is in the process of installing the system and is negotiating with the
DEC for a Consent Order to permit the operation of the system. The cost of this
remediation system is estimated to be in the range of approximately $80,000 to
$100,000.

During December 1997, United Water alleged that it discovered levels of
Dichlorodifluoromethane (R-12) in two of its wells within close proximity to the
Company's facility, and has alleged that the Company is the source. Sampling by
the Company of various monitoring wells installed around the Company's
facilities have been taken on a monthly basis since August 1996 and have failed
to detect any levels of R-12 in the groundwater in and around the Company's
facility.

In June 1998, United Water commenced an action against the Company in the
Supreme Court of the State of New York, Rockland County, seeking damages in the
amount of $1.2 Million allegedly sustained as a result of the foregoing. In
December 1998, United Water served an amended complaint asserting a claim
pursuant to the Resource Conservation and Recovery Act, 42 U.S.C. ss. 6901, et.
seq. ("RCRA"). The Company maintains that the allegations in the complaint are
without merit and that the damages claimed by United Water are significantly
overstated and bear little relation to any damages that United Water allegedly
sustained. The Company intends to vigorously defend this action. A motion has
been filed on behalf of the Company to dismiss the RCRA cause of action, which
motion is now pending.

There can be no assurance that this action, or any settlement thereof or the
finalization of the consent order will be resolved in a manner favorable to the
Company, or that the ultimate outcome of any legal action or settlement will not
have a material adverse effect on the Company's financial condition and results
of operations.

During March and April, 1998, six (6) complaints, each alleging violations of
Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, were filed by a
total of eight shareholders, on behalf of themselves and all others similarly
situated, against the Company and certain of its officers and directors in the
United States District Court for the Southern District of New York. Each of the
complaints alleges that the defendants, among other things, misrepresented
material information about the Company's financial results and prospects, and
its customer relationships. The complaints in five of these actions seek relief
on behalf of persons purchasing common stock between August 8, 1995 and August
15, 1997, and the complaint in the sixth action seeks relief on behalf of
persons purchasing common stock between March 31, 1997 and August 15, 1997. The
Company maintains that the allegations of wrongdoing alleged in the complaints
are without merit. The Company intends to vigorously defend the claims brought
against it and has retained the law firm of Davis, Polk and Wardwell for that
defense. A motion has been made on behalf of the Company to dismiss the claims
asserted, which motion is now pending.
<PAGE>

There can be no assurance that any of these actions, or the settlement thereof,
will be resolved in a manner favorable to the Company, or that the ultimate
outcome of any legal action or settlement will not have a material adverse
effect on the Company's financial condition and results of operations.

In May 1998, an action was commenced in the Supreme Court of the State of New
York, Rockland County, by BNY Financial Corporation ("BNY") against the Company
seeking damages in the amount of $49,051 for legal fees and expenses allegedly
incurred in connection with certain financial dealings and discussions engaged
in between the Company and BNY. The Company denies any liability for such
expenses, intends to defend the action vigorously, and has also asserted
counterclaims seeking the return of certain fees paid by the Company to BNY in
connection with those financial dealings.

There can be no assurance that this action or any settlement thereof, will be
resolved in a manner favorable to the Company.

In February 1999, an arbitration proceeding was commenced against Environmental
Support Solutions, Inc. ("ESS") by Mach 2 Systems, Inc. seeking recovery of
approximately $20,000 and other ancillary relief, for consulting and programming
services allegedly provided to ESS. ESS denies any liability for all such
amounts and intends to defend the action vigorously.

There can be no assurance that this action or any settlement thereof, will be
resolved in a manner favorable to ESS.

The Company and its subsidiaries are subject to various other claims and/or
lawsuits from both private and governmental parties arising from the ordinary
course of business; none of which are material.

Item 4. Submission of Matters to a Vote of Security Holders.
- - - -----------------------------------------------------------

Not Applicable.






                                       9
<PAGE>



                                     Part II
                                     -------

Item 5.  Market for Registrant's Common Equity and Related Stockholder Matters
- - - ------------------------------------------------------------------------------

The Common Stock has traded since November 1, 1994 on the NASDAQ Small-Cap
Market under the symbol `HDSN'. Since September 20, 1995, the Common Stock has
traded on the NASDAQ National Market. The following table sets forth, for the
periods indicated the range of the high and low bid prices for the Common Stock
as reported by NASDAQ. Such prices reflect inter-dealer quotations, without
retail mark-up, markdown or commission and may not necessarily represent actual
transactions.

- - - -----------------------------------------------------------------
                                            High           Low
- - - -----------------------------------------------------------------
1997
- - - -----------------------------------------------------------------
o   First Quarter                          $13 1/4        $5 3/8
- - - -----------------------------------------------------------------
o   Second Quarter                         $11 7/8        $5 5/8
- - - -----------------------------------------------------------------
o   Third Quarter                          $ 8            $5 1/4
- - - -----------------------------------------------------------------
o   Fourth Quarter                         $ 5 3/4        $2 7/8
- - - -----------------------------------------------------------------
1998
- - - -----------------------------------------------------------------
o   First Quarter                          $ 4 3/4        $3
- - - -----------------------------------------------------------------
o   Second Quarter                         $ 5 3/4        $3 1/2
- - - -----------------------------------------------------------------
o   Third Quarter                          $4 7/16        $2 1/2
- - - -----------------------------------------------------------------
o   Fourth Quarter                         $ 3 7/8        $1 1/2
- - - -----------------------------------------------------------------
1999
- - - -----------------------------------------------------------------
o   First Quarter (through March 3, 1999)  $ 2 1/4        $1 1/2
- - - -----------------------------------------------------------------


On March 3, 1999, the last sale price for the Common Stock as reported by the
NASDAQ National Market was $2.031 per share. The number of record holders of the
Company's Common Stock was approximately 250 as of March 3, 1999. The Company
believes that there are in excess of 4000 beneficial owners of its Common Stock.

To date, the Company has not declared or paid any cash dividends on its Common
Stock. The payment of dividends, if any in the future is within the discretion
of the Board of Directors and will depend upon the Company's earnings, its
capital requirements and financial condition, borrowing covenants, and other
relevant factors. The Company presently intends to retain all earnings, if any,
to finance the Company's operations and development of its business and does not
expect to declare or pay any cash dividends in the foreseeable future. In
addition, the Company has entered into a credit facility with CIT Group/Credit
Finance Group, Inc. ("CIT") which, among other things, restricts the Company's
ability to declare or pay any dividends on its capital stock. The Company has 
obtained a waiver from CIT to permit the payment of dividends on its Series A 
Preferred Stock. (See Item 6 "Management's Discussion and Analysis of Financial 
Conditions and Results of Operations" - Liquidity).




                                       10
<PAGE>



Item 6.  Management's Discussion and Analysis of Financial Condition and Results
- - - --------------------------------------------------------------------------------
         of Operations.
         --------------

Safe Harbor Statement Under The Private Securities Litigation Reform Act of 1995

Certain statements contained in this section and elsewhere in this Form 10-KSB
constitute "forward looking statements" within the meaning of the Private
Securities Litigation Reform Act of 1995. Such forward-looking statements
involve a number of known and unknown risks, uncertainties and other factors
which may cause the actual results, performance or achievements of the Company
to be materially different from any future results, performance or achievements
expressed or implied by such forward-looking statements. Such factors include,
but are not limited to, changes in the markets for refrigerants (including
unfavorable market conditions adversely affecting the demand for, and the price
of refrigerants), regulatory and economic factors, including the need of the
Company to obtain additional working capital, seasonality, competition,
litigation, the nature of supplier or customer arrangements which become
available to the Company in the future, adverse weather conditions, possible
technological obsolescence of existing products and services, possible reduction
in the carrying value of long-lived assets, estimates of the useful life of its
assets, potential environmental liability, customer concentration and other
risks detailed in the Company's other periodic reports filed with the Securities
and Exchange Commission. Readers are cautioned not to place undue reliance on
these forward-looking statements, which speak only as of the date the statement
was made.

Overview

Historically, the Company has derived a majority of its revenues from the sale
of refrigerants. However, since 1997, the Company has been developing a service
offering known as RefrigerantSide(TM) Services. Refrigerant sales do continue to
represent a majority of the Company's revenues. The Company also provides
refrigerant management services, consisting principally of recovery and
reclamation of refrigerant used in commercial air conditioning and refrigeration
systems. At the beginning of 1997, the Company was carrying significant
inventories of refrigerant, which it was unable to sell at a profit during 1997
due to declining market prices caused, in part, by adverse weather conditions.
Accordingly, during the second quarter of 1997, the Company recognized a write
down of its inventory to net realizable value. During the third quarter of 1997,
in an attempt to lower its exposure to market conditions, the Company began to
increase its inventory turnover rate. As a result, the Company's inventories
declined, primarily from increased sales of refrigerants, from approximately
$9,062,000 at January 1, 1997 to approximately $3,755,000 at December 31, 1997.
Subsequent sales of refrigerant have resulted in a further decline of inventory
to $3,284,000 at December 31, 1998.

In 1997, the Company began to review its operations and focus its sales and
marketing efforts towards the expansion of its service sales. For the year ended
December 31, 1998, refrigerant sales continue to represent a substantial portion
of the Company's total revenues. While sales of refrigerants will continue to
represent a significant portion of the Company's sales, service revenues, which
management believes represents the Company's long term growth potential, have
begun to increase in both absolute dollars and as a percentage of the Company's
total revenues. The Company believes that there will be a trend towards lower
sales prices and lower gross profit margins on refrigerant sales in the
foreseeable future, which will continue to have an adverse affect on operating
results. (See "Liquidity and Capital Resources".)

Results of Operations

Year ended December 31, 1998 as compared to year ended December 31, 1997
- - - ------------------------------------------------------------------------ 

Revenues for 1998 were $23,311,000, an increase of $306,000 or 1% from the
$23,005,000 reported during the comparable 1997 period. The increase was
primarily attributable to an increase in service sales.

Cost of sales for 1998 were $17,585,000, a decrease of $2,683,000 or 13% from
the $20,268,000 reported during the comparable 1997 period. As a percentage of
sales, cost of sales were 75% of revenues for 1998, a decrease from the 88%
reported for the comparable 1997 period. The decrease in both dollars and
percentage of revenues in 1998 as compared to 1997 was primarily attributable to
a slight increase in gross profits on refrigerant sales, that primarily occurred
during the first six months of 1998 due to favorable market conditions, an
increase in service sales and the absence of a write-down of inventory carrying
values to net realizable value by $1,443,000 in 1997.

Operating expenses for 1998 were $8,115,000, a decrease of $8,338,000 or 51%
from the $16,453,000 reported during the comparable 1997 period. The decrease
was attributable to the recognition, in 1997, of a non cash, non recurring







                                       11
<PAGE>


charge to operations for an impairment of its goodwill and intangible assets in
the amount of $7,298,000, a reduction in professional fees and depreciation and
amortization offset by an increase in payroll and related expenses.

Other income (expense) for 1998 was ($267,000), a decrease of $347,000 or 57%
from the ($614,000) reported during the comparable 1997 period. Other income
(expense) includes interest expense of $399,000 and $726,000 for 1998 and 1997,
respectively, offset by other income of $132,000 and $112,000 for 1998 and 1997,
respectively. The decrease in interest expense is primarily attributed to a
decrease in borrowings during 1998 as compared to 1997, and the lower financing
rates associated with the CIT credit facility. Other income primarily relates to
sublease rental income.

Income taxes for 1998 were none as compared to $1,958,000 reported during the
comparable 1997 period. In 1997, income taxes of $1,958,000 were attributed to
the Company recognizing a non cash, non recurring valuation allowance primarily
associated with the deferred tax asset acquired in the 1995 acquisition of
Refrigerant Reclamation Corporation of America, Inc. ("RRCA"). In addition, the
Company recognized a reserve allowance against the tax benefit for the 1998 and
1997 losses. The tax benefits associated with the Company's net operating loss
carry forwards would be recognized to the extent that the Company recognizes net
income in future periods.

Net loss for 1998 was $2,656,000 a decrease of $13,632,000 from the $16,288,000
net loss reported during the comparable 1997 period. The decrease was
attributable mainly to an increase in service sales, higher gross profits on
refrigerant sales which occurred during the first six months of 1998 due to
favorable market conditions and the lack of, in 1998, a reduction of inventory
values to net realizable value, the recognition of a non cash, non recurring
charge to operations for a write-down of the Company's goodwill and intangible
assets and deferred tax asset in the aggregate of $9,276,000.

Liquidity and Capital Resources

At December 31, 1998, the Company had working capital of approximately $53,000,
a decrease of $1,386,000 or 96% from the $1,439,000 at December 31, 1997. The
decrease in working capital is primarily attributable to the net loss incurred
during the year ended December 31, 1998, offset by the conversion of short term
debt to long term debt resulting from the new credit facility with CIT. A
principal component of current assets is inventory. As of December 31, 1998, the
Company had inventories of $3,284,000, a decrease of $471,000 or 13% from the
$3,755,000 at December 31, 1997. Commencing in the third quarter of 1997, the
Company began to increase its inventory turnover rate and has less inventory
than historically maintained. The Company's ability to sell and replace its
inventory and the prices at which it can be sold are subject, among other
things, to current market conditions (See Seasonality and Fluctuations in
Operating Results). The Company has historically financed its working capital
requirements through cash flows from operations, the issuance of debt and equity
securities, bank borrowings and loans from officers.

Net cash provided by operating activities was $574,000 for 1998 compared with a
net cash used in operating activities of $1,586,000 for the comparable 1997
period. Net cash provided by operating activities was attributable mainly to the
reduction of inventories, an increase in accounts payable and accrued expenses
for the 1998 period.

Net cash used in investing activities was $591,000 for 1998, compared with net
cash used in operating activities of $1,126,000 for the prior comparable 1997
period. The net cash usage consisted primarily of equipment additions.

Net cash provided by financing activities was $167,000 for 1998 compared with
net cash used by financing activities of $256,000 for the comparable 1997
period. The net cash provided by financing activities primarily consisted of an
increase in long term debt for the 1998 period.

At December 31, 1998, the Company had cash and equivalents of $776,000.

During 1996, the Company obtained financing from two lending institutions which
enabled it to rent an additional $1.7 million of equipment under terms of
operating leases. Hudson utilized these facilities to acquire automated aerosol
packaging equipment of approximately $1,000,000, ten refrigerant gas bulk-tank
storage units of approximately $400,000, and other industrial equipment of
$300,000. (See Note 10 to the Notes to the Consolidated Financial Statements).

In connection with its bankruptcy reorganization in June 1994, prior to its
acquisition by Hudson, Refrigerant Reclamation Corporation of America ("RRCA") 
has obligations as modified by a settlement during April 1996, payable in 
periodic payments to bankruptcy creditors through July 2000.










                                       12
<PAGE>


During 1996, the Company mortgaged its property and building located in Ft.
Lauderdale with Turnberry Savings Bank, NA. The mortgage of $675,000 at December
31, 1998 bears interest rate of 9.25% and is repayable over 20 years through
January 2017 (See Note 8 to the Notes to the Consolidated Financial Statements).

During January 1997, in connection with the execution of various agreements with
E.I. DuPont de Nemours ("DuPont'), the Company obtained additional equity funds
of $3,500,000 from an affiliate of DuPont (see Note 9 to the Notes to the
Consolidated Financial Statements). Proceeds were primarily utilized to retire
debt.

During January 1997, the Company entered into a contract to purchase a 29,000
square foot facility on 5.15 acres in Congers, New York for about $1.4 million;
subject to approvals and ability to obtain financing. In October 1998, the
Company cancelled the contract pursuant to its contingency provision and remains
in occupancy pursuant to a monthly lease until terminated no earlier than May 1,
1999.

During May 1997, certain officers of Hudson made unsecured loans in the
aggregate principal amount of $585,000 to the Company. Such loans were due on
demand and bore interest from 8% to 8.88% per annum. On August 12, 1997, the
Company repaid the loans together with outstanding interest. 

During May 1998, certain officers of Hudson made unsecured loans in the
aggregate principal amount of $300,000 to the Company. Such loans were due on
demand and bore interest at 10% per annum. On June 30, 1998, the Company repaid
the loans together with outstanding interest.

In February 1999, a former director made an unsecured loan in the aggregate
principal amount of $365,000 to the Company. Such loan is due on demand and
bears interest at 12% per annum.

On April 28, 1998, the Company entered into a credit facility with CIT
Group/Credit Finance Group, Inc. ("CIT") which makes available borrowings to the
Company of up to $5,000,000 and increases to $6,500,000 in 1999. The facility
requires minimum borrowings of $1,250,000. The facility provides for a revolving
line of credit and a six-year term loan and expires in April 2001. Advances
under the revolving line of credit are limited to (i) 80% of eligible trade
accounts receivable and (ii) 50% of eligible inventory (which inventory amount
shall not exceed 200% of eligible trade accounts receivable or $3,250,000). As
of December 31, 1998, the Company has availability under its revolving line of
credit of approximately $399,000. Advances, available to the Company, under the
term loan (currently approximately $857,000) are based on existing fixed asset
valuations and future advances under the term loan up to an additional
$1,000,000 are based on future capital expenditures. As of December 31, 1998,
the Company had $1,621,000 outstanding under this facility. The facility bears
interest at the prime rate plus 1.5%, 10% at December 31, 1998, and
substantially all of the Company's assets are pledged as collateral for
obligations to CIT. In addition, among other things, the agreements restrict the
Company's ability to declare or pay any dividends on its capital stock. The
Company has obtained a waiver from CIT to permit the payment of dividends on 
its Series A Preferred Stock. This facility replaces the Company's previous 
line of credit with MTB Bank ("MTB"). 
<PAGE>

In connection with the loan agreements, the Company issued to CIT warrants to
purchase 30,000 shares of the Company's common stock at an exercise price equal
to 110% of the then fair market value of the stock, which on the date of
issuance was $4.33 per share, and expires April 29, 2001. The value of the
warrants were not deemed to be material.

During the third quarter of 1998, the Company completed the planned closure of
two of its reclamation facilities. The Company's Sparks, Nevada facility was
closed on October 20, 1998 and the Fort Lauderdale, Florida facility was closed
in November 1998. The closure of these facilities did not result in a material
effect to the Company's results of operations or financial position. The Company
is continuing to evaluate each of its other operating facilities based on its
emphasis on the expansion of its service sales. As a result, the Company may
discontinue certain operations which it believes do not support the growth of
service sales and, in doing so, may incur future charges to operations.

On March 16, 1999, the Shareholders of the Company approved an amendment to the
Certificate of Incorporation to authorize the issuance of 5,000,000 shares of
Preferred Stock. This authorization allows the Board of Directors to, among
other things, set the number of shares, the dividend rate and the voting rights
on any issuance of Preferred Stock.

On March 30, 1999, the Company completed the sale of 65,000 shares of its 
Series A Preferred Stock, with a liquidation value of $100 per share, to 
Fleming U.S. Discovery Fund III, LP and Fleming U.S. Discovery Offshore 
Fund III, LP. The gross proceeds from the sale of the Preferred Stock is 
$6,500,000. The Preferred Stock has voting rights, with Common Stock, 








                                       13
<PAGE>



on an as if converted basis up to 29% of the then outstanding voting shares. 
The holders of the Preferred Stock will provide the CEO and Secretary of the
Company a proxy to vote any additional shares above the 29% limitation. The
Preferred Stock carries a dividend rate of 7%, which will increase to 16% on the
fifth anniversary date, and converts to Common Stock at a rate of $2.375 per
share, which is 27% above the closing market price of Common Stock as of March
29, 1999. The conversion rate may be subject to certain antidilution provisions,
as defined in the agreement. The Company has engaged an advisor to facilitate
the Company's efforts in connection with this transaction. The success fee for
these services was $455,000 and warrants to purchase 136,842 shares of the
Company's Common Stock at an exercise price per share of $2.73. The Company will
use the net proceeds from the issuance of Preferred Stock to expand its
RefrigerantSide(TM) Services and for working capital purposes.

The Company will pay dividends on the Preferred Stock, semi annually, either in
cash or additional shares, at the Company's option, during the first two years
after which the dividends will be paid in cash. The Company may redeem the
Preferred Stock on March 31, 2004 either in cash or shares of Common Stock
valued at 90% of the average trading price of the Common Stock for the 30 days
preceding March 31, 2004. In addition, after March 24, 2001, the Company may
call the Preferred Stock if the market price of the Common Stock is equal or
greater than 250% of the conversion price and the Common Stock has traded with
an average daily volume in excess of 20,000 shares for a period of thirty
consecutive days.

The Company has provided certain registration, preemptive and tag along rights
to the holders of the Preferred Stock. The holders of the Preferred Stock,
voting as a separate class, have the right to elect up to two members to the
Company's Board of Directors or at their option, to designate up to two advisors
to the Company's Board of Directors who will have the right to attend and
observe meetings of the Board of Directors.

The Company believes that its cash flow from operations, together with the
proceeds from the sale of its Preferred Stock, and its credit facility, will be
sufficient to satisfy the Company's working capital requirements and proposed
expansion of its service business for the next year. Any additional expansion or
acquisition opportunities that may arise in the future may affect the Company's
future capital needs.  

Acquisitions

In August 1995, the Company acquired RRCA. The purchase price was approximately
$6,068,000, consisting of cash of $1,250,000, a promissory note in the principal
amount of $750,000 repaid in December 1995 and 174,964 shares of common stock.
The acquisition was accounted for as a purchase with the assets acquired and
liabilities assumed were recorded at fair values, resulting in an excess of cost
over assets acquired of approximately $4,000,000.

In April 1996, the Company acquired all the outstanding capital stock of ESS, a
developer and provider of environmental software, training, and management
services in consideration of $2,375,000, consisting of $700,000 in cash and
promissory notes in the principal amount of $1,675,000 which were repaid during
October 1996. The acquisition was accounted for as a purchase with the assets
acquired and liabilities assumed were recorded at fair values, resulting in an
excess of cost over assets acquired of approximately $800,000.

In June 1996, ESS acquired all the net assets, subject to liabilities, of
E-Soft, Inc. ("E-Soft"), a developer and marketer of software programs related
to hazardous material management, in consideration of a cash payment of $50,000
and 41,560 shares of common stock with the acquired assets and liabilities were
recorded at fair values, resulting in an excess of cost over assets acquired of
approximately $500,000.

Effective March 19, 1999, the Company sold 75% of its stock ownership in ESS to
one of its founders. The consideration for the Company's sale of its interest
was $100,000 in cash and a six year note in the amount of $380,000. It is not
anticipated that the Company will be involved in or control the operations of
ESS. The Company does not believe that this sale has a material effect on the
Company's financial condition or results of operations.

In July 1996, the Company acquired all the outstanding common stock of GRR; a
refrigerant reclamation and recovery company in consideration of 20,000 shares
of the common stock resulting in an excess of cost over assets acquired of
approximately $100,000. Concurrent with the acquisition, the Company purchased,
for nominal consideration, all the net assets, subject to liabilities, of GRR.

In 1997, the Company recognized a non-cash, non-recurring charge to operations
for the excess of cost over the assets acquired for each of its acquisitions in
the aggregate amount of $7,298,000.








                                       14
<PAGE>


Inflation

Inflation has not historically had a material impact on the Company's
operations.

Reliance on Suppliers and Customers

The Company's financial performance is in part dependent on its ability to
obtain sufficient quantities of virgin and reclaimable refrigerants from
manufacturers, wholesalers, distributors, bulk gas brokers, and from other
sources within the air conditioning and refrigeration and automotive aftermarket
industries, and on corresponding demand for refrigerants. To the extent that the
Company is unable to obtain sufficient quantities of refrigerants in the future,
or resell reclaimed refrigerants at a profit, the Company's financial condition
and results of operations would be materially adversely affected. The loss of a
principal customer would have a material adverse effect on the Company.

During January 1997, the Company entered into agreements with DuPont to market
DuPont's SUVA(TM) refrigerants. Under the agreement, 100% of virgin refrigerants
provided to specified market segment customers must be purchased from DuPont.
(See "Description of Business Strategic Alliance").

During the years ended December 31, 1998 and 1997, two and one customers
accounted for 42% and 11%, respectively, of the Company's revenues.

Seasonality and Fluctuations in Operating Results

The Company's operating results vary from period to period as a result of
weather conditions, requirements of potential customers, non-recurring
refrigerant sales and service, availability and price of refrigerant products
(virgin or reclaimable); changes in reclamation technology and regulations,
timing in introduction and/or retrofit or replacement of CFC-based refrigeration
equipment by domestic users of refrigerants, the rate of expansion of the
Company's operations, and by other factors. The Company's business has
historically been seasonal in nature with peak sales of refrigerants occurring
in the first half of each year. Accordingly, the second half of the year results
of operations have reflected losses. Delays in securing adequate supplies of
refrigerants at peak demand periods, lack of refrigerant demand, increased
expenses, and declining refrigerant prices could result in significant losses.
There can be no assurance that the foregoing factors will not occur and result
in a material adverse affect on the Company's financial position and significant
losses.

Year 2000 Compliance

The Company uses various types of technology in the operations of its business.
Some of this technology incorporates date identification functions; however,
many of these date identification functions were developed to use only two
digits to identify a year. These date identifications functions, if not
corrected, could cause their related technologies to fail or create erroneous
results on or before January 1, 2000.

The Company is currently assessing and modifying its computer, production and
facility systems and business processes to provide for their continued
functionality at the Year 2000. The Company is also continuing to assess the
readiness of third parties and is seeking to address the Year 2000 issue with
those entities. However, the Company has no control over the actions taken by
these parties, and accordingly, there can be no assurance that all third parties
with which the Company does business will successfully resolve all of the Year
2000 compliance issues. The Company is augmenting previously scheduled computer
maintenance with procedures designed to locate and correct Year 2000 problems.
The Company continues to expect that substantially all new system upgrades or
reprogramming efforts will be completed by June 30, 1999. The costs associated
with these procedures have not been and are not expected to be material to the
Company's financial condition or results of operations and such costs have been
expensed as incurred.

The Company believes that modification of existing software and conversions to
new software should result in Year 2000 compliance. However, given the
complexity of the Year 2000 issue, the impact on business operations due to
failure by the Company to achieve compliance or failure by external entities,
such as suppliers and vendors, to achieve compliance, which the Company cannot
control, could adversely affect the Company's future results of operations.
There can be no assurance that the Company will be entirely successful with its
compliance.










                                       15
<PAGE>



The Company's intention is to address its Year 2000 issues prior to being
affected by them. The Company has attempted to identify its exposure to the Year
2000 issue but there may be other unforeseen risks that the Company may not have
identified. However, if the Company identifies significant risks associated with
Year 2000 compliance issues or if the progress of its current projects deviates
from the expected timeline, the Company will develop a contingency plan at that
time. There can be no assurance that the Company's plans or contingency plan
will be entirely successful.

Recent Accounting Pronouncements

In June 1998, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 133, "Accounting for Derivative Instruments
and Hedging Activities," which requires entities to recognize all derivatives as
either assets or liabilities in the statement of financial position and measure
those instruments at fair value. SFAS No. 133 is effective for all fiscal years
beginning after June 15, 1999. The Company is currently reviewing SFAS No. 133
and has of yet been unable to fully evaluate the impact, if any, it may have on
future operating results or financial statement disclosures.

Item 7. Financial Statements
- - - ----------------------------

The financial statements appear in a separate section of this report following
Part III.

Item 8. Changes in and Disagreements with Accountants on Accounting and
- - - -----------------------------------------------------------------------     
        Financial Disclosure.
        --------------------
None















                                       16
<PAGE>


                                    Part III


Item 9. Directors, Executive Officers of the Registrant, Promoters and Control
Persons; Compliance with Section 16(a) of the Exchange Act

The following table sets forth information with respect to the directors and
officers of the Company:

- - - --------------------------------------------------------------------------------
        Name             Age                    Position
- - - --------------------------------------------------------------------------------
Kevin J. Zugibe          35   Chairman of the Board and Chief Executive Officer
- - - --------------------------------------------------------------------------------
Eugene J. Tonkovich      58   President and Chief Operating Officer
- - - --------------------------------------------------------------------------------
Thomas P. Zugibe         46   Executive Vice President and Director
- - - --------------------------------------------------------------------------------
Stephen P. Mandracchia   39   Executive Vice President and Secretary
- - - --------------------------------------------------------------------------------
Brian F. Coleman         37   Vice President and Chief Financial Officer
- - - --------------------------------------------------------------------------------
Walter A. Phillips       46   Vice President Marketing and Strategic Planning
- - - --------------------------------------------------------------------------------
Robert Johnson           41   Vice President and Director
- - - --------------------------------------------------------------------------------
Harry C. Schell          64   Director
- - - --------------------------------------------------------------------------------
Vincent Abbatecola       50   Director
- - - --------------------------------------------------------------------------------
Otto C. Morch            65   Director
- - - --------------------------------------------------------------------------------
Dominic J. Monetta       57   Director
- - - --------------------------------------------------------------------------------


Kevin T. Zugibe, P.E. is a founder of the Company and has been a director,
President and Chief Executive Officer of the Company since its inception in
1991. Since May 1994, Mr. Zugibe has devoted his full business time to the
Company's affairs. From May 1987 to May 1994, Mr. Zugibe was employed as a power
engineer with Orange and Rockland Utilities, Inc. Mr. Zugibe is a licensed
professional engineer, and from December 1990 to May 1994, he was a member of
Kevin J. Zugibe & Associates, a professional engineering firm. Kevin J. Zugibe
and Thomas P. Zugibe are brothers.

Eugene J. Tonkovich has been President and Chief Operating Officer of the
Company since April 1998. Prior to joining the Company, Mr. Tonkovich was the
President of the Electrical Group of General Cable Corporation. Mr. Tonkovich is
currently a director of King Wire, Inc., a Chicago based wire specialist firm,
and a Director of the Tappan Group and New Canaan Investors, L L C.

Thomas P. Zugibe has been a Vice President of the Company since its inception in
1991 and a director since April 1995. Mr. Zugibe is responsible for assuring
compliance by the Company with laws and regulations pertaining to its
operations. Prior to May 1995, he devoted only a portion of his business time to
the affairs of the Company. Since that date, Mr. Zugibe has been employed by the
Company on a full time basis. He has been engaged in the practice of law in the
State of New York since 1980 and is on extended leave from the law firm of
Ferraro, Zugibe, and Albrecht, Garnerville, New York.

Stephen P. Mandracchia has been a Vice President of the Company since January
1993 and Secretary of the Company since April 1995. Mr. Mandracchia served as a
director from June 1994 until August 1996. Mr. Mandracchia is responsible for
corporate, administrative and regulatory legal affairs of the Company. Mr.
Mandracchia was a member of the law firm of Martin, Vandewalle, Donohue,
Mandracchia & McGahan, Great Neck, New York until December 31, 1995 (having been
affiliated with such firm since August 1983), and prior to September 1995
devoted only a portion of his business time to the Company's affairs.

Brian F. Coleman has been Vice President and Chief Financial Officer of the
Company since May 1997. Prior to joining the Company, Mr. Coleman was a Partner
with BDO Seidman, LLP, the Company's independent auditors.

Walter A. Phillips has been Vice President of Sales and Marketing of the Company
since October 1996. Prior to joining the Company, Mr. Phillips was employed in
various sales and marketing roles with York International.

Robert Johnson has been a director of the Company and Vice President since April
1996. Mr. Johnson founded and is President of Environmental Support Solutions,
Inc., a company which develops and provides environmental software,







                                       17
<PAGE>



training and consulting services, since March 1994. From February 1979 to March
1994, Mr. Johnson was an Operations Manager for the Arizona Region of Carrier
Corporation's Building Systems Services. Mr. Johnson resigned as an officer and 
director of the Company, effective March 19, 1999.

Vincent P. Abbatecola has been a director of the Company since June 1994. Mr.
Abbatecola is the owner of Abbey Ice & Spring Water Company, Spring Valley, New
York, where he has been employed since May 1971.

Otto C. Morch has been a director of the Company since March 1996. Mr. Morch was
a Senior Vice President, of Commercial Banking at Provident Bank and retired
from that position in December 1997.

Dominic J. Monetta has been a director of the Company since April 1996. Since
August 1993, Mr. Monetta has been the President of Resource Alternatives, Inc.,
a corporate development firm concentrating on solving management and
technological problems facing chief executive officers and their senior
executives. From December 1991 to May 1993, Mr. Monetta served as the Director
of Defense Research and Engineering for Research and Advanced Technology for the
United States Department of Defense. From June 1989 to December 1991, Mr.
Monetta served as the Director of the Office of New Production Reactors of the
United States Department of Energy.

Harry C. Schell has been a director of the Company since August 1998. Mr. Schell
is the former chairman and chief executive officer of BICC Cables Corporation,
and has served on the board of directors of the BICC Group (London), Phelps
Dodge Industries, the National Electrical Manufacturers Association and the
United Way of Rockland (New York).

The Company has established a Stock Option Committee, which administers the
Company's Stock Option Plan. The members of such Committee are Messrs.
Abbatecola and Morch. The Company also has an Audit Committee of the Board of
Directors, which supervises the audit and financial procedures of the Company.
The Audit Committee is comprised of Messrs. Abbatecola and Morch. During 1997,
the Company established an Executive Committee for considering and determining
the compensation of the Board of Directors, the President/CEO and Executive Vice
President. The Executive Committee members are Messrs. Kevin and Thomas Zugibe,
Monetta and Morch. During 1997, the Company also established a Safety Committee,
to review, oversee and direct the implementation of the Company's Environmental,
Health and Safety policies, plans and procedures. The Safety Committee consists
of Messrs. Thomas Zugibe, Monetta and Johnson.

The By-laws of the Company provide that the Board of Directors is divided into
two classes. Each class is to have a term of two years, with the term of each
class expiring in successive years, and is to consist, as nearly as possible, of
one-half of the number of directors constituting the entire Board. The By-laws
provide for a Board of seven members (subject to increase or decrease by a
resolution adopted by the shareholders). Accordingly, one class consists of
three directors and the second class consists of four directors.

The Company currently maintains directors and officers liability insurance for
covered claims up to $2,000,000 in the aggregate.







                                       18
<PAGE>


Item 10. Executive Compensation
- - - -------------------------------

The following table discloses the compensation for the Company's Chief Executive
Officer and each officer that earned over $100,000 during such years (the "Named
Executives").
<TABLE>
<CAPTION>

Summary Compensation                                                                            
Table                                                                                            Long Term Compensation
                                                                                                          Awards
                                                                      Annual Compensation(1)     --------------------------
                                                                      ----------------------      Securities Underlying
             Name                         Position             Year      Salary       Bonus             Options
             ----                         --------             ----      ------       -----             -------
<S>                                                           <C>         <C>                        <C>          
Kevin J. Zugibe                 Chairman of the Board,        1998        $134,800         --        40,000 shares
                                Chief Executive Officer       1997        $158,631         --        58,000 shares
                                                              1996        $145,462         --             --

Eugene J. Tonkovich             President and Chief           1998         $91,238         --       250,000 shares
                                Operating Officer             1997              --         --             --                       
                                                              1996              --         --             --

Stephen P. Mandracchia          Executive Vice President      1998        $104,800         --        25,000 shares
                                and Secretary                 1997        $120,554         --        40,000 shares                 
                                                              1996        $104,885         --             --   
                                                                          
                                                                          
Thomas Zugibe                   Executive Vice President      1998        $104,800         --        25,000 shares
                                                              1997        $120,169         --        40,000 shares
                                                              1996         $98,461         --             --

Walter A. Phillips              Vice President Marketing and  1998        $148,312         --        10,000 shares
                                Strategic Planning            1997        $213,145         --        22,000 shares
                                                              1996         $30,046         --        25,000 shares

Brian F.  Coleman               Vice President and Chief      1998        $124,900         --        25,000 shares
                                Financial Officer             1997         $79,950         --        42,000 shares
                                                              1996              --         --             --

Robert Johnson                  Vice President                1998         $84,516         --             --
                                                              1997         $81,956         --             --
                                                              1996        $133,289         --        60,000 shares
</TABLE>
- - - --------------------------
(1) The value of personal benefits furnished to the Named Executives during
1996, 1997, and 1998 did not exceed 10% of their respective annual compensation.





                                       19
<PAGE>



The Company granted options to the Named Executives during the fiscal year ended
December 31, 1998, as shown in the following table:

Summary  of Stock Options Granted to Executive Officers  

<TABLE>
<CAPTION>

                                                                  % of Total
                                                     Number of    Options
                                                     Securities   Granted to
                                                     Underlying   Employees
                                                     Options      in Fiscal
                                                     Granted      year            
                                                     ------------ -------------   Exercise or                  Expiration
         Name                    Position              Shares       Percent       Base price ($/sh)               Date
         ----                    --------              ------       -------       ----------------                ----             
<S>                                                    <C>            <C>            <C>                          <C>    
Kevin J. Zugibe         Chairman and Chief             40,000         7.7%           $3.00                      08/2003
                        Executive Officer

Eugene J. Tonkovich     President and Chief           250,000        48.0%           $4.00                      04/2003
                        Operating Officer

Thomas P. Zugibe        Executive Vice President       25,000         4.8%           $3.00                      08/2003
                  
Stephen P.              Executive Vice President       25,000         4.8%           $3.00                      08/2003
Mandracchia       
                  
Walter A. Phillips      Vice President of              10,000         1.9%           $3.06                      10/2002
                        Marketing and Strategic
                        Operations
                                       
Brian F. Coleman        Vice President and Chief       25,000         4.8%           $2.50                      08/2003   
                        Financial Officer              
                                                                           
Robert Johnson          Vice President                      0            0               0                            0    
</TABLE>                                                    











                                       20
<PAGE>



The following table sets forth information concerning the value of unexercised
stock options held by Named Executives at December 31, 1998.

Aggregated Fiscal Year End Option Values Table
<TABLE>
<CAPTION>
                                                               
                                                               
                                                               Number of Securities                               
                                                                    Underlying                    (1) Value of    
                                                               Unexercised Options            In-the-money Options
                                                              At December 31, 1998           At December 31, 1998  
                                  Shares                      --------------------           --------------------
            Name               Acquired on   Value Realized  Exercisable   Unexercisable   Exercisable  Unexercisable
            ----               -----------   --------------  -----------   -------------   -----------  -------------
                                Exercise
                                --------
<S>                                                             <C>             <C>              <C>           <C>
Kevin J. Zugibe                     --               --         125,872        38,400            0             0
Chairman and
Chief Executive Officer             

Eugene J. Tonkovich                 --               --         100,000       150,000            0             0
President and Chief
Operating Officer

Thomas P. Zugibe                    --               --         110,872        21,400            0             0
Executive Vice
President

Stephen P. Mandracchia              --               --         110,872        21,400            0             0
Executive Vice President      
and Secretary

Walter A. Phillips                  --               --         47,000         21,400            0             0
Vice  President  of Marketing
& Strategic Planning

Brian F. Coleman                    --               --         56,250         10,750            0             0
Vice President and Chief      
Financial Officer

Robert Johnson                      --               --         28,500         31,500            0             0
Vice President      
</TABLE>
- - - -----------------------
(1) Year-end values of unexercised in-the-money options represent the positive
    spread between the exercise price of such options and the year-end market 
    value of the Common Stock of $1.50.

Compensation of Directors

Non-employee directors receive an annual fee of $3,000 and receive reimbursement
for out-of-pocket expenses incurred, and an attendance fee of $500 and $250,
respectively, for attendance at meetings of the Board of Directors and Board
committee meetings. In addition, commencing in August 1998, non-employee
directors receive 5,000 nonqualified stock options per year of service under the
Company' Stock Option Plans.

To date, the Company granted to Dr. Frederick T. Zugibe, a former director of
the Company, options to purchase 75,000 shares of Common Stock at an exercise
price of $5.50 per share. Such option vested at the rate of 18,000 shares for
each of four one-year terms, commencing with the year ended October 31, 1994,
and 3,000 shares for the year ending October 31, 1998. The Company has granted
to Robert Johnson, in connection with his employment agreement with ESS, options
to purchase 60,000 shares of the Company's Common Stock at an exercise price of
$10.50 per share. Such options vest at the rate of 9,500 shares for each of four
one-year terms, commencing with the year ended April 24, 1996, and 3,000 shares
for the year ending April 24, 2002. The Company has granted to Harry C. Schell
nonqualified options to purchase 10,000 shares of Common Stock at an exercise
price of $3.00 per share. Such options vested and were fully exercisable on
August 31, 1998. The Company has also granted to each of Dominic J. Monetta,
Otto Morch and Vincent Abbatecola, nonqualified options to purchase 5,000 shares
of Common Stock at an exercise price of $3.00 per share. Such options were fully
exercisable on August 31, 1998.






                                       21
<PAGE>


Employment Agreements

The Company has entered into a five-year employment agreement with Kevin J.
Zugibe, which expires in May 1999 and is automatically renewable for successive
terms. Pursuant to the agreement, effective January 1, 1998 Mr. Zugibe is
receiving an annual base salary of $130,000 with such increases and bonuses as
the Board may determine. The Company is the beneficiary of a "key-man" insurance
policy on the life of Mr. Zugibe in the amount of $1,000,000.

The Company has also entered into one-year employment agreements with Messrs.
Thomas Zugibe and Mr. Stephen Mandracchia. Pursuant to these agreements these
officers are receiving annual base salaries of $100,000. The agreements are
automatically renewable for successive one-year terms.

The Company has entered into three-year employment contracts with Messrs.
Johnson, Phillips, and Coleman which provide for annual base salaries of
$100,000, $150,000 and $130,000, respectively, and are automatically renewable
for successive one-year terms. Messrs. Phillips's contracts also provide for
annual bonuses not to exceed $25,000, based on achievement of pre-determined
annual goals.

Stock Option Plan

1994 Stock Option Plan

The Company has adopted an Employee Stock Option Plan (the "Plan") effective
October 31, 1994 pursuant to which 725,000 shares of Common Stock are currently
reserved for issuance upon the exercise of options designated as either (i)
options intended to constitute incentive stock options ("ISOs") under the
Internal Revenue Code of 1986, as amended (the "Code"), or (ii) nonqualified
options. ISOs may be granted under the Plan to employees and officers of the
Company. Non-qualified options may be granted to consultants, directors (whether
or not they are employees), employees or officers of the Company. Stock
appreciation rights may also be issued in tandem with stock options.

The Plan is intended to qualify under Rule 16b-3 under the Securities Exchange
Act of 1934, as amended (the "Exchange Act") and is administered by a committee
of the Board of Directors, which currently consists of Messrs. Abbatecola and
Morch. The committee, within the limitations of the Plan, determines the persons
to whom options will be granted, the number of shares to be covered by each
option, whether the options granted are intended to be ISOs, the duration and
rate of exercise of each option, the exercise price per share and the manner of
exercise and the time, manner and form of payment upon exercise of an option.
Unless sooner terminated, the Plan will expire on December 31, 2004.

ISOs granted under the Plan may not be granted at a price less than the fair
market value of the Common Stock on the date of grant (or 110% of fair market
value in the case of persons holding 10% or more of the voting stock of the
Company). The aggregate fair market value of shares for which ISOs granted to
any employee are exercisable for the first time by such employee during any
calendar year (under all stock option plans of the Company) may not exceed
$100,000. Non-qualified options granted under the Plan may not be granted at a
price less than 85% of the market value of the Common Stock on the date of
grant. Options granted under the Plan will expire not more than ten years from
the date of grant (five years in the case of ISOs granted to persons holding 10%
or more of the voting stock of the Company). All options granted under the Plan
are not transferable during an optionee's lifetime but are transferable at death
by will or by the laws of descent and distribution. In general, upon termination
of employment of an optionee, all options granted to such person which are not
exercisable on the date of such termination immediately terminate, and any
options that are exercisable terminate 90 days following termination of
employment.

As of December 31, 1998, options to purchase 626,876 shares of Common Stock were
issued under the Plan and were unexercised (also see Note 11 to the Notes to the
Consolidated Financial Statements).

1997 Stock Option Plan

At the Company's 1996 Annual Meeting of the Shareholders, held July 25, 1997,
the Shareholders approved the adoption of the 1997 Stock Option Plan (the "1997
Plan") pursuant to which 1,000,000 shares of Common Stock are currently reserved
for issuance upon the exercise of options designated as either (i) options
intended to constitute incentive stock options ("ISOs") under the Internal
Revenue Code of 1986, as amended (the "Code"), or (ii) nonqualified options.
ISOs may be granted under the Plan to employees and officers of the Company.
Non-qualified options may be granted to consultants, directors (whether or not
they are employees), employees or officers of the Company. Stock appreciation
rights may also be issued in tandem with stock options.






                                       22
<PAGE>



The Plan is intended to qualify under Rule 16b-3 under the Securities Exchange
Act of 1934, as amended (the "Exchange Act") and is administered by a committee
of the Board of Directors, which currently consists of Messrs. Abbatecola and
Morch. The committee, within the limitations of the Plan, determines the persons
to whom options will be granted, the number of shares to be covered by each
option, whether the options granted are intended to be ISOs, the duration and
rate of exercise of each option, the exercise price per share and the manner of
exercise and the time, manner and form of payment upon exercise of an option.
Unless sooner terminated, the Plan will expire on June 11, 2007.

ISOs granted under the Plan may not be granted at a price less than the fair
market value of the Common Stock on the date of grant (or 110% of fair market
value in the case of persons holding 10% or more of the voting stock of the
Company). The aggregate fair market value of shares for which ISOs granted to
any employee are exercisable for the first time by such employee during any
calendar year (under all stock option plans of the Company) may not exceed
$100,000. Non-qualified options granted under the Plan may not be granted at a
price less than 85% of the market value of the Common Stock on the date of
grant. Options granted under the Plan will expire not more than ten years from
the date of grant (five years in the case of ISOs granted to persons holding 10%
or more of the voting stock of the Company). All options granted under the Plan
are not transferable during an optionee's lifetime but are transferable at death
by will or by the laws of descent and distribution. In general, upon termination
of employment of an optionee, all options granted to such person which are not
exercisable on the date of such termination immediately terminate, and any
options that are exercisable terminate 90 days following termination of
employment.

As of December 31, 1998, the Company granted options to purchase 747,766 shares
of Common Stock under the 1997 Plan. During 1997, options to purchase 40,000,
25,000 and 25,000 shares at an exercise price of $4.47 per share were granted to
Kevin J. Zugibe, Stephen P. Mandracchia and Thomas P. Zugibe, respectively. Such
options vest as follows: 18,600 shares on 11/3/98, and the balance on 11/3/99.
Additionally, during 1997, options to purchase 18,000, 15,000 and 15,000 shares
at an exercise price of $3.85 were granted to, respectively, Kevin J. Zugibe,
Stephen P. Mandracchia and Thomas P. Zugibe. The options issued to Kevin J.
Zugibe vest as follows: 1,000 shares on 11/3/99 and 17,000 on 11/3/00. The
options issued to Thomas P. Zugibe and Stephen P. Mandracchia vest on 11/3/99.
During 1997, the Company also granted options to purchase 99,100 shares to
certain officers and employees, exercisable at prices ranging from $3.50 to
$4.06 per share. During 1998, the Company granted non-qualified options to
purchase 40,000, 25,000, and 25,000 shares at an exercise price of $3.00 per
share to Kevin J. Zugibe, Stephen P. Mandracchia and Thomas P. Mandracchia,
respectively. Such options vested on August 31, 1998. In addition during 1998,
the Company also granted options to purchase 420,666 shares to certain officers,
directors and employees, exercisable at prices ranging from $2.50 to $4.375 per
share. (Also see Note 11 to the Notes to the Consolidated Financial Statements).







                                       23
<PAGE>


Item 11. Security Ownership of Certain Beneficial Owners and Management.
- - - -----------------------------------------------------------------------

The following table sets forth information as of March 3, 1999 based on
information obtained from the persons named below, with respect to the
beneficial ownership of Common Stock by (i) each person known by the Company to
be the beneficial owner of more than 5% of the Company's outstanding Common
Stock, (ii) the Named Executives, except for Spain, (iii) each director of the
Company, and (iv) all directors and executive officers of the Company as a
group:



                                                      Amount and     
                                                       Nature of      Percentage
                                                       Beneficial      of Shares
       Name and Address of Beneficial Owner (1)        Ownership (2)     Owned
       ----------------------------------------        -------------     -----
       Kevin J. Zugibe                                   363,500 (4)    7.0%
       Eugene J. Tonkovich                               123,400 (5)    2.4%
       Thomas P. Zugibe                                  350,540 (6)    6.8%
       Stephen P. Mandracchia                            345,000 (6)    6.8%
       Walter A. Phillips                                 47,000 (7)     *
       Brian F. Coleman                                   56,250 (8)    1.1%
       Robert Johnson                                     28,500 (9)     *
       Vincent Abbatecola                                  8,500(10)     *
       Otto C. Morch                                       5,600(10)     *
       Dominic J. Monetta                                 11,000(10)     *
       Harry C. Schell                                    14,000(11)     *
       Fredrick T. Zugibe                                298,406(12)    5.6%
       DuPont Chemical and Energy                                
       Operations, Inc.                                  500,000(13)    9.9%
       Fleming Funds                                   2,736,842(15)     35%(15)
       All directors and officers as a group                     
       (11 persons)                                    1,352,390  (14)   26.8%  


* = Less than 1%
- - - ----------

(1)  Unless otherwise indicated, the address of each of the persons listed above
     is the address of the Company, 275 North Middletown Road, Pearl River, New
     York 10965.

(2)  A person is deemed to be the beneficial owner of securities that can be
     acquired by such person within 60 days from the date of this report. Each
     beneficial owner's percentage ownership is determined by assuming that
     options and warrants that are held by such person (but not held by any
     other person) and which are exercisable within 60 days from the date hereof
     have been exercised. Unless otherwise noted, the Company believes that all
     persons named in the table have sole voting and investment power with
     respect to all shares of Common stock beneficially owned by them.

(3)  Includes 67,272 shares which may be purchased at $5.50 per share under an
     immediately exercisable option.

(4)  Includes (i) 18,600 shares which may be purchased at $4.47 per share and
     (ii) 40,000 shares which may be purchased at $3.00 per share under
     immediately exercisable options.

(5)  Includes 100,000 shares which may be purchased at $3.91 per share under an
     immediately exercisable option.

(6)  Includes (i) 18,600 shares which may be purchased at $4.47 per share and
     (ii) 25,000 shares which may be purchased at $3.00 per share under
     immediately exercisable options.

(7)  Represents (i) 15,000 shares which may be purchased at $5.625 per share,
     (ii) 10,000 shares which may be purchased at $4.06 per share, (iii) 12,000
     shares which may be purchased at $3.50 per share, and (iv) 10,000 shares
     which may be purchased at $3.06 per share under immediately exercisable
     options.










                                       24
<PAGE>



(8)  Represents (i) 30,000 shares which may be purchased at $4.06 per share,
     (ii) 12,000 shares which may be purchased at $3.50 per share, and (iii)
     14,250 shares which may be purchased at $2.50 per share under immediately
     exercisable options.

(9)  Represents shares which may be purchased at $10.50 per share under
     immediately exercisable options.

(10) Includes 5,000 shares which may be purchased at $3.00 per share under
     immediately exercisable options.

(11) Includes 10,000 shares which may be purchased at $3.00 per share under
     immediately exercisable options.

(12) Includes 67,272 shares which may be purchased at $5.50 per share under an
     immediately exercisable option.

(13) According to a Schedule 13D filed with the Securities and Exchange
     Commission, DuPont Chemical and Energy Operations, Inc. (`DCEO') and E.I.
     DuPont de Nemours and Company claim shared voting and dispositive power
     over the shares. DCEO's address is DuPont Building, Room 8045, 1007 Market
     Street, Wilmington, DE 19898.

(14) Includes exercisable options to purchase 604,366 shares at Common Stock
     held by the directors and officers as a group.

(15) Fleming U.S. Discovery Fund III, LP and Fleming U.S. Discovery Offshore
     Fund III, LP collectively referred to as ("Flemings Funds") are affiliates.
     The beneficial ownership assumes the conversion of Series A Preferred Stock
     to Common Stock at a conversion rate of $2.375 per share. Flemings Funds
     has provided to the CEO and Secretary of the Company a proxy to vote any
     shares held by Flemings Funds which exceed 29% of the outstanding voting 
     shares.

Kevin J. Zugibe, Thomas P. Zugibe, Frederick T. Zugibe and Stephen Mandracchia
may be deemed to be "parents" of the Company as such term is used under the
Securities Act of 1933.

Item 12. Certain Relationships and Related Transactions
- - - -------------------------------------------------------

In May 1997 certain officers of the Company made unsecured loans of $585,000 to
the Company which were repayable on demand. The notes bore interest at rates
from 8.00% to 8.88%. On August 12, 1997, the Company repaid the officer loans
together with accrued interest outstanding.

In May 1998, an officer and a former director of the Company made unsecured
loans of $300,000 to the Company which were payable on demand. Interest on the
notes bore interest at 10%. On June 30, 1998, the Company repaid the officer
loans together with accrued interest outstanding.

In February 1999, a former director of the Company made an unsecured loan of
$365,000 to the Company which is payable on demand. The note bears interest at
12% and is currently outstanding.

In the regular course of its business, the Company purchases refrigerants from
and sells refrigerants to DuPont and performs recovery, reclamation,
RefrigerantSide(TM) Services and other services (See "Description of Business -
Strategic Alliance).








                                       25
<PAGE>


Item 13. Exhibits and Reports on Form 8-K.
- - - -----------------------------------------

(a)      Exhibits
<TABLE>
<CAPTION>

<S>      <C>
3.1      Certificate of Incorporation and Amendment. (1)
3.2      Amendment to Certificate of Incorporation, dated July 20,1994. (1)
3.3      Amendment to Certificate of Incorporation, dated October 26, 1994. (1)
3.4      By-Laws. (1)
10.1     Lease Agreement between the Company and Ramapo Land Co., Inc. (1)
10.2     Consulting Agreement with J.W. Barclay & Co., Inc. (1)
10.3     Stock Option Plan of the Company. (1)
10.4     Employment Agreement with Kevin J. Zugibe. (1)
10.5     Assignment of patent rights from Kevin J. Zugibe to Registrant. (1)
10.6     Agreement dated August 12, 1994 between the Company and PAACO International, Inc. (1)
10.7     Agreement between the Company and James T. and Joan Cook for the purchase of premises 
          3200 S.E. 14th Avenue,  Ft.  Lauderdale, Florida. (1)
10.8     Agreement dated as of December 12, 1994, by and between the Company and James Spencer d/b/a CFC Reclamation. (2)
10.9     Employment agreement, dated December 12, 1994, between the Company and James Spencer. (2)
10.10    Agreement, dated July 25, 1995, between the Company and Refrigerant Reclamation Corporation of America. (3)
10.11    Employment Agreements with Thomas P. Zugibe, Stephen P. Mandracchia and Stephen J. Cole-Hatchard. (4)
10.12    Contract of Sale with ESS, Stephen Spain, Robert Johnson and the Company dated April 23, 1996(5)
10.13    Agreement dated June 14, 1996 between Environmental Support, Solutions, Inc. and E-Soft, Inc. (7)
10.14    Agreement dated July 24, 1996  between the Company and GRR Co., Inc. (7)
10.15    Agreements dated June 18, 1996 and September 30, 1996 between Cameron Capital and the Company (7)
10.16    Employment agreement, dated October 1, 1996, between the Company and Walter Phillips. (7)
10.17    Agreement  dated  February 4, 1997 between  Wilson Art, Inc. and the Company for the purchase of 
          100 Brenner  Drive,  Congers, New York. (7)
10.18    Employment agreement, dated April 16, 1997, between the Company and Brian
          Coleman (8) 10.19 Agreements dated January 29, 1997 between E.I. DuPont de Nemours, DCEO, and the Company (6)
10.20    Loan and security  agreements and warrant  agreements dated April 29, 1998 between the Company and CIT Group/Credit 
          Financing Group, Inc. (9)
10.21    Stock Purchase Agreement,  Registration  Rights Agreement and Stockholders  Agreement dated March 30, 1999
          between the Company and Flemings US Discovery Partners, LP.
23.1     Consent of BDO Seidman, LLP
27       Financial Data Schedule
         -------------------------
(1)      Incorporated by reference to the Company's Registration Statement on Form SB-2 (No. 33-80279-NY)
(2)      Incorporated by reference to the Company's Report on Form 8-K dated December 12, 1994.
(3)      Incorporated by reference to the Company's Report on Form 10-QSB for the quarter ended June 30, 1995.
(4)      Incorporated by reference to the Company's Annual Report on Form 10-KSB for the year ended December 31, 1995.
(5)      Incorporated by reference to the Company's Report on Form 8-K dated April 29, 1996.
(6)      Incorporated by reference to the Company Report in Form8-K dated January 29, 1997.
(7)      Incorporated by reference to the Company's Annual Report on Form 10-KSB for the year ended December 31, 1996.
(8)      Incorporated by reference to the Company's Annual Report on Form 10-KSB for the year ended December 31, 1997.
(9)      Incorporated by reference to the Company's Report on Form 10-QSB for the quarter ended March 31, 1998.

(b)      Reports on Form 8-K:
</TABLE>

         During the quarter ended December 31, 1998, no report on Form 8-K was
filed.




                                       26
<PAGE>


                                   SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the Registrant has duly signed this report on its behalf by the
undersigned, thereunto duly authorized on the 31st day of March, 1999.

HUDSON TECHNOLOGIES, INC.

By:      /s/ Kevin J. Zugibe 
         --------------------------------
         Kevin J. Zugibe, President


In accordance with the requirements of the Securities Exchange Act of 1934, this
report was signed by the following persons in the capacities and on the dates
stated.
<TABLE>
<CAPTION>
                Signature                        Title                                  Date
                ---------                        -----                                  ----

<S>                                <C>                                              <C> 
/s/ Kevin J. Zugibe                Chairman of the Board and                        March  31, 1999
- - - -----------------------------      Chief Executive Officer  
Kevin J. Zugibe                    (Principal Executive Officer)

/s/ Eugene J. Tonkovich            President and Chief Operating Officer            March  31, 1999
- - - -----------------------------
Eugene J. Tonkovich

/s/ Thomas P. Zugibe               Executive Vice President and Director            March  31, 1999
- - - -----------------------------
Thomas P. Zugibe

/s/ Stephen P. Mandracchia         Executive Vice President and Secretary           March  31, 1999
- - - -----------------------------
Stephen P. Mandracchia

/s/ Brian F. Coleman               Vice President and Chief                         March  31, 1999
- - - -----------------------------      Financial Officer (Principal
Brian F. Coleman                   Financial and Accounting Officer)

/s/ Harry C. Schell                Director                                         March  31, 1999
- - - -----------------------------
Harry C. Schell

/s/ Vincent Abbatecola             Director                                         March  31, 1999
- - - -----------------------------
Vincent Abbatecola

/s/ Otto C. Morch                  Director                                         March  31, 1999
- - - -----------------------------
Otto C. Morch

/s/ Dominic J. Monetta             Director                                         March  31, 1999
- - - -----------------------------
Dominic J. Monetta

</TABLE>







                                       27
<PAGE>






                            Hudson Technologies, Inc.
                              Financial Statements



                                    Contents
- - - --------------------------------------------------------------------------------


Report of Independent Certified Accountants                      29
Audited Financial Statements
o  Consolidated Balance Sheet                                    30
o  Consolidated Statements of Operations                         31
o  Consolidated Statements of  Stockholders' Equity              32
o  Consolidated Statements of  Cash Flows                        33
o  Notes to the Consolidated Financial Statements                34














                                       28
<PAGE>






Report of Independent Certified Accountants

To Stockholders and Board of Directors

Hudson Technologies, Inc.
Pearl River, New York

    We have audited the accompanying consolidated balance sheet of Hudson
Technologies, Inc. and subsidiaries as of December 31, 1998 and the related
consolidated statements of operations, stockholders' equity and cash flows for
each of the two years in the period ended December 31, 1998. These financial
statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these consolidated financial
statements based on our audits.

    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free from
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.

    In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of Hudson
Technologies, Inc. and subsidiaries as of December 31, 1998, and the results of
their operations and their cash flows for each of the two years in the period
ended December 31, 1998 in conformity with generally accepted accounting
principles.


                                                  BDO Seidman, LLP
Valhalla, New York
February 24, 1999
Except for Note 12, which
is as of March 30, 1999














                                       29
<PAGE>












                   Hudson Technologies, Inc. and subsidiaries
                           Consolidated Balance Sheet
                (Amounts in thousands, except for share amounts)
<TABLE>
<CAPTION>

                                                                            December 31,
                                                                            ------------
                                                                                 1998
                                                                                 ----
Assets (Note 8)                                                             
- - - ------
Current assets:                                                             
<S>                                                                          <C>     
     Cash and cash equivalents                                               $    776
     Trade accounts receivable - net (Note 4)                                   1,075
     Inventories (Note 5)                                                       3,284
     Prepaid expenses and other current assets                                    208
                                                                             --------
          Total current assets                                                  5,343
                                                                            
Property, plant and equipment, less accumulated depreciation (Note 7)           5,332
Other assets                                                                      184
                                                                             --------
          Total assets                                                       $ 10,859
                                                                             ========
Liabilities and Stockholders' Equity 
- - - ------------------------------------                                       
Current liabilities:                                                        
    Accounts payable and accrued expenses                                    $  4,250
    Short-term debt (Note 8)                                                    1,040
                                                                             --------
           Total current liabilities                                            5,290
Deferred income                                                                    42
Long-term debt, less current maturities (Note 8)                                1,885
                                                                             --------
           Total liabilities                                                    7,217
                                                                             --------
Commitments and contingencies (Note 10)                                     
                                                                            
Stockholders' equity (Notes 2, 9, 11 and 12):                               
    Common stock, $0.01 par value; shares authorized 20,000,000;            
       issued outstanding 5,085,820                                                51
    Additional paid-in capital                                                 22,545
    Accumulated deficit                                                       (18,954)
                                                                             --------
           Total Stockholders' equity                                           3,642
                                                                             --------
 Total liabilities and Stockholders' equity                                  $ 10,859
                                                                             ========                                              
</TABLE>
 

See accompanying Notes to the Consolidated Financial Statements.




                                       30
<PAGE>




                   Hudson Technologies, Inc. and subsidiaries
                      Consolidated Statements of Operations
         (Amounts in thousands, except for share and per share amounts)
<TABLE>
<CAPTION>

                                                              For the year ended December 31,
                                                              -------------------------------
                                                                   1998          1997
                                                               -----------    -----------

<S>                                                            <C>            <C>           
Revenues                                                       $    23,311    $    23,005   
Cost of sales                                                       17,585         18,825
Inventory write down to net realizable value (Note 5)                 --            1,443
                                                               -----------    -----------
      Gross Profit                                                   5,726          2,737
                                                               -----------    -----------
                                                             
Operating expenses:                                          
     Selling and marketing                                           1,744          1,720
     General and administrative                                      5,176          5,910
     Depreciation and amortization                                   1,195          1,525
     Write-off of intangible assets (Note 2)                          --            7,298
                                                               -----------    -----------
          Total operating expenses                                   8,115         16,453
                                                               -----------    -----------
                                                             
Operating loss                                                      (2,389)       (13,716)
                                                               -----------    -----------
                                                             
Other income (expense):                                      
     Interest expense                                                 (399)          (726)
     Other income (Note 3)                                             132            112
                                                               -----------    -----------
          Total other (expense)                                       (267)          (614)
                                                               -----------    -----------
                                                             
Loss before income taxes                                            (2,656)       (14,330)
                                                             
Income taxes (Note 6)                                                 --            1,958
                                                               -----------    -----------
                                                             
Net loss                                                       $    (2,656)   $   (16,288)
                                                               ===========    ===========
                                                             
                                                             
                                                             
                                                             
Net loss per common share - basic                              $      (.52)   $     (3.26)
                                                               ===========    ===========
Weighted average number of shares                            
  outstanding (Note 1)                                           5,068,320      5,003,343
                                                               ===========    ===========

</TABLE>
                                                             
See accompanying Notes to the Consolidated Financial Statements.
                                                      






                                       31
<PAGE>




                   Hudson Technologies, Inc. and subsidiaries
                 Consolidated Statements of Stockholders' Equity

                (Amounts in thousands, except for share amounts)
<TABLE>
<CAPTION>

                                                                                        
                                                     Common  Stock                      Additional      
                                                ------------------------    Treasury      Paid-in      Accumulated
                                                   Shares      Amount        Stock        Capital        Deficit       Total
                                                ----------    ----------   ----------    ----------    ------------    ------  

<S>                                                  <C>          <C>          <C>          <C>            <C>          <C>       
Balance at December 31, 1996                     4,370,495    $       44   $     (173)   $   18,517    $      (10)   $   18,378

Conversion of convertible
  notes                                            133,085             1           --           624            --           625
Redemption costs of convertible notes                   --            --           --          (364)           --          (364)
Issuance of common stock - net                     500,000             5           --         3,455            --         3,460
Issuance of common stock
   in connection with exercise of
   stock options                                    83,240             1           --           451            --           452
Net loss                                                --            --           --            --       (16,288)      (16,288)
                                                ----------    ----------   ----------    ----------    ----------    ----------  

Balance at December 31, 1997                     5,086,820            51         (173)       22,683       (16,298)        6,263

Retired treasury stock                             (21,000)           --          173          (173)           --            --
Issuance of common stock for services               20,000            --           --            35            --            35
Net loss                                                --            --           --            --        (2,656)       (2,656)
                                                ----------    ----------   ----------    ----------    ----------    ----------  

Balance at December 31, 1998                     5,085,820    $       51   $       --    $   22,545    $  (18,954)      $ 3,642
                                                ==========    ==========   ==========    ==========    ==========    ==========  

</TABLE>



See accompanying Notes to the Consolidated Financial Statements.













                                       32
<PAGE>



                   Hudson Technologies, Inc. and subsidiaries
                      Consolidated Statements of Cash Flows
                Increase (Decrease) in Cash and Cash Equivalents
                             (Amounts in thousands)

<TABLE>
<CAPTION>
                                                                        For the year ended December 31,
                                                                        -------------------------------
                                                                          1998                 1997
                                                                        --------             --------
<S>                                                                        <C>                  <C>      
Cash flows from operating activities:
Net loss                                                                $ (2,656)            $(16,288)
Adjustments to reconcile net loss                                                           
   to cash provided by operating activities:                                        
     Depreciation and amortization                                         1,195                1,525
     Allowance for doubtful accounts                                          80                  255
     Common stock issued for services                                         35                   --
     Deferred income taxes                                                    --                1,978
     Write-off of intangible assets                                           --                7,298
     Changes in assets and liabilities:                                                     
        Trade receivables                                                    581                  484
        Inventories                                                          471                5,307
        Income taxes receivable                                              167                  763
        Prepaid and other current assets                                     (23)                 (44)
        Other assets                                                         (85)                  34
        Accounts payable and accrued expenses                                822                  667
        Deferred income                                                      (13)                 (16)
        Reserve for restructuring                                             --                 (377)
                                                                        --------             --------
        Cash provided by operating activities                                574                1,586
                                                                        --------             --------
Cash flows from investing activities:                                                       
Additions to property, plant, and equipment                                 (591)              (1,126)
                                                                        --------             --------
          Cash used by investing activities                                 (591)              (1,126)
                                                                        --------             --------
Cash flows from financing activities:                                                       
Proceeds from issuance of common stock - net                                  --                3,912
Payment from loans to officers and stockholders                               --                 (202)
Proceeds from long-term debt                                               1,102                   --
Repayment of short-term debt                                                (480)                (453)
Redemption of convertible debt                                                --               (2,789)
Repayment of  long-term debt                                                (455)                (724)
                                                                        --------             --------
          Cash  provided (used) by financing activities                      167                 (256)
                                                                        --------             --------
    Increase in cash and cash equivalents                                    150                  204
     Cash and equivalents at beginning of period                             626                  422
                                                                        --------             --------
          Cash and equivalents at end of period                         $    776             $    626
                                                                        ========             ========
- - - --------------------------------------------------------------------                        
Supplemental disclosure of cash flow information:                                           
     Cash paid during period for interest                               $    399             $    726
     Cash paid during period for income taxes                           $     --             $     --
Supplemental schedule of non-cash investing and financing activities:                       
     Conversion of debt to common stock                                 $     --             $    625
 
</TABLE>

See accompanying Notes to the Consolidated Financial Statements.





                                       33
<PAGE>

Notes to the Consolidated Financial Statements
Note 1-  Summary of Significant Accounting Policies

Business
Hudson Technologies, Inc., incorporated under the laws of New York on January
11, 1991, together with its subsidiaries (collectively, "Hudson" or the
"Company"), primarily sells refrigerants and provides refrigerant management
services, consisting primarily of recovery and reclamation of the refrigerants
used in commercial air conditioning and refrigeration systems, as well as
RefrigerantSide(TM) services, through which the Company performs decontamination
to remove moisture, oils and other contaminants in such systems. The Company
operates through its wholly owned subsidiaries Hudson Technologies Company and
Environmental Support Solutions, Inc. ("ESS").

Consolidation
The consolidated financial statements represent all companies of which Hudson
directly or indirectly has majority ownership or otherwise controls. Significant
intercompany accounts and transactions have been eliminated. The Company's
consolidated financial statements include the accounts of wholly-owned
subsidiaries Hudson Holdings, Inc., Hudson Technologies Company and ESS.

Fair value of financial instruments
The carrying values of financial instruments including trade accounts
receivable, and accounts payable approximate fair value at December 31, 1998,
because of the relatively short maturity of these instruments. The carrying
value of short-and long-term debt approximates fair value, based upon quoted
market rates of similar debt issues, as of December 31, 1998.

Credit risk
Financial instruments, which potentially subject the Company to concentrations
of credit risk, consist principally of temporary cash investments and trade
accounts receivable. The Company maintains its temporary cash investments in
highly-rated financial institutions. The Company's trade accounts receivables
are due from companies throughout the U.S. The Company reviews each customer's
credit history before extending credit.

    The Company establishes an allowance for doubtful accounts based on factors
associated with the credit risk of specific accounts, historical trends, and
other information.

    During the year ended December 31, 1998 one customer, an affiliate,
accounted for 28% and another customer accounted for 14%. During the year ended
December 31, 1997 one customer accounted for 11% of revenues.



<PAGE>


Cash and cash equivalents
Temporary investments with original maturities of ninety days or less are
included in cash and cash equivalents.

Inventories
Inventories, consisting primarily of reclaimed refrigerant products available
for sale, are stated at the lower of cost, on a first-in first-out basis, or
market.

Property, plant, and equipment
Property, plant, and equipment are stated at cost; including internally
manufactured equipment. Provision for depreciation is recorded (for financial
reporting purposes) using the straight-line method over the useful lives of the
respective assets. Leasehold improvements are amortized on a straight-line basis
over the shorter of economic life or terms of the respective leases.

    Due to the specialized nature of the Company's business, it is possible that
the Company's estimates of equipment useful life periods may change in the
future.

Revenues and cost of sales
Revenues are recorded upon completion of service or product shipment or passage
of title to customers in accordance with contractual terms. Cost of sales is
recorded based on the cost of products shipped or services performed and related
direct operating costs of the Company's reclamation sites.

Income taxes
Hudson utilizes the assets and liability method for recording deferred income
taxes, which provides for the establishment of deferred tax asset or liability
accounts based on the difference between tax and financial reporting bases of
certain assets and liabilities.

Loss per common shares
Loss per common share (Basic) is computed on the weighted average number of
shares outstanding. If dilutive, common equivalent shares (common shares
assuming exercise of options and warrants) utilizing the treasury stock method
are considered in the presentation of dilutive earnings per share.

Estimates and Risks
The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect reported amounts of certain assets and liabilities, the disclosure of
contingent assets and liabilities, and the results of operations during the
reporting period. Actual results could differ from these estimates.

     The Company participates in an industry that is highly regulated, changes
in which could affect operating results. Currently the Company purchases 


                                       34
<PAGE>



virgin and reclaimable refrigerants from domestic suppliers and its customers.
The Company has increased its inventory turnover rate and has less inventory
than historically maintained. The Company's inability to obtain refrigerants on
commercially reasonable terms or a decline in demand for refrigerants could
cause delays in refrigerant processing, possible loss of revenues, and could
have a material adverse affect on operating results.

Impairment of long-lived assets and long-lived assets to be disposed of
The Company reviews for impairment long-lived assets whenever events or changes
in circumstances indicate that the carrying amount of an asset may not be
recoverable. Recoverability of assets to be held and used is measured by a
comparison of the carrying amount of the assets to the future net cash flows
expected to be generated by the asset. If such assets are considered to be
impaired, the impairment to be recognized is measured by the amount by which the
carrying amount of the assets exceeds the fair value of the assets. Assets to be
disposed of are reported at the lower of the carrying amount or fair value less
the cost to sell. In 1997, the Company recognized an impairment loss for its
intangible assets (See Note 2).

Recent accounting pronouncements
In June 1998, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 133, "Accounting for Derivative Instruments
and Hedging Activities," which requires entities to recognize all derivatives as
either assets or liabilities in the statement of financial position and measure
those instruments at fair value. SFAS No. 133 is effective for all fiscal years
beginning after June 15, 1999. The Company is currently reviewing SFAS No. 133
and has of yet been unable to fully evaluate the impact, if any, it may have on
future operating results or financial statement disclosures.

Note 2 - Acquisitions and Impairment Charge
On August 15, 1995, the Company acquired Refrigerant Reclamation Corporation of
America ("RRCA"). The purchase price was approximately $6,068,000, which
consisted of cash of $1,250,000, a note of $750,000 paid during December 1995,
and 174,964 shares of the Company's common stock. The acquisition was accounted
for as a purchase from the date of acquisition with the assets acquired and
liabilities assumed recorded at fair values, resulting in an excess of cost over
assets acquired of approximately $4,000,000. Results of RRCA's operations have
been included in the Company's consolidated financial statements from the date
of acquisition.

    On April 23, 1996, the Company acquired all the outstanding capital stock of
ESS, a Mesa, Arizona developer and provider of environmental software,





<PAGE>

training, and management services. The capital stock of ESS was purchased for
$2,375,000, which consisted of cash of $700,000 and notes of $1,675,000 paid
during October 1996. The acquisition was accounted for as a purchase from the
date of acquisition with the assets acquired and liabilities assumed recorded at
fair values, resulting in an excess of cost over assets acquired of
approximately $800,000. Results of ESS's operations have been included in the
Company's consolidated financial statements from the date of acquisition.

    On June 14, 1996, ESS acquired all the net assets, subject to liabilities,
of E-Soft, Inc. ("E-Soft"), a Georgia-based developer and marketer of software
programs related to hazardous material management, in exchange for a cash
payment of $50,000 and 41,560 unregistered shares of the Company's stock. E-Soft
acquired assets and liabilities were recorded at fair values, resulting in an
excess of cost over assets acquired of approximately $500,000. Subsequent to the
acquisition, all E-Soft assets and activities were relocated to ESS headquarters
in Arizona.

    In March 1999 the Company sold 75% of its stock ownership in ESS to one of 
it's founders. See Note 12.


    On July 24, 1996, the Company acquired all the outstanding common stock of
GRR Co., Inc. d.b.a. Golden Refrigerants ("Golden"), a refrigerant reclamation
and recovery company located in Punta Gorda, Florida, in exchange for 20,000
unregistered shares of the Company's stock with a valuation of $100,000 at the
transaction date. Concurrent with the acquisition, the Company purchased, for
nominal consideration, all the net assets, subject to liabilities, of Golden,
and dissolved GRR Co., Inc.

    The Company's intangible assets were primarily related to the acquisitions
associated with refrigerant sales and its software products. The Company
considers continued operating losses or significant long term business changes
to be its primary indicators of potential impairment. An impairment is
recognized when the future undiscounted cash flows are estimated to be
insufficient to recover the related carrying value of the asset. As a result,
during the fourth quarter of 1997, the Company recognized a non cash, non
recurring charge to operations for the write-off of recorded goodwill and
intangible assets primarily associated with its 1995 and 1996 acquisitions in
the amount of $7,298,000.







                                       35
<PAGE>



Note 3 - Other income
For the year ended December 31, 1998, and 1997, other income of $132,000 and
$112,000, respectively, consisted mainly of sublease rental income from the
Company's Ft. Lauderdale facility.

Note 4- Trade receivables - net
Trade accounts receivable include reserves for doubtful accounts of $240,000 at
December 31, 1998.

Note 5 - Inventories 
Inventories consisted of the following:

December 31, (in thousands)                       1998
                                                  ----
Refrigerant and  cylinders                      $2,576
Packaged refrigerants                              675
Other                                               33
                                                ------
Total                                           $3,284
                                                ======


During January 1998, the Company entered into several agreements, with E.I.
DuPont de Nemours and Company ("DuPont") to market DuPont's SUVA(TM)
refrigerants. Under the agreement, 100% of virgin refrigerants provided to
specified market segment customers must be purchased from DuPont (see Note 9 to
the Notes to Consolidated Financial Statements). 

During 1997, the Company recognized a reduction of inventory carrying values to
net realizable value in the aggregate of $1,443,000.

Note 6 - Income taxes
Elements of income tax expense (benefit) for the years 1998 and 1997 are as
follows:

Year ended December 31,
 (in thousands)                       1998        1997
                                      ----        ----
Provision (benefit) for
income tax
- - - -----------------------
Current payable:
 - Federal                            $ --     $  (20)
 - State                                --         --
                                   -------     ------
Subtotal                                --        (20)
                                   -------     ------
Deferred:
 - Federal                              --      1,778
                                   -------     ------
 - State                                --        200
                                   -------     ------
Subtotal                                --      1,978
                                   -------     ------
Total                               $ --       $1,958
                                   =======     ======

Reconciliation of the Company's actual tax rate to the U.S. Federal statutory
rate is as follows:

Year ended December 31,
 (in percents)                         1998      1997
                                       ----      ----
Income tax rates
- - - ----------------
 - Statutory U.S. Federal rate        (34%)     (34%)
 - States, net U.S. benefits           (4%)      (4%)
 - Permanent differences               - %       23%
 - Valuation allowance                 38%       29%
                                    ------      ---
Total                                  - %       14%
                                    ======      ===



<PAGE>

RRCA, acquired during 1995 as a subsidiary of the Company, has available net
operating loss carryforwards (`NOL') expiring through 2010 of approximately
$5,000,000 subject to annual limitations of approximately $400,000. During 1996,
the Company recorded a deferred tax asset of approximately $1,800,000 and
reduced goodwill an equivalent amount.

    During the fourth quarter of 1997, the Company recognized a non cash, non
recurring valuation allowance primarily associated with the deferred tax asset
acquired in the RRCA acquisition.

    As of December 31, 1998, the Company has net operating loss carryforwards of
approximately $14,000,000 for which a 100% valuation allowance has been
recognized. Approximately $5,000,000 of the net operating loss carryforwards is
subject to annual limitations of $400,000.

Elements of deferred income tax assets (liabilities) are as follows:

  December 31,
 (in thousands)                                        1998
                                                       ----
Deferred tax assets (liabilities)
- - - --------------------------------
 - Depreciation & amortization                       $ (35)
 - Reserves for doubtful accounts                   
                                                        91
 - NOL                                               5,300
 - NOL valuation allowance                          (5,300)
 - Other                                               (56)
                                                   --------
Total                                              $    --
                                                   ========

Note 7 - Property, plant, and equipment Elements of property, plant, and
equipment are as follows:

December 31,
 (in thousands)                                  1998
Property, plant, & equipment
- - - ----------------------------
 - Land                                          $335
 - Buildings & improvements                       754
 - Equipment                                    5,772
 - Equipment under capital lease                1,211
 - Furniture & fixtures                           188
 - Leasehold improvements                         764
 - Equipment under construction                    58
                                               ------
subtotal                                        9,082
Accumulated depreciation &
amortization                                   (3,750)
                                               ------
 Total                                         $5,332
                                               ======

The Company's land and building and improvements, with a net book value of
approximately $982,000, are currently being leased to a third party (See Note
10).






                                       36
<PAGE>



Note 8 - Short-term and long-term debt Elements of short-term and long-term debt
are as follows:

Year ended December 31,                           1998
 (in thousands)                                   ----

Short-term & long-term debt
- - - ---------------------------
Short-term debt
 - Bank credit line                              $ 503
 - Long-term debt: current                         537
                                               -------
Short-term debt                                $ 1,040
                                               =======
Long-term debt
 - Bank credit line                            $ 1,118
 - Mortgage payable                                675
 - Capital lease obligations                       517
 - RRCA priority claims                            112
 - Less: current maturities                      (537)
                                                ------
Long-term debt                                  $1,885
                                                ------
Total                                           $2,925
                                                ======
Bank credit line
On April 28, 1998, the Company entered into a credit facility with CIT
Group/Credit Finance Group, Inc. ("CIT") which makes available borrowings to the
Company of up to $5,000,000 and increases to $6,500,000 in 1999. The facility
requires minimum borrowings of $1,250,000. The facility provides for a revolving
line of credit and a six-year term loan and expires in April 2001. Advances
under the revolving line of credit are limited to (i) 80% of eligible trade
accounts receivable and (ii) 50% of eligible inventory (which inventory amount
shall not exceed 200% of eligible trade accounts receivable or $3,250,000). As
of December 31, 1998, the Company has availability under its revolving line of
credit of approximately $399,000. Advances, available to the Company, under the
term loan (currently approximately $857,000) are based on existing fixed asset
valuations and future advances under the term loan up to an additional
$1,000,000 are based on future capital expenditures. As of December 31, 1998,
the Company had $1,621,000 outstanding under this facility. The facility bears
interest at the prime rate plus 1.5%, 10% at December 31, 1998, and
substantially all of the Company's assets are pledged as collateral for
obligations to CIT. 

Mortgage payable
During 1996, the Company mortgaged its property and building located in Ft.
Lauderdale with Turnberry Savings Bank, NA. At December 31, 1998, the mortgage
bears interest at a rate of 9.25% and repayable over 20 years through January
2017.

RRCA Priority Claims
In connection with its bankruptcy reorganization in June 1994, prior to its
acquisition by Hudson, RRCA has 






<PAGE>

unsecured obligations as modified by a settlement during April 1996, payable in 
periodic payments to bankruptcy creditors through July 2000.

Scheduled maturities of the Company's debts and capital lease obligations are as
follows:

(in thousands)
Debts
Years ended December 31,                          Amount
- - - ------------------------                          ------
 - 1999                                           $1,040
 - 2000                                              348
 - 2001                                              470
 - 2002                                              213
 - 2003                                              205
 -  Thereafter                                       649
                                                     ---
Total                                             $2,925
                                                  ======

The Company rents certain equipment with a net book value of about $558,000 for
leases which have been classified as capital leases. Scheduled future minimum
lease payments under capital leases net of interest are as follows:

(in thousands)
Scheduled Capital lease payments
Years ended December 31,                          Amount
- - - ------------------------                          ------
 - 1999                                             $256
 - 2000                                              167
 - 2001                                               33
 - 2002                                               35
 - 2003                                     
                                                      26
                                                    ----
Total                                               $517
                                                    ====

Average  short-term debt for the year ended December 31, 1998 totaled  $444,000 
with a weighted  average interest rate of approximately 10.2%.

Note 9 - Stockholders' equity
On March 24, 1995, the Company sold 153,846 redeemable common stock warrants at
$3.25 per warrant realizing proceeds of $500,000. The warrants, exercisable at
$6.25 per share until October 31, 1999, are redeemable by the Company as set
forth in the agreement. As of December 31, 1998, no warrants were exercised.

    On May 10, 1996, the Board of Directors authorized the Company to acquire,
from publicly traded markets, a maximum of 25,000 issued and outstanding shares
of its own Common Stock. In 1996, the Company had repurchased 21,000 shares at
an average price of $8.25 per share. No shares were purchased in 1998 and 1997.

    On January 29, 1997, the Company entered into a Stock Purchase Agreement
with DuPont and DuPont Chemical and Energy Operations, Inc. ("DCEO") pursuant to
which the Company issued to DCEO 500,000 shares of Common Stock in consideration
of








                                       37
<PAGE>

$3,500,000 in cash. Simultaneous with the execution of the Stock Purchase
Agreement, the parties entered into a Standstill Agreement, Shareholders'
Agreement and Registration Agreement.

    The Standstill Agreement provides, subject to certain exceptions, that
neither DuPont nor any corporation or entity controlled by DuPont will, directly
or indirectly, acquire any shares of any class of capital stock of the Company
if the effect of such acquisition would be to increase DuPont's aggregate voting
power to greater than 20% of the total combined voting power relating to any
election of directors. The Standstill Agreement also provides that the Company
will cause two persons designated by DCEO and DuPont to be elected to the
Company's Board of Directors.

    The Shareholders' Agreement provides that, subject to certain exceptions,
DuPont shall have a right of first refusal to purchase any shares of Common
Stock intended to be sold by the Company's principal shareholders.

     Pursuant to the Registration Agreement, the Company granted to DuPont
certain demand and "piggy-back" registration rights. During January 1997,
certain then outstanding convertible debentures were converted into 133,085
shares of common stock.

     During 1997, certain officers and other stock option holders exercised
options to purchase an aggregate of 83,240 shares of common stock. The Company
received proceeds of approximately $452,000.

     During 1998, the Company issued, to a vendor, 20,000 shares of common stock
for services rendered during the year. The value of the services was recognized
based on the fair value of the stock at the time of issuance.

     During 1998, the Company retired the 21,000 shares of stock held in
treasury.

     On April 28, 1998, in connection with the loan agreements with CIT, the
Company issued to CIT warrants to purchase 30,000 shares of the Company's common
stock at an exercise price equal to 110% of the then fair market value of the
stock, which on the date of issuance was $4.33 per share and expires April 29,
2001. The value of the warrants were not deemed to be material. In addition,
among other things, the agreements restrict the Company's ability to declare or
pay any dividends on its capital stock. The Company has obtained a waiver from
CIT to permit the payment of dividends on its Series A Preferred Stock. (See 
Note 12).

Note 10 - Commitments and contingencies

Rents, operating leases and contingent income
Hudson utilizes leased facilities and operates equipment under non-cancelable
operating leases through the year 2004. In addition, the Company subleases a
portion of its owned Ft. Lauderdale facility to a third party.






<PAGE>


Properties
The Company headquarters is located in approximately 5,400 square feet of leased
commercial space at Pearl River, New York. The building is leased from an
unaffiliated third party pursuant to a three year agreement at an annual rental
of approximately $87,500 through January 2002.

The Company's Hillburn facility is located in approximately 21,000 square feet
of leased industrial space. The building is leased from an unaffiliated third
party pursuant to a five-year agreement at an annual rental of about $86,000
through May 2004.

In March 1995, the Company purchased, for $950,000, a facility in Ft.
Lauderdale, Florida, consisting of a 32,000 square foot building on
approximately 1.7 acres with rail and port access. The property was mortgaged
during 1996. Annual real estate taxes are approximately $24,000. The Company has
entered into a three-year agreement, pursuant to which it leases 15,000 square
feet of its Florida facility to an unaffiliated third party at a monthly rental
of $12,500. During November 1998, the Company ceased principally all of its
operations in this facility.

The Company's Baton Rouge, Louisiana facility is located in a 20,000 square foot
building which is leased from an unaffiliated third party at an annual rental of
approximately $54,000 pursuant to an agreement expiring in April 2000.

The Company's Rantoul, Illinois facility is located in a 23,000 square foot
building which is leased from an unaffiliated third party at an annual rental of
approximately $78,000 pursuant to an agreement expiring in September 2002.

The Company's Charlotte, North Carolina facility is located in 12,000 square
foot building which is leased from an unaffiliated third party pursuant to an
agreement which expires in April 2000. Annual rent is approximately $42,000.

The Company's Punta Gorda, Florida separation facility is located in a 15,000
square foot building leased from an unaffiliated third party at an annual rent
of $60,000 pursuant to an agreement expiring in April 2001.

The Company's Mesa, Arizona office facility of about 4,000 square feet is leased
from an unaffiliated third party at an annual rental of approximately $49,000;
pursuant to an agreement expiring in February 2000.

In 1999, the Company opened a depot facility in Houston, Texas, which is located
in 1,555 square feet located in a larger building and is leased from an
unaffiliated third party at an annual rent of $6,700 pursuant to an agreement
which expires in March 2000.









                                       38
<PAGE>



During January 1997, the Company entered into a contract to purchase a 29,000
square foot facility on 5.15 acres in Congers, New York for about $1.4 million;
subject to approvals and ability to obtain financing. In October 1998, the
Company cancelled the contract pursuant to its contingency provision and remains
in occupancy under a monthly lease until terminated no later than May 1, 1999.
The Company is leasing the facility for approximately $14,000 per month during
the interim period.

The Company rents properties and various equipment under operating leases. Rent
expense, net of sublease rental income, for the year ended 1998 and 1997 totaled
approximately $928,000 and $888,000, respectively.

Future commitments under operating leases, are summarized as follows:

(in thousands)
Rent expense
Years ended December 31,                          Amount
- - - ------------------------                          ------
 - 1999                                           $ 1051
 - 2000                                              694
 - 2001                                              604
 - 2002                                              168
 - 2003                                              103
 - Thereafter                                         42
                                                 -------
Total                                            $ 2,662
                                                 =======

Legal Proceedings

During June 1995, United Water of New York Inc. ("United") alleged that it
discovered that two of its wells within close proximity to the Company's
facility showed elevated levels of refrigerant contamination, specifically
trichlorofluoromethane (R-11). During June 1996, United notified the Company
that it was seeking indemnification by the Company for costs incurred to date as
well as costs expected to be incurred in connection with United taking remedial
action. During July 1996, United threatened to institute legal action in the
event that the Company declined to settle this matter.

During August 1996, the Company received a letter from the New York State
Department of Environmental Conservation ("DEC") which stated that, in the
opinion of DEC, the Company was the cause of the contamination of United's
wells. The DEC letter stated that it is not aware of the extent of the
contamination or how the refrigerants entered the groundwater.

During December 1996, the Company and United entered into an interim settlement
agreement which provided for (a) reimbursement ($84,000) of United's operating
costs associated with certain wells through 



<PAGE>


August 1996, (b) reimbursement, subject to a dollar cap of $12,650 per month, of
United's monthly operating costs for certain wells from September 1996 through
April 1997, and (c) continued monitoring of R-11 refrigerant groundwater levels.
Under the agreement, United agreed not to commence legal action against the
Company prior to May 1, 1997. Neither party waived their rights as a result of
the interim agreement.

During August and September 1997, various proposals for possible further
remediation were discussed with the DEC and United in light of the reduction of
levels of R-11 in United's wells. Since August 1997 the levels of R-11 have
remained nearly non-detectable and well under minimum contaminant levels
established by the State of New York. In January 1998, the Company agreed to
install a remediation system at the Company's facility that was previously
proposed by Company to remove any remaining R-11 levels in the groundwater under
and around the Company's facility. In August 1998 the DEC accepted the Company's
proposal and requested that the Company proceed with the installation of the
system. The Company is in the process of installing the system and is
negotiating with the DEC for a Consent Order to permit the operation of the
system. The cost of this remediation system is estimated to be in the range of
approximately $80,000 to $100,000.

During December 1997, United Water alleged that it discovered levels of
Dichlorodifluoromethane (R-12) in two of its wells within close proximity to the
Company's facility, and has alleged that the Company is the source. Sampling by
the Company of various monitoring wells installed around the Company's
facilities have been taken on a monthly basis since August 1996 and have failed
to detect any levels of R-12 in the groundwater in and around the Company's
facility.

In June 1998, United Water commenced an action against the Company in the
Supreme Court of the State of New York, Rockland County, seeking damages in the
amount of $1.2 Million allegedly sustained as a result of the foregoing. In
December 1998, United Water served an amended complaint asserting a claim
pursuant to the Resource Conservation and Recovery Act, 42 U.S.C. ss. 6901, et.
seq. ("RCRA"). The Company maintains that the allegations in the complaint are
without merit and that the damages claimed by United Water are significantly
overstated and bear little relation to any damages that United Water allegedly
sustained. A motion has been filed on behalf of the Company to dismiss the RCRA
cause of action, which motion is now pending. The Company intends to vigorously
defend this action. A motion has been filed on behalf of the Company to dismiss
the RCRA cause of action, which motion is now pending.








                                       39
<PAGE>


There can be no assurance that this action, or any settlement thereof, will be
resolved in a manner favorable to the Company, or that the ultimate outcome of
any legal action or settlement will not have a material adverse effect on the
Company's financial condition and results of operations.

During March and April, 1998, six (6) complaints, each alleging violations of
Sections 10(b) and 20(a) of the Securities Exchange At of 1934, were filed by a
total of eight shareholders, on behalf of themselves and all others similarly
situated, against the Company and certain of its officers and directors in the
United States District Court for the Southern District of New York. Each of the
complaints alleges that the defendants, among other things, misrepresented
material information about the Company's financial results and prospects, and
its customer relationships. The complaints in five of these actions seek relief
on behalf of persons purchasing common stock between August 8, 1995 and August
15, 1997, and the complaint in the sixth action seeks relief on behalf of
persons purchasing common stock between March 31, 1997 and August 15, 1997. The
Company maintains that the allegations of wrongdoing alleged in the complaints
are without merit. The Company intends to vigorously defend the claims brought
against it and has retained the law firm of Davis, Polk and Wardwell for that
defense. A motion has been made on behalf of the Company to dismiss the claims
asserted, which motion is now pending.

There can be no assurance that any of these actions, or the settlement thereof,
will be resolved in a manner favorable to the Company, or that the ultimate
outcome of any legal action or settlement will not have a material adverse
effect on the Company's financial condition and results of operations.

In May 1998, an action was commenced in the Supreme Court of the State of New
York, Rockland County, by BNY Financial Corporation ("BNY") against the Company
seeking damages in the amount of $49,051 for legal fees and expenses allegedly
incurred in connection with certain financial dealings and discussions engaged
in between the Company and BNY. The Company denies any liability for such
expenses and intends to defend the action vigorously, and has also asserted
counterclaims seeking the return of certain fees paid by the Company to BNY in
connection with those financial dealings.

There can be no assurance that this action, or any settlement thereof, will be
resolved in a manner favorable to the Company.

In February 1999, an arbitration proceeding was commenced against Environmental
Support Solutions,






<PAGE>

Inc. ("ESS") by Mach 2 Systems, Inc. seeking recovery of approximately $20,000
and other ancillary relief, for consulting and programming services allegedly
provided to ESS. ESS denies any liability for all such amounts and intends to
defend the action vigorously.

There can be no assurance that this action, or any settlement thereof, will be
resolved in a manner favorable to ESS.

The Company and its subsidiaries are subject to various other claims and/or
lawsuits from both private and governmental parties arising from the ordinary
course of business; none of which are material.

Employment agreements
The Company has entered into six multi-year employment agreements expiring by
2000 with officers of the Company, which provide for aggregate annual base
salaries totaling $710,000.

Note 11 - Stock Option Plan

Effective October 31, 1994, the Company adopted an Employee Stock Option Plan
("Plan") pursuant to which 725,000 shares of common stock are reserved for
issuance upon the exercise of options designated as either (i) options intended
to constitute incentive stock options ("ISOs") under the Internal Revenue Code
of 1986, as amended, or (ii) nonqualified options. ISOs may be granted under the
Plan to employees and officers of the Company. Non-qualified options may be
granted to consultants, directors (whether or not they are employees), employees
or officers of the Company. Stock appreciation rights may also be issued in
tandem with stock options. Unless sooner terminated, the Plan will expire on 
December 31, 2004.

    ISOs granted under the Plan may not be granted at a price less than the fair
market value of the Common Stock on the date of grant (or 110% of fair market
value in the case of persons holding 10% or more of the voting stock of the
Company). Non-qualified options granted under the Plan may not be granted at a
price less than 85% of the market value of the Common Stock on the date of
grant. Options granted under the Plan expire not more than ten years from the
date of grant (five years in the case of ISOs granted to persons holding 10% or
more of the voting stock of the Company).

    Effective July 25, 1997, the Company adopted its 1997 Employee Stock Option
Plan (" 1997 Plan") pursuant to which 1,000,000 shares of common stock are
reserved for issuance upon the exercise of options designated as either (i)
options intended to constitute incentive stock options ("ISOs") under the
Internal Revenue Code of 1986, as amended, or (ii) nonqualified options. ISOs
may be granted under the 1997 Plan to employees and officers of the Company.
Non-qualified 






                                       40
<PAGE>
options may be granted to consultants, directors (whether or not they are
employees), employees or officers of the Company. Stock appreciation rights may
also be issued in tandem with stock options. Unless sooner terminated, the 1997
Plan will expire on June 11, 2007. 

    ISOs granted under the 1997 Plan may not be granted at a price less than the
fair market value of the Common Stock on the date of grant (or 110% of fair
market value in the case of persons holding 10% or more of the voting stock of
the Company). Non-qualified options granted under the 1997 Plan may not be
granted at a price less than 85% of the market value of the Common Stock on the
date of grant. Options granted under the 1997 Plan expire not more than ten
years from the date of grant (five years in the case of ISOs granted to persons
holding 10% or more of the voting stock of the Company).

    All stock options have been granted to employees and non-employees at
exercise prices equal to or in excess of the market value on the date of the
grant.

    The Company applies APB Opinion 25, `Accounting for Stock Issued to
Employees', and related Interpretations in accounting for its stock option plan
by recording as compensation expense the excess of the fair market value over
the exercise price per share as of the date of grant. Under APB Opinion 25,
because the exercise price of the Company's employee stock options equals the
market price of the underlying stock on the date of the grant, no compensation
cost is recognized.

    SFAS No.123 requires the Company to provide pro forma information regarding
net loss and net loss per share as if compensation cost for the Company's stock
option plan had been determined in accordance with the fair value based method
prescribed in SFAS No. 123. The Company estimates the fair value of each stock
option at the grant date by using the Black-Scholes option-pricing model with
the following weighted-average assumptions used for grants since 1995.

Years ended December 31,
Assumptions                             1998        1997
- - - -----------                             ----        ----
     Dividend Yield                    %   0       %   0
     Risk free interest rate             5.5           6
     Expected volatility                46.1        46.5
     Expected lives                        5           5




<PAGE>

Under the accounting provisions of FASB Statement 123, the Company's net loss
and net loss per share would have been adjusted to the pro forma amounts
indicated below:


(In thousands, except per share amounts)
Years ended December 31,
Pro forma results                            1998         1997
- - - -----------------                            ----         ----
Net loss:
   As reported                           $(2,656)    $(16,288)
   Pro forma                             $(3,438)    $(16,977)
Loss per common share-basic
   As reported                             $(.52)      $(3.26)
   Pro forma                               $(.68)      $(3.39)


A summary of the status of the  Company's  stock option plan as of December 31,
1998 and 1997 and changes for the years ending on those dates is presented
below:

                                                 Weighted
Stock Option Plan Grants              Shares       Average
- - - ------------------------                          Exercise
                                                     Price
Outstanding at December 31, 1996       718,600      $ 6.94
- - - --------------------------------                          
o        Granted                       261,666      $ 4.21
o        Exercised                    (83,240)      $ 5.43
o        Forfeited                    (16,500)      $ 7.13
                                      --------
Outstanding at December 31, 1997       880,526      $ 6.03
- - - --------------------------------                          
o        Granted                       520,666      $ 3.50
o        Forfeited                    (26,550)      $ 5.74
                                      --------
Outstanding at December 31, 1998     1,374,642      $ 5.08
- - - --------------------------------     =========      ======


Data summarizing year-end options exercisable and weighted average fair-value of
options granted during the years ended December 31, 1998, and 1997 is shown
below:

Options Exercisable
- - - -------------------
                           Year  ended        Year  ended
                          December 31,       December 31,
                                  1998               1997
Options exercisable at
year-end                     1,052,525            619,060
                             ---------            -------

Weighted average
exercise price                   $5.15              $5.91
                                 -----              -----

Weighted average fair
value of options
granted during the
year                            $ 1.21             $ 1.89
                                ------             ------


                    Options Exercisable at December 31, 1998
                    -----------------------------------------

                                                Weighted
                           Number               -average
Range of Prices            Outstanding           Exercise
- - - ---------------            -----------            Price
                                                  -----                        
$2 to $4                       382,749           $ 3.29
$4 to $10                      584,776           $ 5.28
$10 to $16                      85,000           $11.05
                          ------------
$2 to $16                    1,052,525           $ 5.15
                          ============
                                               






                                       41
<PAGE>



The following table summarizes information about stock options outstanding at
December 31, 1998:


                    Options Outstanding At December 31, 1998
                    ----------------------------------------
                                     Weighted-
                                       average     Weighted               
                                     Remaining     -average
                        Number      Contractual    Exercise
Range of           Outstanding             Life       Price
Prices             -----------      -----------   ---------
$2 to $4               605,866        4.0 years       $3.50
$4 to $10              620,776        1.0 years       $5.23
$10 to $16             148,000        2.0 years      $10.82
                       -------
$2 to $16            1,374,642        2.0 years       $5.08
                     =========

During the initial phase-in period of SFAS 123, the effects on the pro-forma
results are not likely to be representative of the effects on pro-forma results
in future years since options vest over several years and additional awards
could be made each year.

Note 12 - Subsequent Events

On March 16, 1999, the Shareholders of the Company approved an amendment to the
Certificate of Incorporation to authorize the issuance of 5,000,000 shares of
Preferred Stock. This authorization allows the Board of Directors to, among
other things, set the number of shares, the dividend rate and the voting rights
on any issuance of Preferred Stock.

On March 30, 1999, the Company completed the sale of 65,000 shares of its Series
A Preferred Stock, with a liquidation value of $100 per share, to Fleming U.S.
Discovery Fund III, LP and Fleming U.S. Discovery Offshore Fund III, LP. The
gross proceeds from the sale of the Preferred Stock is $6,500,000. The Preferred
Stock has voting rights, with Common Stock, on an as if converted basis up to
29% of the then outstanding voting shares. The holders of the Preferred Stock
will provide the CEO and Secretary of the Company a proxy to vote any
additional shares above the 29% limitation. The Preferred Stock carries a
dividend rate of 7%, which will increase to 16% on the fifth anniversary date,
and converts to Common Stock at a rate of $2.375 per share, which is 27% above
the closing market price of Common Stock as of March 29, 1999. The conversion
rate may be subject to certain antidilution provisions, as defined in the
agreement. The Company has engaged an advisor to facilitate the Company's
efforts in connection with this transaction. The success fee for these services
was $455,000 and warrants to purchase 136,842 shares of the Company's Common
Stock at an exercise price per share of $2.73. The Company will use the net
proceeds from the issuance of Preferred Stock to expand its RefrigerantSide(TM)
Services and for working capital purposes.
<PAGE>

The Company will pay dividends on the Preferred Stock, semi annually, either in
cash or additional shares, at the Company's option, during the first two years
after which the dividends will be paid in cash. The Company may redeem the
Preferred Stock on March 31, 2004 either in cash or shares of Common Stock
valued at 90% of the average trading price of the Common Stock for the 30 days
preceding March 31, 2004. In addition, after March 24, 2001, the Company may
call the Preferred Stock if the market price of the common stock is equal or
greater than 250% of the conversion price and the Common Stock has traded with
an average daily volume in excess of 20,000 shares for a period of thirty
consecutive days.

The Company has provided certain registration, preemptive and tag along rights
to the holders of the Preferred Stock. The holders of the Preferred Stock,
voting as a separate class, have the right to elect up to two members to the
Company's Board of Directors or at their option, to designate up to two advisors
to the Company's Board of Directors who will have the right to attend and
observe meetings of the Board of Directors.

In February 1999, a former director made an unsecured loan in the aggregate
principal amount of $365,000 to the Company. Such loan is due on demand and
bears interest at 12% per annum.

Effective March 19, 1999, the Company sold 75% of its stock ownership in ESS to
one of its founders. The consideration for the Company's sale of its interest
was $100,000 in cash and a six year note in the amount of $380,000. It is not
anticipated that the Company will be involved in or control the operations of
ESS. The Company does not believe that this sale has a material effect on the
Company's financial condition or results of operations.



                                       42



<PAGE>
================================================================================








                            STOCK PURCHASE AGREEMENT

                                      dated

                                 March 30, 1999


                                     between


                            HUDSON TECHNOLOGIES, INC.

                                       and

                       FLEMING US DISCOVERY FUND III, L.P.








================================================================================





<PAGE>


                                TABLE OF CONTENTS

                                                                            Page

SECTION 1. SALE AND PURCHASE OF PREFERRED STOCK................................1

SECTION 2. CLOSING.............................................................2

SECTION 3. DEFINITIONS.........................................................2

SECTION 4. REPRESENTATIONS AND WARRANTIES OF THE COMPANY......................14
           4.1.  Corporate Existence, Power and Authority.....................14
           4.2.  Capital Stock................................................15
           4.3.  Subsidiaries.................................................16
           4.4.  Business.....................................................16
           4.5.  No Defaults or Conflicts.....................................16
           4.6.  Disclosure Materials; Other Information......................17
           4.7.  Litigation...................................................18
           4.8.  Taxes........................................................18
           4.9.  ERISA........................................................18
           4.10. Legal Compliance.............................................20
           4.11. Outstanding Securities.......................................20
           4.12. Permits, Licenses and Approvals; Intellectual 
                 Property and Other Rights....................................20
           4.13. Key Employees................................................21
           4.14. Properties...................................................21
           4.15. Suppliers and Customers......................................21
           4.16. Environmental Compliance.....................................22
           4.17. No Burdensome Agreements.....................................22
           4.18. Offering of Shares...........................................23
           4.19. SEC Reports..................................................23
           4.20. Indebtedness.................................................23
           4.21. Use of Proceeds..............................................24
           4.22. Other Names..................................................24
           4.23. Brokers......................................................24
    
SECTION 5. REPRESENTATIONS AND WARRANTIES OF THE PURCHASER....................24
           5.1.  Corporate Power and Authority................................24
           5.2.  Investment Intent............................................25
           5.3.  Brokers......................................................25
           5.4.  Ownership of Common Stock....................................25
        
                                        i

<PAGE>


                                                                            Page

SECTION 6. RESTRICTIONS ON TRANSFER...........................................26

SECTION 7. INFORMATION AS TO THE COMPANY......................................26
            7.1.  Financial Information.......................................26
            7.2.  Communication with Accountants..............................28
            7.3.  Inspection..................................................29
            7.4.  Notices.....................................................29

SECTION 8. AFFIRMATIVE COVENANTS..............................................30
            8.1.  Maintenance of Existence, Properties and Franchises; 
                  Compliance with Law; Taxes; Insurance.......................30
            8.2.  Office for Payment, Exchange and Registration; 
                  Location of Office; Notice of Change of Name or Office......31
            8.3.  Fiscal Year.................................................31
            8.4.  Environmental Matters.......................................32
            8.5.  Reservation of Shares.......................................33
            8.6.  Securities Exchange Act Registration........................33
            8.7.  Delivery of Information for Rule 144A Transactions..........33
            8.8.  Senior Securities...........................................34
            8.9.  Further Assurances..........................................34
            8.10. Stockholder Approval........................................34
            8.11. Shares Paid as Dividends....................................34
     
SECTION 9. NEGATIVE COVENANTS.................................................34
            9.1.  No Dilution or Impairment; No Changes in Capital Stock......35
            9.2.  Indebtedness................................................36
            9.3.  Consolidation, Merger and Sale..............................36
            9.4.  No Change in Business.......................................36
            9.5.  Restricted Payments; Investments............................36
            9.6.  Sale of Substantial Portion of Assets.......................36
            9.7.  Obligations to Affiliates...................................37
            9.8.  Transactions with Affiliates................................37
            9.9.  Liens.......................................................38
            9.10. Private Placement Status....................................38
            9.11. Maintenance of Public Market................................38
            9.12. Actions Prior to the Closing Date...........................39

                                       ii
       
<PAGE>

                                                                            Page

SECTION 10. CONDITIONS TO PURCHASER'S OBLIGATIONS.............................39
            10.1.  Certificate of Amendment; Stockholders' Agreement;
                   Registration Rights Agreement..............................39
            10.2.  Certificates for Shares....................................39
            10.3.  Senior Status..............................................40
            10.4.  Accuracy of Representations and Warranties.................40
            10.5.  Compliance with Agreements.................................40
            10.6.  Officers' Certificates.....................................40
            10.7.  Proceedings................................................40
            10.8.  Legality; Governmental and Other Authorization.............40
            10.9.  No Material Adverse Change.................................41
            10.10. Opinion of Counsel.........................................41
            10.11. Purchases of Shares........................................41
            10.12. Consents...................................................41
            10.13. Other Documents and Opinions...............................41
         
SECTION 11. BREACH OF REPRESENTATIONS, WARRANTIES AND COVENANTS...............42

SECTION 12. SPECIFIC PERFORMANCE..............................................42

SECTION 13. EXPENSES..........................................................43

SECTION 14. DIRECT PAYMENTS...................................................44

SECTION 15. AMENDMENTS AND WAIVERS............................................45

SECTION 16. EXCHANGE OF SHARES; CANCELLATION OF SURRENDERED 
            SHARES; REPLACEMENT...............................................45

SECTION 17. NOTICES...........................................................46

SECTION 18. MISCELLANEOUS.....................................................46

                                      iii

<PAGE>

                            STOCK PURCHASE AGREEMENT


     This STOCK PURCHASE AGREEMENT is dated as of March 30, 1999 between Hudson
Technologies, Inc., a New York corporation (the "Company"), and the Purchaser
listed on the signature page of this Agreement (the "Purchaser").


                             W I T N E S S E T H :


     WHEREAS, the Company desires to issue and sell to the Purchaser, and the
Purchaser desires to purchase from the Company, shares of the Company's Series A
Convertible Preferred Stock, par value $.01 per share (the "Series A Convertible
Preferred Stock"), upon the terms and provisions hereinafter set forth;

     NOW, THEREFORE, in consideration of the mutual covenants and agreements set
forth herein and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties agree as follows:


SECTION 1. SALE AND PURCHASE OF PREFERRED STOCK

     (a) The Company agrees to sell to the Purchaser and, subject to the terms
and conditions hereof and in reliance upon the representations and warranties of
the Company contained herein or made pursuant hereto, the Purchaser agrees to
purchase from the Company at the Closing provided for in Section 2 hereof, the
number of shares of Series A Convertible Preferred Stock set forth opposite the
Purchaser's name on Schedule 1 hereto. The shares of Series A Convertible
Preferred Stock being acquired under this Agreement and by the other Purchaser
under the other Stock Purchase Agreement (as hereinafter defined) are
collectively referred to herein as the "Shares", containing rights and
privileges as more fully set forth in the Certificate of Amendment of the
Certificate of Incorporation of the Company in the form attached hereto as
Exhibit A (the "Certificate of Amendment").

     (b) The aggregate purchase price to be paid to the Company by the Purchaser
for the Shares to be purchased by the Purchaser pursuant to this Agreement shall
be the amount set forth opposite the Purchaser's name on Schedule 1 hereto. No
further payment shall be required from the Purchaser for the Shares.

     (c) The Shares are being sold to the purchasers listed on Schedule 1 hereto
(the "Purchasers") pursuant to this Agreement and the other Series A Convertible
Preferred Stock Purchase Agreement (both of such agreements collectively, as
from time to time assigned, supplemented or amended or as the terms thereof may
be waived, the "Stock Purchase

<PAGE>

Agreements"). Both Stock Purchase Agreements shall be dated the date hereof and
shall be identical except as to the identities of the respective Purchasers. The
sale of Shares to each Purchaser under each Stock Purchase Agreement is to be a
separate sale, and no Purchaser shall have any liability under any Stock
Purchase Agreement other than the Stock Purchase Agreement to which it is a
party.

     (d) The Company will use the proceeds realized from the sale of the Shares
to fund the roll-out of the Depot Strategy program, fees and expenses of the
transactions contemplated hereby and for working capital purposes.


SECTION 2. CLOSING

     (a) Subject to the terms and conditions hereof, the closing of the purchase
and sale of the Shares to be purchased by the Purchaser will be deemed to have
taken place at the offices of Morgan, Lewis & Bockius LLP, 101 Park Avenue, New
York, New York at 9:00 A.M., New York City time, on March 30, 1999, or such
other time and date as shall be mutually agreed to by the Company and the
Purchaser (the "Closing") (such time and date are herein referred to as the
"Closing Date").

     (b) Subject to the terms and conditions hereof, at the Closing (i) the
Company will deliver to the Purchaser a certificate registered in the
Purchaser's name (or the name of its nominee, if any, as specified on Schedule 1
hereto) evidencing the number of Shares set forth opposite the Purchaser's name
on Schedule 1 and (ii) upon the Purchaser's receipt thereof, the Purchaser will
deliver to the Company a certified or official bank check (or wire transfer) in
an amount equal to the aggregate purchase price (as specified in Section 1(b)
hereof) for the Shares to be purchased by the Purchaser payable to the order of
the Company in federal or other immediately available funds.


SECTION 3. DEFINITIONS

     (a) For purposes of this Agreement, the following definitions shall apply
(such definitions to be equally applicable to both the singular and plural forms
of the terms defined):

          "Affiliate", when used with respect to any Person, means (i) if such
     Person is a corporation, any officer or director thereof (other than a
     director elected pursuant to Section 4 of the Certificate of Amendment) and
     any Person which is, directly or indirectly, the beneficial owner (by
     itself or as part of any group) of more than five percent (5%) of any class
     of any equity security (within the meaning of the Securities Exchange Act)
     thereof, and, if such beneficial owner is a partnership, any general
     partner thereof, or if such beneficial owner is a 

                                       -2-

<PAGE>

     corporation, any Person controlling, controlled by or under common control
     with such beneficial owner, or any officer or director of such beneficial
     owner or of any corporation occupying any such control relationship, (ii)
     if such Person is a partnership, any general or limited partner thereof,
     and (iii) any other Person which, directly or indirectly, controls or is
     controlled by or is under common control with such Person. For purposes of
     this definition, "control" (including the correlative terms "controlling",
     "controlled by" and "under common control with"), with respect to any
     Person, shall mean possession, directly or indirectly, of the power to
     direct or cause the direction of the management and policies of such
     Person, whether through the ownership of voting securities or by contract
     or otherwise. The holding of Shares (or of Conversion Shares obtained upon
     conversion of Shares), and the rights under any Stock Purchase Agreement or
     under the Certificate of Amendment, the Stockholders' Agreement or the
     Registration Rights Agreement (or the exercise of any such rights,
     including, without limitation, nominating a director to the Board (or Board
     committee) of the Company and/or sending an observer to Board (or Board
     committee) meetings of the Company), shall not cause a Purchaser to be
     deemed to be an "Affiliate" of the Company.

          "Affiliate Loan" means the loan made to the Company by Fredrick T.
     Zugibe, Sr., in the original principal amount of $365,000, pursuant to the
     promissory note dated February 25, 1999.

          "Agreement" means this Stock Purchase Agreement (together with
     exhibits and schedules) as from time to time assigned, supplemented or
     amended or as the terms hereof may be waived.

          "Benefit Plan" means any Plan, existing at the Closing, established or
     to which contributions have at any time been made by the Company, or any
     predecessor of any of the foregoing, or under which any employee, former
     employee or director of the Company or any beneficiary thereof is covered,
     is eligible for coverage or has benefit rights.

          "Board" or "Board of Directors" means with respect to any Person which
     is a corporation, a business trust or other entity, the board of directors
     or other group, however designated, which is charged with legal
     responsibility for the management of such Person, or any committee of such
     board of directors or group, however designated, which is authorized to
     exercise the power of such board or group in respect of the matter in
     question.

          "Business Day" means any day other than a Saturday, Sunday or any day
     on which banks in the location of the office of the Company provided for in
     Section 17 hereof are authorized or obligated to close.

                                       -3-

<PAGE>
          "Capitalized Lease" means any lease to which the Company is party as
     lessee, or by which it is bound, under which it leases any property (real,
     personal or mixed) from any lessor other than the Company, and which either
     is required to be capitalized in accordance with generally accepted
     accounting principles consistently applied, or, even if not so required to
     be capitalized, shall have (or have had), at the time first entered into,
     an initial term of greater than three (3) years (including leases of
     shorter duration which are or were extendible to a total term greater than
     three (3) years at the option of the lessor). The value of Capitalized
     Leases, as of the time of any determination thereof, shall mean the sum of
     the then present values, determined as hereinafter provided, of future
     obligations of lessees under then existing Capitalized Leases. To compute
     the value of any Capitalized Lease, the following methods shall be used, as
     applicable:

          (i)  values of leases required to be capitalized in accordance with
               generally accepted accounting principles shall be computed in
               accordance with such principles; and

          (ii) values of other leases (and values of contracts or other items
               which this Agreement provides are to be valued as if they were
               Capitalized Leases) shall be computed by discounting, to the date
               of determination, at an assumed interest rate of eight percent
               (8%) per annum, the minimum amount of future rental payments that
               will be due under the related documentation, including rental
               payments that may be due during extensions which are at the other
               party's option, but excluding any amounts in respect of insurance
               on, taxes on and/or maintenance of the properties subject to such
               leases (provided that such amounts are owed and paid only to the
               extent actually incurred).

          "Certificate of Amendment" has the meaning set forth in Section 1(a)
     hereof.

          "Closing" has the meaning set forth in Section 2(a) hereof.

          "Closing Date" has the meaning set forth in Section 2(a) hereof.

          "Code" means the Internal Revenue Code of 1986, as amended from time
     to time, and the regulations and interpretations thereunder.

          "Commission" means the Securities and Exchange Commission and any
     other similar or successor agency of the federal government administering
     the Securities Act or the Securities Exchange Act.

          "Common Stock" means the Company's Common Stock, par value $.01 per
     share, and shall also include any common stock of the Company hereafter

                                       -4-
<PAGE>

     authorized and any capital stock of the Company of any other class
     hereafter authorized which is not preferred as to dividends or assets over
     any other class of capital stock of the Company or which has ordinary
     voting power for the election of directors of the Company.

          "Company" means Hudson Technologies, Inc., a New York corporation, its
     successors and assigns.

          "Consolidated" or "consolidated", when used with reference to any
     financial term in this Agreement, means the aggregate for the Company of
     the amounts signified by such term for all such Persons, with intercompany
     items eliminated, and, with respect to net worth, after eliminating the
     portion of net worth properly attributable to minority interests, if any,
     in the capital of any such Person (other than in the capital of the
     Company) and otherwise as determined in accordance with generally accepted
     accounting principles consistently applied (except as otherwise expressly
     provided herein).

          "Conversion Share" or "Conversion Shares" means the shares of the
     Company's Common Stock obtained or obtainable upon conversion of Shares and
     shall also include any capital stock or other securities into which
     Conversion Shares are changed and any capital stock or other securities
     resulting from or comprising a reclassification, combination or subdivision
     of, or a stock dividend on, any Conversion Shares. In the event that any
     Conversion Shares are sold either in a public offering pursuant to a
     registration statement under the Securities Act or pursuant to a Rule 144
     Transaction, then the transferees of such Conversion Shares shall not be
     entitled to any benefits under this Agreement with respect to such
     Conversion Shares and such Conversion Shares shall no longer be considered
     to be "Conversion Shares".

          "Designated Entity" means, in connection with the rights of any Person
     holding less than thirty percent (30%), in the aggregate, of the originally
     issued Shares and Conversion Shares, (i) as long as any Shares or
     Conversion Shares are held by any Person identified in clause (i) or (ii)
     of the definition of "Fleming Holders", Fleming Capital Management, 320
     Park Avenue, New York, NY 10022, Attention: Robert L. Burr and (ii) if no
     Shares or Conversion Shares are held by a Person identified in clause (i)
     or (ii) of the definition of "Fleming Holders", the entity designated by
     the Transferee holding the largest number of such shares, provided, that
     such Transferee owns thirty percent (30%) or more, in the aggregate, of the
     originally issued Shares and Conversion Shares (in which case such
     Transferee shall provide notice to the Corporation of such entity). For so
     long as no Shares or Conversion Shares are held by any Person identified in
     clause (i) or (ii) of the definition of "Fleming Holders" and no Person
     holds thirty percent (30%) or more, in the aggregate, of the originally
     issued Shares and Conversion Shares, there shall be no Designated Entity.
     For purposes of this definition of "Designated Entity," the 

                                       -5-

<PAGE>

     calculation of a Person's percentage holdings of Conversion Shares shall be
     determined based upon the number of Shares from which such Conversion
     Shares derived.

          "Disclosure Material" has the meaning specified in Section 4.6(a)
     hereof.

          "Environmental Laws" means all federal, state, local, foreign, civil
     and criminal laws, statutes, ordinances, orders, codes, Environmental
     Permits, rules, policies and regulations and common law relating to the
     protection of the environment and human health or relating to the handling,
     use, generation, treatment, storage, transportation or disposal of
     Hazardous Materials, including but not limited to the Resource Conservation
     and Recovery Act of 1976, 42 U.S.C. ss. 6901 et seq.; the Toxic Substances
     Control Act, 15 U.S.C. ss. 2601 et seq.; the Comprehensive Environmental
     Response, Compensation and Liability Act of 1980, 42 U.S.C. ss. 9601 et
     seq.; the Federal Water Pollution Control Act, 33 U.S.C. ss. 1251 et seq.;
     the Clean Air Act, 42 U.S.C. ss. 7401 et seq.; the Hazardous Materials
     Transportation Act, 49 U.S.C. ss. 1801 et seq.; the Occupational Safety and
     Health Act, 29 U.S.C. ss. 651; the Federal Insecticide, Fungicide and
     Rodenticide Act, 7 U.S.C. ss. 136y et seq.; and the Oil Pollution Act of
     1990, 33 U.S.C. ss. 2701 et seq., all as may be amended or superseded from
     time to time.

          "Environmental Lien" has the meaning set forth in Section 4.16(d)
     hereof.

          "Environmental Permits" means all permits, licenses, approvals,
     authorizations or consents required by any Governmental Authority under any
     applicable Environmental Law and includes any and all orders, consent
     orders or binding agreements issued or entered into by a Governmental
     Authority under any applicable Environmental Law.

          "ERISA" means Employee Retirement Income Security Act of 1974, as
     amended.

          "ERISA Affiliate" means each "person" (as defined in Section 3(9) of
     ERISA) which is under "common control" with the Company (within the meaning
     of Section 414(b), (c), (m) or (o) of the Code).

          "Fleming Funds" means Fleming US Discovery Fund III, L.P. and Fleming
     US Discovery Offshore Fund III, L.P.

          "Fleming Holders" means (i) the Fleming Funds, (ii) any Affiliate,
     officer or employee of an Affiliate or investment fund managed by an
     Affiliate of the Fleming Funds to which the Fleming Funds may transfer
     record and/or beneficial ownership of the Shares or the Conversion Shares
     and (iii) any transferee of Shares or Conversion Shares from a Person named
     in clause (i) or (ii) hereof (provided that such transferee is consented to
     by the Company, such consent not to be unreasonably withheld) other than a
     transferee of Shares or Conversion 

                                       -6-

<PAGE>

     Shares sold in either a public offering pursuant to a registration
     statement under the Securities Act or pursuant to a Rule 144 Transaction.

          "Governmental Authority" means any federal, state, or local
     governmental agency or authority (including regulatory authority) having
     jurisdiction over the Company or any of its respective assets or
     businesses.

          "Guaranty" means (i) any guaranty or endorsement of the payment or
     performance of, or any contingent obligation in respect of, any
     indebtedness or other obligation of any other Person, (ii) any other
     arrangement whereby credit is extended to one obligor (directly or
     indirectly) on the basis of any promise or undertaking of another Person
     (a) to pay the indebtedness of such obligor, (b) to purchase an obligation
     owed by such obligor, (c) to purchase or lease assets (or to provide funds,
     goods or services) under circumstances that would enable such obligor to
     discharge one or more of its obligations or (d) to maintain the capital,
     working capital, solvency or general financial condition of such obligor,
     in each case whether or not such arrangement is disclosed in the balance
     sheet of such other Person or is referred to in a footnote thereto and
     (iii) any liability as a general partner of a partnership in respect of
     indebtedness or other obligations of such partnership; provided, however,
     that the term "Guaranty" shall not include (1) endorsements for collection
     or deposit in the ordinary course of business or (2) obligations of the
     Company which would constitute Guaranties solely by virtue of the
     continuing liability of a Person which has sold assets subject to
     liabilities for the liabilities which were assumed by the Person acquiring
     the assets, unless such liability is required to be carried on the
     consolidated balance sheet of the Company. The amount of any Guaranty and
     the amount of indebtedness resulting from such Guaranty shall be the
     maximum amount of the guarantor's potential obligation in respect of such
     Guaranty.

          "Hazardous Materials" means any petroleum, petroleum hydrocarbons,
     petroleum waste or petroleum products, underground storage tanks, asbestos
     or asbestos-containing materials, pesticides, lead and lead-containing
     materials, urea formaldehyde insulation and polychlorinated biphenyls
     (PCBs), ionizing and non-ionizing radiation including radon and
     electromagnetic frequency radiation; and any chemicals, materials,
     substances or wastes in any amount or concentration which are now or
     hereafter "hazardous substances," "hazardous wastes," "hazardous
     materials," "extremely hazardous wastes," "restricted hazardous wastes,"
     "toxic substances," "toxic pollutants" or words of similar import, under
     any Environmental Law.

          "Indebtedness" of any Person means, without duplication, as of any
     date as of which the amount thereof is to be determined, (i) all
     obligations of such Person to repay money borrowed (including, without
     limitation, all notes payable and drafts accepted representing extensions
     of credit, all obligations under letters 


                                       -7-

<PAGE>

     of credit, all obligations evidenced by bonds, debentures, notes or other
     similar instruments and all obligations upon which interest charges are
     customarily paid), (ii) all Capitalized Leases in respect of which such
     Person is liable as lessee or as the guarantor of the lessee, (iii) all
     monetary obligations which are secured by any Lien existing on property
     owned by such Person whether or not the obligations secured thereby have
     been incurred or assumed by such Person, (iv) all conditional sales
     contracts and similar title retention debt instruments under which such
     Person is obligated to make payments, (v) all Guaranties by such Person and
     (vi) all contractual obligations (whether absolute or contingent) of such
     Person to repurchase goods sold and distributed. "Indebtedness" shall not
     include, however, any unfunded obligations in any employee pension benefit
     plan (as defined in ERISA) of the Company.

          "Investment" means, with respect to any Person, (i) any loan, advance
     or extension of credit by such Person to, and any contributions to the
     capital of, any other Person, (ii) any Guaranty by such Person, (iii) any
     interest in any capital stock, equity interest or other securities of any
     other Person, (iv) any transfer or sale of property of such Person to any
     other Person other than upon full payment, in cash, or not less than the
     agreed sale price or the fair value of such property, whichever is higher
     and (v) any commitment or option to make an Investment if, in the case of
     an option, the consideration therefor exceeds $50,000, and any of the
     foregoing under clauses (i) through (v) shall be considered an Investment
     whether such Investment is acquired by purchase, exchange, merger or any
     other method; provided, that the term "Investment" (1) shall not include an
     Investment in the Company, (2) shall not include current trade and customer
     accounts receivable and allowances, provided they relate to goods furnished
     in the ordinary course of business and are given in accordance with the
     customary practices of the Company, (3) shall not include temporary
     investments of excess cash of the Company in any of the following: (A)
     investment grade obligations maturing within one year of their issuance
     which as to principal and interest constitute direct obligations of, or
     obligations guaranteed by, the United States of America, (B) negotiable
     certificates of deposit of banks or trust companies which are organized
     under the laws of the United States of America or any state thereof and
     which have capital and surplus of at least $500,000,000, (C) commercial
     paper which is rated not less than prime-one or A-1 or their equivalents by
     Moody's Investor Service, Inc. or Standard & Poor's Corporation or their
     successors, (D) any repurchase agreement secured by any one or more of the
     foregoing and (E) money market funds primarily investing in any of the
     foregoing securities and sponsored by or affiliated with nationally
     recognized brokerage or investment advisory firms, and (4) shall not
     include Investments of the Company existing on the date hereof and
     disclosed on Schedule 3 hereto.

          "Lien" means any mortgage, pledge, hypothecation, assignment, deposit
     arrangement, encumbrance, lien (statutory or other), or preference,
     priority or other security interest of any kind or nature whatsoever
     (including, without 

                                       -8-

<PAGE>

     limitation, any conditional sale or other title retention agreement, any
     financing lease having substantially the same effect as any of the
     foregoing, any assignment or other conveyance of any right to receive
     income and any assignment of receivables with recourse against the
     assignor), any filing of a financing statement as debtor under the Uniform
     Commercial Code or any similar statute and any agreement to give or make
     any of the foregoing.

          "Outside Directors" means those directors on the Company's Board of
     Directors at any time who are not otherwise Affiliates of or employed by
     the Company.

          "Outstanding" or "outstanding" means (a) when used with reference to
     the Shares or the Conversion Shares as of a particular time, all Shares or
     Conversion Shares theretofore duly issued except (i) Shares or Conversion
     Shares theretofore reported as lost, stolen, mutilated or destroyed or
     surrendered for transfer, exchange or replacement, in respect of which new
     or replacement Shares or Conversion Shares have been issued by the Company,
     (ii) Shares or Conversion Shares theretofore cancelled by the Company and
     (iii) Shares or Conversion Shares registered in the name of, as well as
     Shares or Conversion Shares owned beneficially by, the Company, or any of
     its Affiliates. For purposes of the preceding sentence, in no event shall
     "Affiliates" include (x) the persons which are identified as "Purchasers"
     on Schedule 1 hereto or (y) any Affiliates of any such persons.

          "Pension Plan" means any "employee pension benefit plan" as defined in
     Section 3(2) of ERISA.

          "Person" or "person" means an individual, corporation, partnership,
     firm, association, joint venture, trust, unincorporated organization,
     government, governmental body, agency, political subdivision or other
     entity.

          "Plan" means any bonus, incentive compensation, deferred compensation,
     pension, profit sharing, retirement, stock purchase, stock option, stock
     ownership, stock appreciation rights, phantom stock, leave of absence,
     layoff, vacation, day or dependent care, legal services, cafeteria, life,
     health, accident, disability, workmen's compensation or other insurance,
     severance, separation or other employee benefit plan, practice, policy or
     arrangement of any kind, whether written or oral, or whether for the
     benefit of a single individual or more than one individual including, but
     not limited to, any "employee benefit plan" within the meaning of Section
     3(3) of ERISA.

          "Preferred Stock" means any class of the capital stock of a
     corporation (whether or not convertible into any other class of such
     capital stock) which has any right, whether absolute or contingent, to
     receive dividends or other 

                                       -9-

<PAGE>

     distributions of the assets of such corporation (including, without
     limitation, amounts payable in the event of the voluntary or involuntary
     liquidation, dissolution or winding-up of such corporation), which right is
     superior to the rights of another class of the capital stock of such
     corporation. "Preferred Stock" includes, without limitation, the Series A
     Convertible Preferred Stock.

          "Purchaser" means the person who accepts and agrees to the terms
     hereof as indicated by such person's signature (as "the undersigned
     Purchaser") on the execution page of this Agreement, together with its
     successors and assigns.

          "Purchasers" has the meaning set forth in Section 1(c) hereof,
     together with their respective successors and assigns.

          "Registration Rights Agreement" means the Registration Rights
     Agreement, dated as of the Closing Date, among the Company and each of the
     Purchasers.

          "Restricted Payment" means (i) every payment in connection with the
     redemption, purchase, retirement or other acquisition by or on behalf of
     the Company of any shares of the Company's capital stock (as defined
     below), whether or not owned by the Company, (ii) any prepayments or
     repayments made on Indebtedness of the Company, (iii) every payment to or
     on behalf of any Affiliate of the Company on account of or with respect to
     any lease arrangements, and (iv) every payment by or on behalf of the
     Company (whether as repayment or prepayment of principal or as interest or
     otherwise) on or with respect to (A) any obligation to repay money borrowed
     owing to any Affiliate of the Company or (B) any obligation, to any Person,
     of any Affiliate of the Company or to any other holder of shares of the
     Company's capital stock (as defined below), which obligation is assumed, or
     is the subject of a Guaranty, by the Company; provided, however, that the
     term "Restricted Payment" shall not apply to (1) any payment in respect of
     capital stock of the Company to the extent payable in shares of the capital
     stock of the Company, (2) any regularly scheduled prepayment or repayment
     of Indebtedness, provided that such Indebtedness being prepaid or repaid is
     not at the time of such prepayment or repayment or at any prior time
     thereto owing to an Affiliate of the Company, provided that regularly
     scheduled payments or prepayments pursuant to the Affiliate Loan are not
     "Restricted Payments", (3) payments to DuPont Chemical and Energy
     Operations, Inc. and E.I. DuPont de Nemours and Company in the ordinary
     course of business, consistent with past practice, and not in connection
     with any financing or extraordinary corporate transaction are not
     "Restricted Payments", or (4) any payments, distributions or other
     transfers or actions on or with respect to the Shares or the Conversion
     Shares or to the Purchasers (or holders of Shares or the Conversion Shares)
     under the Stock Purchase Agreements. For purposes of this 


                                      -10-

<PAGE>

     definition, "capital stock" shall also include warrants and other rights
     and options to acquire shares of capital stock (whether upon exercise,
     conversion, exchange or otherwise).

          "Rule 144" means (i) Rule 144 under the Securities Act as such Rule is
     in effect from time to time and (ii) any successor rule, regulation or law,
     as in effect from time to time.

          "Rule 144A" means (i) Rule 144A under the Securities Act as such Rule
     is in effect from time to time and (ii) any successor rule, regulation or
     law, as in effect from time to time.

          "Rule 144 Transaction" means a transfer of Conversion Shares (A)
     complying with Rule 144 as such Rule is in effect on the date of such
     transfer (but not including a sale other than pursuant to "brokers'
     transactions" as defined in clauses (1) and (2) of paragraph (g) of such
     Rule as in effect on the date hereof) and (B) occurring at a time when
     Conversion Shares are registered pursuant to Section 12 of the Securities
     Exchange Act.

          "SEC Reports" has the meaning set forth in Section 4.19 hereof.

          "Securities Act" means the Securities Act of 1933, as amended, and the
     rules, regulations and interpretations thereunder.

          "Securities Exchange Act" means the Securities Exchange Act of 1934,
     as amended, and the rules, regulations and interpretations thereunder.

          "Series A Convertible Preferred Stock" means the Company's Series A
     Convertible Preferred Stock, par value $.01 per share, which will have the
     rights, powers and privileges on the Closing Date as more fully set forth
     in the Certificate of Amendment.

          "Shares" has the meaning set forth in Section 1(a) hereof. In the
     event that any Shares are sold either in a public offering pursuant to a
     registration statement under Section 5 of the Securities Act or pursuant to
     a Rule 144 Transaction, then the transferees of such Shares shall not be
     entitled to any benefits under this Agreement with respect to such Shares
     and such Shares shall no longer be considered to be "Shares" for purposes
     of any consent or waiver provision of this Agreement.

          "Stock Purchase Agreements" has the meaning set forth in Section 1(c)
     hereof.

                                      -11-

<PAGE>

          "Stockholders' Agreement" means the Stockholders' Agreement, dated as
     of the Closing Date, among the Company, the Purchasers and certain other
     stockholders of the Company.

          "Stockholders' Meeting" means the Company's 1999 annual meeting of
     stockholders.

          "Subsidiary", with respect to any Person, means any corporation,
     association or other entity of which more than 50% of the total voting
     power of shares of stock or other equity interests (without regard to the
     occurrence of any contingency) to vote in the election of directors,
     managers or trustees thereof is, at the time as of which any determination
     is being made, owned or controlled, directly or indirectly, by such Person
     or one or more of its Subsidiaries, or both. The term "Subsidiary" or
     "Subsidiaries" when used herein without reference to any particular Person,
     means a Subsidiary or Subsidiaries of the Company.

          "Tax" or "Taxes" means all federal, state, local or foreign net or
     gross income, gross receipts, net proceeds, sales, use, ad valorem, value
     added, franchise, bank shares, withholding, payroll, employment, excise,
     property, alternative or add-on minimum, environmental or other taxes,
     assessments, duties, fees, levies or other governmental charges of any
     nature whatsoever, whether disputed or not, together with any interest,
     penalties, additions to tax or additional amounts with respect thereto.

          "Tax Returns" means any returns, reports or statements (including any
     information returns) required to be filed for purposes of a particular Tax.

          "Taxing Authority" means any governmental agency, board, bureau, body,
     department or authority of any United States federal, state or local
     jurisdiction, or any foreign jurisdiction, having or purporting to exercise
     jurisdiction with respect to any Tax.

          "Transferees" shall mean any transferee (except for a Fleming Holder)
     of Shares or Conversion Shares from a Fleming Holder. Transferees shall not
     include a transferee of Shares or Conversion Shares sold in either a public
     offering pursuant to a registration statement under the Securities Act or
     pursuant to a Rule 144 Transaction.


     (b) For all purposes of this Agreement, except as otherwise expressly
provided or unless the context otherwise requires:

          (i) the words "herein", "hereof" and "hereunder" and other words of
     similar import refer to this Agreement as a whole and not to any particular
     Section or other subdivision;

                                      -12-

<PAGE>

          (ii) all accounting terms not otherwise defined herein have the
     meanings assigned to them in accordance with generally accepted accounting
     principles consistently applied (except as otherwise provided herein);

          (iii) all computations provided for herein, if any, shall be made in
     accordance with generally accepted accounting principles consistently
     applied (except as otherwise provided herein);

          (iv) any uses of the masculine, feminine or neuter gender shall also
     be deemed to include any other gender, as appropriate;

          (v) all references herein to actions by the Company, such as "create",
     "sell", "transfer", "dispose of", etc., mean such action whether voluntary
     or involuntary, by operation of law or otherwise;

          (vi) the exhibits and schedules to this Agreement shall be deemed a
     part of this Agreement;

          (vii) each of the representations and warranties of the Company
     contained in Section 4 hereof is separate and is not limited, qualified or
     modified by the existence, wording or satisfaction of any other
     representation or warranty of the Company in Section 4 hereof or otherwise;

          (viii) each of the covenants of the Company contained in Sections 7, 8
     and 9 hereof or otherwise contained in any Stock Purchase Agreement, the
     Certificate of Amendment, the Stockholders' Agreement or the Registration
     Rights Agreement is separate and is not limited or satisfied by the
     existence, wording or satisfaction of any other covenant of the Company in
     Section 7, 8 or 9 hereof or otherwise; and

          (ix) all references herein (in covenants or otherwise) to any
     action(s) which are to be taken (or which are prohibited from being taken)
     by any Person or the Company shall apply to such Person or the Company, as
     the case may be, whether such action is taken directly or indirectly.


                                      -13-
<PAGE>

SECTION 4. REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company represents and warrants to the Purchaser as follows as of the
date hereof and as of the Closing Date:

     4.1. Corporate Existence, Power and Authority.

     (a) The Company is a corporation duly organized, validly existing and in
good standing under the laws of its jurisdiction of incorporation. The Company
is duly qualified, licensed and authorized to do business and is in good
standing in each jurisdiction in which it owns or leases any property or in
which the conduct of its business requires it to so qualify or be so licensed,
except for such jurisdictions where the failure to so qualify or be so licensed
would not have a material adverse effect on the Company's assets, properties,
liabilities, business, affairs, results of operations, condition (financial or
otherwise) or prospects.

     (b) No proceeding has been commenced looking toward the dissolution or
merger of the Company or the amendment of its certificate of incorporation
(other than the Certificate of Amendment). The Company is not in violation in
any respect of its certificate of incorporation or by-laws.

     (c) The Company has all requisite corporate power and authority to own or
to hold under lease and to operate the properties it owns or holds and to
conduct its business as now being conducted.

     (d) The Company has all requisite corporate power and authority to execute,
deliver, enter into, consummate the transactions contemplated by and perform its
obligations under (i) the Stock Purchase Agreements, including, without
limitation, the issuance by the Company of the Shares and the Conversion Shares
as contemplated herein and therein and in the Certificate of Amendment, (ii) the
Stockholders' Agreement and (iii) the Registration Rights Agreement. The
execution, delivery and performance of the Stock Purchase Agreements, the
Stockholders' Agreement and the Registration Rights Agreement by the Company
(including, without limitation, the issuance by the Company of the Shares and
the Conversion Shares as contemplated herein and therein and in the Certificate
of Amendment) have been duly authorized by all required corporate actions. The
Company has duly executed and delivered the Stock Purchase Agreements, the
Stockholders' Agreement and the Registration Rights Agreement. The Stock
Purchase Agreements, the Stockholders' Agreement and the Registration Rights
Agreement constitute the legal, valid and binding obligations of the Company
enforceable in accordance with their respective terms, subject to bankruptcy,
insolvency, reorganization, moratorium and other similar laws relating to the
rights of creditors generally.


                                      -14-
<PAGE>

     4.2. Capital Stock.

     (a) Schedule 6(a) hereto correctly and completely lists (i) the authorized
capital stock of the Company (Common Stock and Preferred Stock), (ii) the number
of designated shares of Preferred Stock in each series or class after giving
effect to the Certificate of Amendment and (iii) on the Closing Date, after
giving effect to the issuance of Shares contemplated by the Stock Purchase
Agreements, the number of shares outstanding in each series or class. All of
such outstanding shares are, or on the Closing Date will be, duly authorized,
validly issued and outstanding, fully paid and non-assessable. The shares of the
Company's Common Stock issuable upon conversion of the Series A Convertible
Preferred Stock will be, when issued in accordance with the terms of the Series
A Convertible Preferred Stock, duly authorized, validly issued, fully paid and
non-assessable. Except as provided in the Certificate of Amendment, none of the
shares of the Company's capital stock which will be outstanding at the Closing
(i) were or will be subject to preemptive rights when issued or (ii) provide the
holders thereof with any preemptive rights with respect to any issuances of
capital stock.

     (b) Schedule 6(b) hereto correctly and completely lists the number and
purpose for which such shares of the Company's Common Stock are reserved for
issuance by the Company.

     (c) Except as referred to in Schedule 6(b), there are no outstanding
options, warrants, subscriptions, rights, convertible securities or other
agreements or plans under which the Company may become obligated to issue, sell
or transfer shares of its capital stock or other securities.

     (d) Except as disclosed on Exhibit B hereto, there are and will be no
outstanding registration rights with respect to any capital stock of the
Company, which (in either case) will be outstanding on the Closing Date, or any
capital stock referred to in Section 4.2(b) or 4.2(c).

     (e) Except as disclosed on Exhibit B hereto, there are no voting
agreements, voting trusts, proxies or other agreements or understandings with
respect to the voting of any capital stock of the Company.

     (f) Except as disclosed on Exhibit B hereto, there are no anti-dilution
protections or other adjustment provisions in existence with respect to any
capital stock of the Company or any capital stock referred to in Section 4.2(b)
or 4.2(c).

     (g) The Certificate of Amendment has been duly adopted by the Company's
Board of Directors and, when filed with the Secretary of State of the State of
New York, will be fully effective as an amendment to the Company's certificate
of incorporation. Upon filing of the Certificate of Amendment with the Secretary
of State of New York, the Shares will have all of the rights, priorities and
terms set forth in the Certificate of Amendment.


                                      -15-
<PAGE>

     (h) Those Persons who own, directly or indirectly, more than 5% of the
Company's outstanding Common Stock are as follows: Kevin J. Zugibe, Thomas P.
Zugibe, Stephen P. Mandracchia, Stephen J. Cole-Hatchard, Fredrick T. Zugibe and
DuPont Chemical and Energy Operations, Inc.

     4.3. Subsidiaries.

     The Company has no Subsidiaries other than Hudson Holdings, Inc., Hudson
Technologies Company and Environmental Support Solutions, Inc. The Company has
no Investments in any other Person, except as described in the preceding
sentence.

     4.4. Business.

     The Company sells refrigerants and provides refrigerant management
services, consisting primarily of recovery and reclamation of the refrigerants
used in commercial air conditioning and refrigeration systems, as well as
RefrigerantSide(TM) services, through which the Company performs decontamination
to remove moisture, oils and other contaminants in such systems. The Company
neither currently engages in, nor has any intention of engaging in, any other
business.

     4.5. No Defaults or Conflicts.

     (a) The Company is not in violation or default in any material respect (and
is not in default in any material respect regarding any Indebtedness) under any
indenture, agreement or instrument to which it is a party or by which it or its
properties may be bound. The Company is not in default under any material order,
writ, injunction, judgment or decree of any court or other Governmental
Authority or arbitrator(s) having jurisdiction over the Company.

     (b) The execution, delivery and performance by the Company of the Stock
Purchase Agreements, the Stockholders' Agreement and the Registration Rights
Agreement and any of the transactions contemplated hereby or thereby (including,
without limitation, the issuance of the Shares and the Conversion Shares as
contemplated herein and therein and in the Certificate of Amendment and the
adoption of the Certificate of Amendment as an amendment to the Company's
certificate of incorporation) do not and will not (i) violate or conflict with,
with or without the giving of notice or the passage of time or both, any
provision of (A) the certificate of incorporation or by-laws of the Company or
(B) any material law, rule, regulation or order of any Governmental Authority,
or any material judgment, writ, injunction, decree, award or other action of any
court, Governmental Authority or arbitrator(s), or any agreement, indenture or
other instrument applicable to the Company or any of its properties, (ii) result
in the creation of any Lien upon any of the Company's properties, assets or
revenues, (iii) require the consent, waiver, approval, order or authorization
of, or declaration, registration, qualification or filing with, any Person
(whether or not a Governmental Authority and including, without limitation,


                                      -16-
<PAGE>

any shareholder approval), or (iv) cause antidilution clauses of any outstanding
securities to become operative or give rise to any preemptive rights.

     4.6. Disclosure Materials; Other Information.

     (a) The Company has previously furnished to the Purchaser the materials
described on Schedule 4 hereto (the "Disclosure Material"). The audited and
unaudited financial statements referred to or contained in the materials
referred to on Schedule 4 fairly present the consolidated financial condition of
the Company as of the respective dates thereof and the consolidated results of
the operations of the Company for such periods and have been prepared in
accordance with generally accepted accounting principles consistently applied,
except that any such unaudited statements may omit notes and may be subject to
year-end adjustment.

     (b) Since September 30, 1998, except as disclosed on Exhibit B hereto, (i)
the business of the Company has been conducted in the ordinary course and (ii)
there has been no material adverse change in the assets, properties,
liabilities, business, affairs, results of operations, condition (financial or
otherwise) or prospects of the Company on a consolidated basis. As of the
Closing Date and as of the date hereof, there are no material liabilities of the
Company which would be required to be provided for in a consolidated balance
sheet of the Company as of either such date prepared in accordance with
generally accepted accounting principles consistently applied, other than
liabilities provided for in the financial statements referred to in Section
4.6(a). Since September 30, 1998, no amount or property has directly or
indirectly been declared, ordered, paid, made or set aside for any Restricted
Payment nor has any such action been agreed to.

     (c) There are no material liabilities, contingent or otherwise, of the
Company that have not been disclosed in the financial statements referred to in
Section 4.6(a) or otherwise disclosed in the Disclosure Material.

     (d) None of the Disclosure Material contained or contains a false or
misleading statement of a material fact or omits to state any material fact
necessary in order to make the statements made in such Disclosure Material, in
light of the circumstances under which they were made, not misleading.

     (e) There is no fact known to the Company which is not in the Disclosure
Material and which materially and adversely affects, or in the future might
materially and adversely affect, the assets, properties, liabilities, business,
affairs, results of operations, condition (financial or otherwise) or prospects
of the Company on a consolidated basis.


                                      -17-
<PAGE>

     4.7. Litigation.

     Except as disclosed on Exhibit B hereto, there is no action, suit,
proceeding, investigation or claim pending or, to the knowledge of the Company,
threatened in law, equity or otherwise before any court, Governmental Authority
or arbitrator which (i) questions the validity of the Stock Purchase Agreements,
the Certificate of Amendment, the Stockholders' Agreement, the Registration
Rights Agreement, the Shares or the Conversion Shares or any action taken or to
be taken pursuant hereto or thereto, (ii) might adversely affect the right,
title or interest of any Purchaser to the Shares or the Conversion Shares or
(iii) might result in a material adverse change in the assets, properties,
liabilities, business, affairs, results of operations, condition (financial or
otherwise) or prospects of the Company on a consolidated basis.

     4.8. Taxes.

     The Company has duly and timely filed all Tax Returns required to be filed
by it, and each such Tax Return correctly and completely reflects the Tax
liability and all other information required to be reported thereon. The Company
has paid or caused to be paid all Taxes (whether or not reflected on such Tax
Returns) that are due and payable. The provision for Taxes due by the Company in
the most recent financial statement included in the Disclosure Material is
sufficient for all unpaid Taxes, being current Taxes not yet due and payable, of
the Company, as of the end of the period covered by such financial statement,
and as of the Closing Date, such provision, as adjusted for the passage of time
through the Closing Date, will be sufficient for the then-accrued and unpaid
Taxes not yet due and payable of the Company. There is no dispute concerning any
Tax liability of the Company either threatened, claimed or raised by any Taxing
Authority, and the Company does not expect any Taxing Authority to assess
additional Taxes against or in respect of it for any past period. The Company
has withheld and paid, or, if not yet due for payment, set aside in accounts for
such purposes, all Taxes required to have been withheld in connection with
amounts paid or owing to any employee, creditor, independent contractor or other
third party. The Company has no liability for Taxes of any Person other than the
Company as a transferee or successor, by contract or otherwise. There are no
applicable Taxes payable by the Company in connection with the execution and
delivery of the Stock Purchase Agreements, the Stockholders' Agreement or the
Registration Rights Agreement or the issuance by the Company of the Shares or
the Conversion Shares.

     4.9. ERISA.

     (a) All Benefit Plans are listed in Exhibit B, and copies of all
documentation relating to such Benefit Plans have been delivered or made
available to the Purchasers (including copies of written Benefit Plans, written
descriptions of oral Benefit Plans, summary plan descriptions, trust agreements,
the three most recent annual returns, employee communications, and IRS
determination letters).


                                      -18-
<PAGE>

     (b) Each Benefit Plan has at all times been maintained and administered in
all material respects in accordance with its terms and with the requirements of
all applicable law, including ERISA and the Code, and each Benefit Plan intended
to qualify under Section 401(a) of the Code has at all times since its adoption
been so qualified, and each trust which forms a part of any such plan has at all
times since its adoption been tax-exempt under Section 501(a) of the Code.

     (c) No Benefit Plan has incurred any "accumulated funding deficiency"
within the meaning of Section 302 of ERISA or Section 412 of the Code, and the
"amount of unfunded benefit liabilities" within the meaning of Section
4001(a)(18) of ERISA does not exceed zero with respect to any Benefit Plan
subject to Title IV of ERISA.

     (d) No "reportable event" (within the meaning of Section 4043 of ERISA) has
occurred with respect to any Benefit Plan or any Plan maintained by an ERISA
Affiliate since the effective date of said Section 4043.

     (e) No Benefit Plan is a multiemployer plan within the meaning of Section
3(37) of ERISA.

     (f) No direct, contingent or secondary liability has been incurred or is
expected to be incurred by the Company under Title IV of ERISA to any party with
respect to any Benefit Plan, or with respect to any other Plan presently or
heretofore maintained or contributed to by any ERISA Affiliate.

     (g) Neither the Company nor any ERISA Affiliate has incurred any liability
for any tax imposed under Section 4971 through 4980B of the Code or civil
liability under Section 502(i) or (l) of ERISA.

     (h) No benefit under any Benefit Plan, including, without limitation, any
severance or parachute payment plan or agreement, will be established or become
accelerated, vested or payable by reason of any transaction contemplated under
this Agreement.

     (i) No Benefit Plan provides health or death benefit coverage beyond the
termination of an employee's employment, except as required by Part 6 of
Subtitle B of Title I of ERISA or Section 4980B of the Code or any State laws
requiring continuation of benefits coverage following termination of employment.

     (j) No suit, action or other litigation (excluding claims for benefits
incurred in the ordinary course of plan activities) has been brought or, to the
knowledge of the Company, threatened against or with respect to any Benefit Plan
and there are no facts or circumstances known to the Company that could
reasonably be expected to give rise to any such suit, action or other
litigation.


                                      -19-
<PAGE>

     (k) All contributions to Benefit Plans that were required to be made under
such Benefit Plans have been made, and all benefits accrued under any unfunded
Benefit Plan have been paid, accrued or otherwise adequately reserved in
accordance with generally accepted accounting principles, all of which accruals
under unfunded Benefit Plans are as disclosed in Exhibit B, and the Company has
performed all material obligations required to be performed under all Benefit
Plans.

     (l) The execution, delivery and performance of the Stock Purchase
Agreements, the Stockholders' Agreement and the Registration Rights Agreement
and the consummation of the transactions contemplated hereby and thereby
(including, without limitation, the offer, issuance and sale by the Company, and
the purchase by the Purchaser of the Shares and the Conversion Shares) will not
involve any "prohibited transaction" within the meaning of ERISA or the Code.

     4.10. Legal Compliance.

     (a) The Company has complied with all applicable laws, rules, regulations,
orders, licenses, judgments, writs, injunctions, decrees or demands, except to
the extent that failure to so comply would not materially adversely affect the
assets, properties, liabilities, business, affairs, results of operations,
condition (financial or otherwise) or prospects of the Company on a consolidated
basis.

     (b) There are no material adverse orders, judgments, writs, injunctions or
decrees of any court or administrative body, domestic or foreign, or of any
other Governmental Authority, domestic or foreign, outstanding against the
Company.

     4.11. Outstanding Securities.

     All securities (as defined in the Securities Act) of the Company have been
offered, issued, sold and delivered in compliance with, or pursuant to
exemptions from, all applicable federal and state laws, and the rules and
regulations of federal and state regulatory bodies governing the offering,
issuance, sale and delivery of securities.

     4.12. Permits, Licenses and Approvals; Intellectual Property and Other
Rights.

     Except as listed on Schedule 4.12, the Company owns or possesses and holds
free from burdensome restrictions or material conflicts with the rights of
others all franchises, licenses, permits, consents, approvals and other
authority (governmental or otherwise), patents, patent rights, trademarks,
trademark rights, trade names, trade name rights and copyrights (each of which
is listed on Exhibit B hereto), and all rights and privileges with respect to
any of the foregoing, as are necessary for the conduct of its business as now
being conducted and as proposed to be conducted. To the best of the Company's
knowledge, the Company is not in default in any material respect under any of
such franchises, licenses, permits, consents, 


                                      -20-
<PAGE>

approvals or other authority. The rights of (and use by) the Company with
respect to such or any other patents, patent rights, trademarks, trademark
rights, trade names, trade name rights or copyrights do not conflict with or
infringe any rights of others in a manner which might materially and adversely
affect the assets, properties, liabilities, business, affairs, results of
operations, condition (financial or otherwise) or prospects of the Company on a
consolidated basis, and no such claim of conflict or infringement has been
asserted by any Person.

     4.13. Key Employees.

     The Company has good relationships with its employees and has not had and
does not expect any substantial labor problems. The Company has no knowledge as
to any intentions of any key employee or any group of employees to leave the
employ of the Company. Except as set forth on Exhibit B hereto, the employees of
the Company are not and have never been represented by any labor union, and no
collective bargaining agreement is binding and in force against the Company or
currently being negotiated by the Company.

     4.14. Properties.

     The Company has good and marketable title to its real property, all of
which is disclosed on Exhibit B hereto, and good and marketable title to each of
its other properties. Certain real property used by the Company in the conduct
of its business is held under lease (as identified on Exhibit B hereto), and the
Company is not aware of any pending or threatened claim or action by any lessor
of any such property to terminate any such lease. All such leases are valid and
in full force and effect, and none of such leases is in default. Except as
disclosed on Schedule 5, none of the properties owned or leased by the Company
is subject to any Liens which could materially and adversely affect the assets,
properties, liabilities, business, affairs, results of operations, condition
(financial or otherwise) or prospects of the Company on a consolidated basis.

     4.15. Suppliers and Customers.

     (a) The Company has no reason to believe that it does not have adequate
sources of supply for its business as currently conducted and as proposed to be
conducted. The Company has good relationships with all of its material sources
of supply of goods and services and does not anticipate any material problem
with any such material sources of supply.

     (b) The Company has no knowledge that the customer base of the Company
might materially decrease.


                                      -21-
<PAGE>

     4.16. Environmental Compliance.

     Except as disclosed on Schedule 4.16 hereto:

     (a) the Company has not received any verbal or written notice, citation,
subpoena, summons, complaint or other correspondence or communication from any
person with respect to the presence of any Hazardous Material at, on, about,
under, emanating to or from or affecting any of the real property (including
improvements) currently or formerly owned, leased, operated or occupied by the
Company or any predecessors thereof;

     (b) there has been no intentional or unintentional, gradual or sudden,
release, disposal or discharge upon, into, beneath or from the real property
(including improvements) currently or formerly owned, leased, operated or
occupied by the Company or any predecessors thereof that has caused or is
causing soil or groundwater contamination which under applicable Environmental
Laws could require investigation or remediation or could otherwise create a
material liability or obligation on the part of the Company; 

     (c) the Company is in material compliance with all applicable Environmental
Laws and the terms and conditions of all Environmental Permits;

     (d) to the best knowledge of the Company after reasonable inquiry, there
are no Liens arising under or pursuant to any Environmental Law ("Environmental
Liens") relating to any real property (including improvements thereon) currently
owned by the Company;

     (e) there are no (i) underground storage tanks, (ii) polychlorinated
biphenyl containing equipment or (iii) asbestos-containing materials at any site
currently owned, leased, operated or occupied by the Company;

     (f) the Company has not transported or arranged for the treatment, storage,
handling, disposal or transportation of any Hazardous Material to any location
which could reasonably be expected to result in material liability to the
Company; and

     (g) no real property currently or previously owned, leased, operated or
occupied by the Company or any predecessors thereof is currently listed, or to
the knowledge of the Company, proposed to be listed on the National Priorities
List, the Comprehensive Environmental Response, Compensation and Liability
Information System or on any similar state list of sites requiring investigation
or cleanup.

     4.17. No Burdensome Agreements.

     To the best of the knowledge of the Company, (i) the Company is not a party
to, or bound by (nor are any of its properties affected by), any commitment,
contract or agreement, any term of which materially adversely affects, or in the
future would reasonably be expected to 


                                      -22-
<PAGE>

materially adversely affect, the assets, properties, business, affairs, results
of operations, condition (financial or otherwise) or prospects of the Company on
a consolidated basis and (ii) the Company is not a party to any contract or
agreement with any Affiliate of the Company, the terms of which are less
favorable to the Company than those which might have been obtained, at the time
such contract or agreement was entered into, from a person who was not such an
Affiliate.

     4.18. Offering of Shares.

     Neither the Company nor, to the Company's knowledge, any agent or other
Person acting on its behalf, directly or indirectly, (i) offered any of the
Shares or any similar security of the Company (A) by any form of general
solicitation or general advertising (within the meaning of Regulation D under
the Securities Act) or (B) for sale to or solicited offers to buy any thereof
from, or otherwise approached or negotiated with respect thereto with, any
person other than the Purchasers and not more than fifty (50) other
institutional investors each of which the Company reasonably believed was an
"accredited investor" within the meaning of Regulation D under the Securities
Act or (ii) has done or caused to be done (or has omitted to do or to cause to
be done) any act which act (or which omission) would result in bringing the
issuance or sale of the Shares within the provisions of Section 5 of the
Securities Act or the filing, notification or reporting provisions of any state
securities laws.

     4.19. SEC Reports.

     The Company has filed all proxy statements, reports and other documents
required to be filed by it under the Securities Exchange Act. The Company has
furnished the Purchaser with copies of (i) its Annual Report on Form 10-K for
the fiscal year ended December 31, 1997, (ii) its Quarterly Reports on Form 10-Q
for the fiscal quarters ended March 31, 1998, June 30, 1998 and September 30,
1998 and (iii) its Proxy Statement dated February 16, 1999 (collectively, the
"SEC Reports"). Each SEC Report was in substantial compliance with the
requirements of its respective form and none of the SEC Reports, nor the
financial statements (and the notes thereto) included in the SEC Reports, as of
their respective dates, contained any untrue statement of a material fact or
omitted to state a material fact necessary to make the statements therein, in
light of the circumstances under which they were made, not misleading.

     4.20. Indebtedness.

     Schedule 2 hereto sets forth (i) the amount of all Indebtedness of the
Company outstanding on such Closing Date, which, individually, exceeds $50,000,
(ii) any Lien with respect to such Indebtedness and (iii) a description of each
instrument or agreement governing such Indebtedness. The Company has made
available to the Purchaser a complete and correct copy of each such instrument
or agreement (including all amendments, supplements or modifications thereto).
No material default exists with respect to or under any such Indebtedness 


                                      -23-
<PAGE>

or any material instrument or agreement relating thereto and no event or
circumstance exists with respect thereto that (with notice or the lapse of time
or both) could give rise to such a default.

     4.21. Use of Proceeds.

     The Company will use the proceeds realized from the sale of the Shares to
fund the roll-out of the Depot Strategy program, fees and expenses of the
transactions contemplated hereby and for working capital purposes. No portion of
such proceeds will be used for the purpose, whether immediate, incidental or
ultimate, of purchasing or carrying, within the meaning of Regulation U of the
Board of Governors of the Federal Reserve System, as amended from time to time,
any "margin stock" as defined in said Regulation U, or for the purpose of
purchasing, carrying or trading in securities within the meaning of Regulation T
of the Board of Governors of the Federal Reserve System, as amended from time to
time, or for the purpose of reducing or retiring any indebtedness which both (i)
was originally incurred to purchase any such margin stock or other securities
and (ii) was directly or indirectly secured by such margin stock or other
securities. None of the assets of the Company includes any such "margin stock."
The Company has no present intention of acquiring any such "margin stock."

     4.22. Other Names.

     The business previously or presently conducted by the Company has not been
conducted under any corporate, trade or fictitious name, other than those names
listed on Exhibit B hereto.

     4.23. Brokers.

     Except as disclosed on Exhibit B hereto, no broker, finder or investment
banker or other party is entitled to any brokerage, finder's or other similar
fee or commission in connection with any Stock Purchase Agreement, the
Stockholders' Agreement, the Registration Rights Agreement or the Certificate of
Amendment or any of the transactions contemplated hereby or thereby, based upon
arrangements made by or on behalf of the Company or any of its Affiliates.


SECTION 5. REPRESENTATIONS AND WARRANTIES OF THE PURCHASER

     The Purchaser represents and warrants to the Company as follows:

     5.1. Corporate Power and Authority.

     The Purchaser has all requisite power, authority and legal right to
execute, deliver, enter into, consummate the transactions contemplated by and
perform its obligations under this Agreement, the Stockholders' Agreement and
the Registration Rights Agreement. The execution, delivery and performance of
this Agreement, the Stockholders' Agreement and the 


                                      -24-
<PAGE>

Registration Rights Agreement by the Purchaser have been duly authorized by all
required corporate and other actions. The Purchaser has duly executed and
delivered this Agreement, the Stockholders' Agreement and the Registration
Rights Agreement, and this Agreement, the Stockholders' Agreement and the
Registration Rights Agreement constitute the legal, valid and binding
obligations of the Purchaser enforceable against the Purchaser in accordance
with their respective terms, subject to bankruptcy, insolvency, reorganization,
moratorium and other similar laws relating to the rights of creditors generally.

     5.2. Investment Intent.

     The Purchaser is capable of evaluating the risk of its investment in the
Shares being purchased by it and is able to bear the economic risk of such
investment. The Purchaser is purchasing the Shares to be purchased by it for its
own account for investment and not with a present view to any distribution
thereof in violation of applicable securities laws; provided, however, that,
upon notice to the Company, the Purchaser may transfer record and/or beneficial
ownership of the Shares or the Conversion Shares to one or more Affiliates,
officers or employees of Affiliates or investment funds managed by Affiliates of
the Purchaser, in all cases in compliance with federal securities laws. It is
understood that the disposition of the Purchaser's Shares or Conversion Shares
shall at all times be within the Purchaser's control. If the Purchaser should in
the future decide to dispose of any of its Shares or Conversion Shares, it is
understood that it may do so only in compliance with the Securities Act,
applicable securities laws, this Agreement and the right of first offer set
forth in Section 5 of the Stockholders' Agreement. The Purchaser is an
"accredited investor" as defined in Rule 501(a) under the Securities Act.

     5.3. Brokers.

     Except as disclosed on Exhibit B hereto, no broker, finder or investment
banker or other party is entitled to any brokerage, finder's or other similar
fee or commission in connection with any Stock Purchase Agreement, the
Stockholders' Agreement, the Registration Rights Agreement or the Certificate of
Amendment or any of the transactions contemplated hereby or thereby, based upon
arrangements made by or on behalf of the Purchaser or any of its Affiliates.

     5.4. Ownership of Common Stock.

     The Purchaser currently does not own any shares of Common Stock and will
not acquire any additional shares of Common Stock in the public market. Any
future ownership by the Purchaser of shares of Common Stock shall be subject to
the limitations set forth in Section 4(a) of the Certificate of Amendment.


                                      -25-
<PAGE>

SECTION 6. RESTRICTIONS ON TRANSFER

     The Purchaser agrees that it will not sell or otherwise dispose of any
Shares or Conversion Shares unless such Shares or Conversion Shares have been
registered under the Securities Act and, to the extent required, under any
applicable state securities laws, or pursuant to an applicable exemption from
such registration requirements. The Company may endorse on all Share
certificates a legend stating or referring to such transfer restrictions and may
place a stop order with the Company's transfer agent for the Shares.


SECTION 7. INFORMATION AS TO THE COMPANY

     The Company covenants and agrees as follows:

     7.1. Financial Information.

     (a) The Company will maintain a system of accounting established and
administered in accordance with sound business practices to permit preparation
of financial statements in accordance with generally accepted accounting
principles consistently applied.

     (b) So long as any of the Shares remain outstanding, the Company will
deliver to (x) each holder of thirty percent (30%) or more of the Shares and
Conversion Shares and (y) a Designated Entity, the following:

          (i) as soon as practicable but not later than five (5) Business Days
     after their issuance, and in any event within ninety-five (95) days after
     the close of each fiscal year of the Company, (A) a consolidated balance
     sheet of the Company as of the end of such fiscal year and (B) consolidated
     statements of operations, stockholders' equity and cash flows of the
     Company for such fiscal year, in each case for statements set forth in
     clause (B) setting forth in comparative form the corresponding figures for
     the preceding fiscal year, all such balance sheets and statements to be in
     reasonable detail and certified without qualification by BDO Seidman, LLP
     or any "Big Five" independent public accounting firm selected by the Audit
     Committee of the Board of Directors of the Company and approved by the
     shareholders of the Company, and such statements shall be accompanied by a
     management analysis of any material differences between the results for
     such fiscal year and the corresponding figures for the preceding year;

          (ii) as soon as practicable, copies (A) of all financial statements,
     proxy material or reports sent to the Company's stockholders, (B) of any
     public press releases and (C) of all reports or registration statements
     filed with the Commission pursuant to the Securities Act or the Securities
     Exchange Act;


                                      -26-
<PAGE>

          (iii) as soon as practicable and in any event within fifty (50) days
     after the close of each of the first three (3) fiscal quarters of the
     Company, (A) a consolidated balance sheet of the Company as of the end of
     such fiscal quarter, (B) consolidated statements of operations,
     stockholders' equity and cash flows of the Company for the portion of the
     fiscal year ended with the end of such quarter, in each case in reasonable
     detail, certified by the Chief Financial Officer, Chief Executive Officer
     or President of the Company and setting forth in comparative form the
     corresponding figures for the comparable period one year prior thereto
     (subject to normal year-end adjustments), together with a management
     analysis of any material differences between such results and the
     corresponding figures for such prior period and (C) a certificate of the
     Chief Financial Officer, Chief Executive Officer or President of the
     Company certifying the Company's compliance with the covenants contained in
     Section 9 (other than Section 9.12) of this Agreement;

          (iv) as soon as practicable and without duplication of any of the
     above items, any other materials furnished to the Company's Board of
     Directors or to holders of the Company's capital stock or Indebtedness,
     including, without limitation, any compliance certificates furnished in
     respect of such Indebtedness; and

          (v) as soon as practicable, such other information as may reasonably
     be requested by a holder of Shares.

     (c) The Company will deliver to each member of the Company's Board of
Directors and each observer to the Company's Board of Directors appointed
pursuant to Section 2(a) of the Stockholders' Agreement, as soon as practicable
(and in the case of (iii), prior to the end of each fiscal year) and without
duplication of any of the items listed below, the following:

          (i) copies of any annual, special or interim audit reports or
     management or comment letters with respect to the Company or its operations
     submitted to the Company by independent public accountants;

          (ii) copies of summary financial information prepared on a quarterly
     basis regarding the Company on a consolidated basis as presented to the
     Company's Board of Directors and any other summary financial information
     otherwise prepared;

          (iii) copies of the annual budget and business plan for the next
     fiscal year;

          (iv) copies of all formal communications, from time to time, to
     directors of the Company (including without limitation all information
     furnished to such directors in connection with such communications), and
     copies of minutes of meetings of the Company's Board of Directors (and of
     any executive committees thereof);

                                      -27-
<PAGE>

          (v) notice of default under any material agreement, contract or other
     instrument to which the Company is a party or by which it is bound; 

          (vi) notice of any action or proceeding which has been commenced or
     threatened against the Company and which, if adversely determined, would
     have, individually or in the aggregate, a material adverse effect on the
     assets, properties, liabilities, business, affairs, results of operations,
     condition (financial or otherwise) or prospects of the Company on a
     consolidated basis; and

          (vii) copies of all filings made with the Commission.

     (d) All such financial statements referred to in this Section 7.1 shall be
prepared in accordance with generally accepted accounting principles
consistently applied (except for any change in accounting principles specified
in the accompanying certificate and except that any interim financial statements
may omit notes and may be subject to normal year-end adjustments).

     (e) Without limiting the foregoing provisions of this Section 7.1, the
Company agrees that, if requested in writing by any holder of Shares, it will
not deliver to such holder (until otherwise instructed by a holder of thirty
percent (30%) or more of the Shares) (x) any non-public information or
non-public materials regarding the Company (whether described in this Section
7.1 or otherwise) and (y) any information (whether or not included in clause
(x)) which such holder specifies that it does not want to receive. The Company
shall comply with any such request with respect to each such Purchaser and any
subsequent holders of Shares acquired directly or indirectly (through one or
more transfers) from such Purchaser, until instructed otherwise by the then
holder of such Shares.

     7.2. Communication with Accountants.

     The Company hereby authorizes (a) each holder of thirty percent (30%) or
more of the Shares and Conversion Shares, and (b) a Designated Entity, to
communicate directly with the independent certified public accountants for the
Company and authorizes such accountants to disclose to each such holder any and
all financial statements and any other information of any kind that they may
have with respect to the assets, properties, liabilities, business, affairs,
results of operations, condition (financial or otherwise) or prospects of the
Company, provided, that each such holder has delivered to the Company a
confidentiality agreement in form and substance reasonably acceptable to the
Company. The Company shall deliver a letter addressed to such accountants
instructing them to comply with the provisions of this Section 7.2. For purposes
of Section 7.2(a), the calculation of a Person's percentage holdings of
Conversion Shares shall be determined based upon the number of Shares from which
such Conversion Shares derived.


                                      -28-
<PAGE>

     7.3. Inspection.

     The Company will permit (a) each holder of thirty percent (30%) or more of
the Shares and Conversion Shares, (b) any authorized representative of a holder
referred to in clause (a) and (c) a Designated Entity to visit and inspect any
of the properties of the Company, to examine the Company's books and records and
to discuss with the Company's officers the Company's books and records and the
assets, properties, liabilities, business, affairs, results of operations,
condition (financial or otherwise) or prospects of the Company, all at such
reasonable times and as often as may be reasonably requested, provided, that
each such holder, representative or Designated Entity has delivered to the
Company a confidentiality agreement in form and substance reasonably acceptable
to the Company. For purposes of Section 7.3(a), the calculation of a Person's
percentage holdings of Conversion Shares shall be determined based upon the
number of Shares from which such Conversion Shares derived.

     7.4. Notices.

     The Company will give notice to all holders of Shares promptly after it
learns (other than by notice from all of such holders) of the existence of any
of the following:

     (a) any default under any Indebtedness (or under any indenture, mortgage or
other agreement relating to any Indebtedness) which Indebtedness is in an
aggregate principal amount exceeding $100,000 (or the equivalent thereof in
other currencies) in respect of which the Company is liable;

     (b) any action or proceeding which has been commenced or threatened against
the Company and which, if adversely determined, would have, individually or in
the aggregate, a material adverse effect on the assets, properties, liabilities,
business, affairs, results of operations, condition (financial or otherwise) or
prospects of the Company on a consolidated basis or the ability of the Company
to perform its obligations under the Stock Purchase Agreements, the
Stockholders' Agreement, the Registration Rights Agreement or the Certificate of
Amendment;

     (c) any dispute which may exist between the Company and any Governmental
Authority which may, individually or in the aggregate, materially adversely
affect the normal business operations of the Company or the assets, properties,
liabilities, business, affairs, results of operations, condition (financial or
otherwise) or prospects of the Company on a consolidated basis or the ability of
the Company to perform its obligations under the Stock Purchase Agreements, the
Stockholders' Agreement, the Registration Rights Agreement or the Certificate of
Amendment; and

     (d) if any (i) "reportable event" (as such term is described in Section
4043(c) of ERISA) has occurred; or (ii) "accumulated funding deficiency" (within
the meaning of Section 412(a) of the Code) has been incurred with respect to a
Pension Plan maintained or contributed to (or required to be maintained or
contributed to) by the Company or any ERISA 


                                      -29-
<PAGE>

Affiliate that is subject to the funding requirements of ERISA and the Code or
an application may be or has been made to the Secretary of the Treasury for a
waiver or modification of the minimum funding standard (including any required
installment payments) or an extension of any amortization period under Section
412 of the Code, in each case with respect to such a Pension Plan; or (iii)
Pension Plan maintained or contributed to (or required to be maintained or
contributed to) by the Company or any ERISA Affiliate has been terminated,
reorganized, petitioned or declared insolvent under Title IV of ERISA; or (iv)
Pension Plan maintained or contributed to (or required to be maintained or
contributed to) by the Company or any ERISA Affiliate has an unfunded current
liability giving rise to a lien under ERISA or the Code; or (v) proceeding has
been instituted pursuant to Section 515 of ERISA to collect a delinquent
contribution to a Pension Plan maintained or contributed to (or required to be
maintained or contributed to) by the Company or any ERISA Affiliate; or (vi) of
the Company or its ERISA Affiliates will or may incur any liability (including
any contingent or secondary liability) to or on account of the termination or
withdrawal from a Pension Plan maintained or contributed to (or required to be
maintained or contributed to) by the Company or any ERISA Affiliate; or (vii)
"prohibited transaction" (as such term is defined in Section 406 of ERISA or
Section 4975 of the Code) in connection with an "employee benefit plan" (as
defined in Section 3(3) of ERISA), maintained or contributed to (or required to
be maintained or contributed to) by the Company or any ERISA Affiliate has
occurred.

Such notice (i) with respect to (a), shall specify the nature and period of
existence of any such default and what the Company proposes to do with respect
thereto and (ii) with respect to (b), (c) or (d), shall specify the nature of
any such matter referred to in such clause, what action the Company proposes to
take with respect thereto and what action any other relevant Person is taking or
proposes to take with respect thereto.


SECTION 8. AFFIRMATIVE COVENANTS

     The Company covenants and agrees as follows:

     8.1. Maintenance of Existence, Properties and Franchises; Compliance with
          Law; Taxes; Insurance.

     The Company will:

     (a) maintain its corporate existence, rights and other franchises in full
force and effect;

     (b) maintain its tangible assets in good repair, working order and
condition so far as necessary or advantageous to the proper carrying on of its
business;


                                      -30-
<PAGE>

     (c) comply with all applicable laws and with all applicable orders, rules,
rulings, certificates, licenses, regulations, demands, judgments, writs,
injunctions and decrees, provided, that such compliance shall not be necessary
so long as (i) the applicability or validity of any such law, order, rule,
ruling, certificate, license, regulation, demand, judgment, writ, injunction or
decree shall be contested in good faith by appropriate proceedings and (ii)
failure to so comply will not have a material adverse effect on the assets,
properties, liabilities, business, affairs, results of operations, condition
(financial or otherwise) or prospects of the Company on a consolidated basis;

     (d) pay promptly when due all Taxes imposed upon its properties, assets or
income and all claims or indebtedness (including, without limitation, vendor's,
workmen's and like claims) which might become a Lien upon such properties or
assets; provided, that payment of any such Tax shall not be necessary so long as
(i) the applicability or validity thereof shall be contested in good faith by
appropriate proceedings and a reserve, if appropriate, shall have been
established with respect thereto and (ii) failure to make such payment will not
have a material adverse effect on the assets, properties, liabilities, business,
affairs, results of operations, condition (financial or otherwise) or prospects
of the Company on a consolidated basis; and

     (e) keep adequately insured, by financially sound and reputable insurers of
nationally recognized stature, all its properties of a character customarily
insured by entities similarly situated, against loss or damage of the kinds and
in amounts customarily insured against by such entities and with such
deductibles or coinsurance as is customary.

     8.2. Office for Payment, Exchange and Registration; Location of Office;
          Notice of Change of Name or Office.

     (a) So long as any of the Shares is outstanding, the Company will maintain
an office or agency where Shares may be presented for redemption, exchange,
conversion or registration of transfer as provided in this Agreement. Such
office or agency initially shall be the office of the Company specified in
Section 17 hereof, subject to Section 8.2(b).

     (b) The Company shall give each holder of Shares at least twenty (20) days'
prior written notice of any change in (i) the name of the Company as then in
effect or (ii) the location of the office of the Company required to be
maintained under this Section 8.2.

     8.3. Fiscal Year.

     The fiscal year of the Company for tax, accounting and any other purposes
shall end on December 31 of each calendar year.


                                      -31-
<PAGE>

     8.4. Environmental Matters.

     (a) The Company shall keep and maintain any property either owned, leased,
operated or occupied by the Company free and clear of any Environmental Liens,
and the Company shall keep all such property free of Hazardous Material
contamination and in compliance with all applicable Environmental Laws and the
terms and conditions of any Environmental Permits; provided, however, that the
Company shall have the right at its cost and expense, and acting in good faith,
to contest, object or appeal by appropriate legal proceedings the validity of
any Environmental Lien. The contest, objection or appeal with respect to the
validity of an Environmental Lien shall suspend the Company's obligation to
eliminate such Environmental Lien under this paragraph pending a final
determination by appropriate administrative or judicial authority of the
legality, enforceability or status of such Environmental Lien, provided that the
following conditions are satisfied: (i) contemporaneously with the commencement
of such proceedings, the Company shall give written notice thereof to each
holder of Shares or Conversion Shares; and (ii) if under applicable law any real
property or improvements thereon are subject to sale or forfeiture for failure
to satisfy the Environmental Lien prior to a final determination of the legal
proceedings, the Company must successfully move to stay such sale, forfeiture or
foreclosure pending final determination of the Company's action; and (iii) the
Company must, if requested, furnish to the holders of Shares or Conversion
Shares a good and sufficient bond, surety, letter of credit or other security
satisfactory to such holders equal to the amount (including any interest and
penalty) secured by the Environmental Lien.

     (b) The Company will, by administrative or judicial process, enforce the
obligations of any other Person who is potentially liable for damages,
contribution or other relief in connection with any violation of Environmental
Laws, including, but not limited to, asbestos abatement, Hazardous Material
remediation or off-site or on-site disposal.

     (c) The Company will defend, indemnify and hold harmless each current,
former and future holder of Shares or Conversion Shares, and each such holder's
employees, officers, directors, stockholders, partners, agents, representatives
and assigns, from and against any liabilities, obligations, losses, damages,
penalties, actions, judgments, suits and claims, joint or several, and any
costs, disbursements and expenses (including attorneys' fees and expenses and
costs of investigation) of whatever kind or nature, known or unknown, contingent
or otherwise, arising out of or in any way related to (i) the presence,
disposal, release, removal, discharge, storage or transportation of any
Hazardous Material upon, into, from or affecting any real property (including
improvements) currently or formerly owned, leased, operated or occupied by the
Company; (ii) any judicial or administrative action, suit or proceeding, actual
or threatened, relating to Hazardous Material upon, in, from or affecting any
real property (including improvements) currently or formerly owned, leased,
operated or occupied by the Company; (iii) any violation of any Environmental
Law by the Company or any of its agents, tenants, subtenants or invitees; (iv)
the imposition of any Environmental Lien for the recovery of costs expended in
the investigation, study or remediation of any environmental liability of (or


                                      -32-
<PAGE>

asserted against) the Company; and (v) any liability arising out of or related
to the off-site transportation, shipment, disposal, treatment, handling or
disposal of Hazardous Materials. This Section 8.4(c) and Section 8.4(d) shall
survive any payment, conversion or transfer of Shares and any termination of
this Agreement.

     (d) To the extent that the Company is strictly liable without regard to
fault under any Environmental Law, the Company's obligations to the holders of
Shares or Conversion Shares under any of the indemnification provisions of the
Stock Purchase Agreements shall likewise be strict without regard to fault with
respect to the violation of any Environmental Law which results in any liability
to any of the indemnified persons referred to in Section 8.4(c).

     8.5. Reservation of Shares.

     There have been reserved, and the Company shall at all times keep reserved,
free from preemptive rights, out of its authorized Common Stock a number of
shares of Common Stock sufficient to provide for the exercise of the conversion
rights provided in Section 5 of the Certificate of Amendment.

     8.6. Securities Exchange Act Registration.

     (a) The Company will maintain effective a registration statement
(containing such information and documents as the Commission shall specify and
otherwise complying with the Securities Exchange Act), under Section 12(b) or
Section 12(g), whichever is applicable, of the Securities Exchange Act, with
respect to the Common Stock of the Company, and the Company will file on time
such information, documents and reports as the Commission may require or
prescribe for companies whose stock has been registered pursuant to such Section
12(b) or Section 12(g), whichever is applicable.

     (b) The Company will, upon the request of any holder of Shares, make
whatever other filings with the Commission, or otherwise make generally
available to the public such financial and other information, as any such holder
may deem reasonably necessary or desirable in order to enable such holder to be
permitted to sell Shares pursuant to the provisions of Rule 144.

     8.7. Delivery of Information for Rule 144A Transactions.

     If a holder of Shares proposes to transfer any such Shares pursuant to Rule
144A under the Securities Act (as in effect from time to time), the Company
agrees to provide (upon the request of such holder or the prospective
transferee) to such holder and (if requested) to the prospective transferee any
financial or other information concerning the Company which is required to be
delivered by such holder to any transferee of such Shares pursuant to such Rule
144A.


                                      -33-
<PAGE>

     8.8. Senior Securities.

     The Company shall maintain the senior status of the Series A Convertible
Preferred Stock such that it shall rank senior in all respects, including the
payment on liquidation and redemption, to all other equity securities of the
Company.

     8.9. Further Assurances.

     The Company will from time to time, upon the request of the Fleming
Holders, promptly and duly execute and deliver any and all such further
instruments and documents as the Fleming Holders may reasonably deem necessary
or desirable to obtain the full benefits of (i) the obligations of the Company
under this Agreement and (ii) the other rights and powers herein granted. Upon
the instructions from time to time of the Fleming Holders, the Company shall
execute and cause to be filed any document or filing presented to the Company in
proper form for signing or filing, in each case as the Fleming Holders may
reasonably deem necessary or desirable in light of the Company's obligations
under this Agreement, and the Company shall pay or cause to be paid any filing
or other fees in connection therewith.

     8.10. Stockholder Approval.

     The transactions contemplated hereby have been structured by the parties to
comply with the requirements for stockholder approval of the NASDAQ Stock Market
and so that further stockholder action shall not be required. If such rules
require such stockholder approval, the Company shall use its best efforts to
obtain such stockholder approval. In the event the Company fails to obtain such
stockholder approval, the terms of the transactions contemplated hereby shall be
restructured so that they (i) satisfy the requirements of the NASDAQ Stock
Market and (ii) provide the holders of Series A Preferred Stock with the same
economic benefit they would have received had such stockholder approval been
obtained.

     8.11. Shares Paid as Dividends.

     If the Company shall pay to the holders of Series A Preferred Stock
additional shares of Series A Preferred Stock as a dividend pursuant to Section
2 of the Certificate of Amendment, such additional shares, on the date of such
payment, will be duly authorized, validly issued, fully paid and non-assessable.


SECTION 9. NEGATIVE COVENANTS

     The Company covenants and agrees that without the prior written consent of
the Fleming Holders:


                                      -34-
<PAGE>

     9.1. No Dilution or Impairment; No Changes in Capital Stock.

     The Company will not, by amendment of its certificate of incorporation or
through any consolidation, merger, reorganization, transfer of assets,
dissolution, issue or sale of securities or any other voluntary action, avoid or
seek to avoid the observance or performance of any of the terms of the Stock
Purchase Agreements, the Certificate of Amendment, the Registration Rights
Agreement or the Stockholders' Agreement. The Company will at all times in good
faith assist in the carrying out of all such terms, and in the taking of all
such action, as may be necessary or appropriate in order to protect the rights
of the holders of Shares (as such rights are set forth in the Stock Purchase
Agreements, the Certificate of Amendment, the Registration Rights Agreement and
the Stockholders' Agreement) against dilution or other impairment. Without
limiting the generality of the foregoing, the Company (a) will not issue any
shares or class or series of equity or equity-linked security, which is senior
to, or pari passu with, the Series A Convertible Preferred Stock as to dividend
payments or amounts payable in the event of liquidation or winding up of the
Company, (b) will not enter into any agreement or instrument which would
restrict or otherwise materially adversely affect the ability of the Company to
perform its obligations under the Stock Purchase Agreements, the Stockholders'
Agreement, the Registration Rights Agreement or the Certificate of Amendment,
(c) will not amend its certificate of incorporation or by-laws in any manner
which would impair or reduce the rights of the Preferred Stock, including,
without limitation, an amendment which would alter or change the powers,
privileges or preferences of the holders of the Series A Convertible Preferred
Stock (including, without limitation, changing the Certificate of Amendment
after any Shares have been called for redemption), (d) except as otherwise
provided in the Certificate of Amendment, will not redeem, repurchase or
otherwise acquire any shares of capital stock of the Company or any other rights
or options to subscribe for or purchase any capital stock of the Company or any
other securities convertible into or exchangeable for capital stock of the
Company, (e) will not permit the par value or the determined or stated value of
any shares of Common Stock receivable upon the conversion of the Shares to
exceed the amount payable therefor upon such conversion, (f) will take all such
action as may be necessary or appropriate in order that the Company may at all
times validly and legally issue duly authorized, fully paid and nonassessable
shares of the Common Stock free from all Taxes, Liens and charges with respect
to the issue thereof, upon the conversion of the Shares from time to time
outstanding, (g) will not take any action which results in any adjustment of the
current conversion price under the Certificate of Amendment if the total number
of shares of the Common Stock (or other securities) issuable after the action
upon the conversion of all of the then outstanding Shares would exceed the total
number of shares of Common Stock (or other securities) then authorized by the
Company's certificate of incorporation and available for the purpose of issuance
upon such conversion, provided, that nothing contained herein shall require the
Company to make an ultra vires issuance of Common Stock, (h) will not have any
authorized Common Stock (and will not issue any Common Stock) other than its
existing authorized Common Stock, $.01 par value per share, and (i) will not
amend its certificate of incorporation to change any terms of its Common Stock.


                                      -35-
<PAGE>

     9.2. Indebtedness.

     So long as the Fleming Holders hold at least 30% of the aggregate number of
Shares, the Company will not (i) incur Indebtedness, excluding any Indebtedness
set forth on Schedule 2 hereto, in excess of $7.5 million in aggregate principal
amount; or (ii) enter into any agreement, amendment or modification with respect
to any Indebtedness, which agreement, amendment or modification restricts or
prohibits (or was intended primarily to restrict or prohibit) the Company from
making any payments under, or otherwise performing, the Stock Purchase
Agreements.

     9.3. Consolidation, Merger and Sale.

     So long as the Fleming Holders hold at least 30% of the aggregate number of
Shares, the Company will not (and will not agree to): (a) wind up, liquidate or
dissolve its affairs; (b) sell, lease, transfer or otherwise dispose of all or
substantially all of its assets to any other Person; or (c) effect a merger or
consolidation if the Company is not the surviving corporation from such merger
or consolidation.

     9.4. No Change in Business

     The Company will not change substantially the character of its business as
conducted on the Closing Date as represented in Section 4.4 hereof and described
in the Disclosure Material.

     9.5. Restricted Payments; Investments.

     The Company will not declare or make or permit to be declared or made any
Restricted Payment or any Investment.

     9.6. Sale of Substantial Portion of Assets.

     After the Closing Date, the Company will not sell, transfer, lease or
otherwise dispose of any assets to any Person (other than assets consisting of
inventory being disposed of in the ordinary course of business and other than
assets which are, contemporaneously with such disposition (or within ninety (90)
days thereafter), being replaced with other substantially similar (or improved)
assets which are used by the Company for substantially the same purpose as the
assets being replaced) to the extent the aggregate assets so sold, transferred,
leased or disposed of:

          (x) during the twelve (12) month period ending on the date of such
     sale, transfer, lease or disposition (i) had an aggregate book value equal
     to ten percent (10%) or more of the aggregate book value of the
     consolidated total assets of the Company at the end of the most recent
     fiscal quarter preceding such sale,


                                      -36-
<PAGE>

     transfer, lease or disposition or (ii) accounted for ten percent (10%) or
     more of the consolidated revenues of the Company as shown on the
     consolidated income statement of the Company for the most recent fiscal
     quarter or the then preceding fiscal year; or

          (y) during the period from the Closing Date through such sale,
     transfer, lease or disposition (i) had an aggregate book value equal to ten
     percent (10%) or more of the aggregate book value of the consolidated total
     assets of the Company at the end of the most recent fiscal quarter
     preceding such sale, transfer, lease or disposition or (ii) accounted for
     ten percent (10%) or more of the consolidated revenues of the Company over
     the Company's fiscal periods beginning after the Closing Date and ending at
     the end of the most recent fiscal quarter as shown on the consolidated
     income statements of the Company for such periods.

     9.7. Obligations to Affiliates.

     The Company may not incur or permit to exist any of the following:

     (a) any obligation of the Company to repay money borrowed owing to (i) any
Affiliate of the Company or (ii) any other holder of shares of the capital stock
of the Company; or

     (b) any obligation, to any Person, which obligation is assumed or
guaranteed by the Company and which is an obligation of (i) any Affiliate of the
Company or (ii) any other holder of shares of the capital stock of the Company.

This Section 9.7 shall not apply to (1) any obligations under the Stock Purchase
Agreements or with respect to the Shares, (2) any loans, advances or Guarantees
referred to in clause (1) of the proviso to the definition of "Investment"
contained in Section 3 hereof, (3) Indebtedness identified on Schedule 2 hereto,
(4) the Affiliate Loan or (5) payments to DuPont Chemical and Energy Operations,
Inc. and E.I. DuPont de Nemours and Company in the ordinary course of business,
consistent with past practice, and not in connection with any financing or
extraordinary corporate transaction.

     9.8. Transactions with Affiliates.

     The Company will not, directly or indirectly, enter into any transaction or
agreement (including, without limitation, the purchase, sale, distribution,
lease or exchange of any property or the rendering of any service) with any
Affiliate of the Company, unless such transaction or agreement (a) is approved
by a majority of the Outside Directors on the Board of Directors of the Company
(provided that this Section 9.8(a) shall not apply to payments to DuPont
Chemical and Energy Operations, Inc. and E.I. DuPont de Nemours and Company in
the


                                      -37-
<PAGE>

ordinary course of business, consistent with past practice, and not in
connection with any financing or extraordinary corporate transaction), and (b)
is on terms that are no less favorable to the Company than those which might be
obtained at the time of such transaction from a Person who is not such an
Affiliate; provided, however, that this Section 9.8 shall not limit, or be
applicable to, (i) employment arrangements with (and general salary and benefits
compensation for) any individual who is a full-time employee of the Company if
such arrangements are approved by a majority of the Outside Directors on the
Board of Directors of the Company; and (ii) the payment of reasonable and
customary regular fees to directors of the Company who are not employees of the
Company.

     9.9. Liens.

     So long as the Fleming Holders hold at least 30% of the aggregate number of
Shares, the Company will not create or permit to exist any Liens upon or with
respect to any of its assets or income, other than existing liens set forth on
Schedule 5 hereto, in excess of $7.5 million in the aggregate.

     9.10. Private Placement Status.

     Neither the Company nor any agent nor other Person acting on the Company's
behalf will do or cause to be done (or will omit to do or to cause to be done)
any act which act (or which omission) would result in bringing the issuance or
sale of the Shares or the Conversion Shares within the provisions of Section 5
of the Securities Act or the filing, notification or reporting requirements of
any state securities law (other than in accordance with a registration and
qualification of Conversion Shares pursuant to the Registration Rights
Agreement).

     9.11. Maintenance of Public Market.

     The Company will not proceed with a program of acquisition of its Common
Stock, initiate a corporate reorganization or recapitalization or undertake a
consolidation or merger or authorize, consent to or take any action which would
have the effect of:

     (a) removing the Company from registration with the Commission under the
Securities Exchange Act with respect to the Company's Common Stock;

     (b) requiring the Company to make a filing under Section 13(e) of the
Securities Exchange Act;

     (c) reducing substantially or eliminating the public market for shares of
Common Stock of the Company;


                                      -38-
<PAGE>

     (d) causing a delisting of the Company's Common Stock as a National Market
Security on the NASDAQ Stock Market (unless such stock is delisted as a result
of being listed on a national securities exchange); or

     (e) if any shares of the Company's Common Stock are at any time listed on a
national exchange, causing a delisting of such stock from such exchange.

     9.12. Actions Prior to the Closing Date.

     From the date hereof through the Closing Date, the Company will not, (a)
issue or agree to issue any capital stock or any securities exercisable for, or
convertible or exchangeable into, capital stock or (b) purchase, redeem or
otherwise acquire any of its capital stock; provided, however, that this Section
9.12 shall not limit, or be applicable to, (i) the transactions contemplated by
the Stock Purchase Agreements, including any issuance of capital stock in
connection with the transactions contemplated by Sections 9.1 and 9.11 hereof,
(ii) grants of options or issuances of Common Stock to officers, directors or
employees of the Company pursuant to the current terms of the Company's 1994 and
1997 Stock Option Plans and (iii) any grants of warrants to Wm. Sword & Company
Incorporated and Allan Benton as a result of the transactions contemplated
hereby.


SECTION 10. CONDITIONS TO PURCHASER'S OBLIGATIONS

     The Purchaser's obligation to purchase Shares hereunder is subject to
satisfaction of the following conditions at the Closing (any of which may be
waived by the Purchaser):

     10.1. Certificate of Amendment; Stockholders' Agreement; Registration
Rights Agreement.

     (a) The certificate of incorporation of the Company shall have been duly
amended by the filing of the Certificate of Amendment in the form of Exhibit A
hereto.

     (b) The Company, the Purchasers and certain other stockholders of the
Company shall have entered into a Stockholders' Agreement substantially in the
form of Exhibit C hereto.

     (c) The Company shall have entered into a Registration Rights Agreement
with the Purchasers substantially in the form of Exhibit D hereto.

     10.2. Certificates for Shares.

     The Purchaser shall concurrently receive the certificates for Shares
contemplated by Section 2(b) hereof.


                                      -39-
<PAGE>

     10.3. Senior Status.

     The Company shall have taken all of the necessary actions, including the
amendment of the appropriate existing agreements, so that the Series A
Convertible Preferred Stock shall rank senior in all respects, including the
payment on liquidation and redemption, to all other equity securities of the
Company.

     10.4. Accuracy of Representations and Warranties.

     The representations and warranties of the Company contained herein or in
any certificate or document delivered pursuant hereto shall be correct and
complete on and as of the Closing Date with the same effect as though made on
and as of the Closing Date (after giving effect to the transactions contemplated
by this Agreement).

     10.5. Compliance with Agreements.

     The Company shall have performed and complied in all material respects with
all agreements, covenants and conditions contained in the Stock Purchase
Agreements and any other document contemplated hereby or thereby which are
required to be performed or complied with by the Company on or before the
Closing Date.

     10.6. Officers' Certificates.

     The Purchaser shall have received a certificate dated the Closing Date and
signed by the President or Chief Executive Officer and by the Secretary or the
Treasurer of the Company, to the effect that the conditions of Sections 10.3,
10.4, 10.8 and 10.9 have been satisfied.

     10.7. Proceedings.

     All corporate and other proceedings in connection with the transactions
contemplated by the Stock Purchase Agreements, and all documents incident
thereto, shall be in form and substance reasonably satisfactory to the Purchaser
and its counsel, and the Purchaser shall have received all such originals or
certified or other copies of such documents as the Purchaser or its counsel may
reasonably request.

     10.8. Legality; Governmental and Other Authorization.

     The purchase of and payment for the Shares shall not be prohibited by any
law or governmental order, rule, ruling, regulation, release, interpretation or
opinion applicable to the Purchaser and shall not subject the Purchaser to any
penalty, tax, liability or other onerous condition. Any necessary consents,
approvals, licenses, permits, orders and authorizations of, and any filings,
registrations or qualifications with, any Governmental Authority or other
Person,


                                      -40-
<PAGE>

with respect to the transactions contemplated by the Stock Purchase Agreements
shall have been obtained or made and shall be in full force and effect. The
Company shall have delivered to the Purchaser, upon its reasonable request
setting forth what is required, factual certificates or other evidence, in form
and substance satisfactory to the Purchaser and its counsel, to enable the
Purchaser to establish compliance with this condition.

     10.9. No Material Adverse Change.

     Except to the extent otherwise disclosed in the projected 1998 financial
statements contained in the Confidential Information Memorandum, as amended,
listed on Schedule 4, there shall have been no material adverse change in the
assets, properties, liabilities, business, affairs, results of operations,
condition (financial or otherwise) or prospects of the Company on a consolidated
basis since September 30, 1998.

     10.10. Opinion of Counsel.

     The Purchaser shall have received an opinion, dated the Closing Date and
addressed to the Purchasers, of Tenzer Greenblatt LLP, counsel for the Company,
which opinion shall be in form and substance reasonably satisfactory to the
Purchaser and its counsel and shall be in the form set forth in Exhibit E
hereto.

     10.11. Purchases of Shares.

     The sale and purchase of Shares by the Fleming Funds pursuant to the Stock
Purchase Agreements between each of the Fleming Funds and the Company shall be
consummated concurrently for an aggregate purchase price of not less than
$6,500,000.

     10.12. Consents.

     The Company shall have received all consents required pursuant to the Loan
and Security Agreement, dated April 29, 1998, between the Company and The CIT
Group/Credit Finance, Inc.

     10.13. Other Documents and Opinions.

     The Purchaser shall have received such other documents and opinions, in
form and substance reasonably satisfactory to the Purchaser and its counsel,
relating to matters incident to the transactions contemplated hereby, as the
Purchaser may reasonably request.


                                      -41-
<PAGE>

SECTION 11. BREACH OF REPRESENTATIONS, WARRANTIES AND COVENANTS

     (a) The representations, warranties, covenants and agreements of the
Company and the Purchaser contained in this Agreement, the Stockholders'
Agreement, the Registration Rights Agreement or in any document or certificate
delivered pursuant hereto or thereto or in connection herewith or therewith
shall survive, and shall continue in effect following the execution and delivery
of the Stock Purchase Agreements, the Stockholders' Agreement, the Registration
Rights Agreement, the closings hereunder and thereunder, any investigation at
any time made by the Purchaser or on its behalf or by any other Person, the
issuance, sale and delivery of the Shares, any disposition thereof and any
payment, conversion or cancellation of the Shares; provided, however, that the
representations and warranties set forth in Section 4 (other than Section
4.2(a)) and Section 5 shall survive only until the second anniversary of the
Closing Date, and the provisions of Section 9 shall terminate upon conversion of
seventy percent (70%) or more of the Shares pursuant to the Certificate of
Amendment. All statements contained in any certificate or other document
delivered by or on behalf of the Company pursuant hereto shall constitute
representations and warranties by the Company hereunder.

     (b) The Company agrees to indemnify and hold the Purchaser harmless from
and against and will pay to the Purchaser the full amount of any loss, damage,
liability or expense (including amounts paid in settlement and reasonable
attorneys' fees and expenses) to the Purchaser resulting either directly or
indirectly from any breach of the representations, warranties, covenants or
agreements of the Company contained in any Stock Purchase Agreement or in the
Stockholders' Agreement, the Registration Rights Agreement or any other document
or certificate delivered pursuant hereto or thereto or in connection herewith or
therewith; provided, however, that the Company's liability under this Section
11(b) with respect to breaches of its representations and warranties set forth
in Section 4 (other than Sections 4.2(a), 4.8, 4.9 and 4.16) shall not exceed
the amount of the purchase price for the Shares purchased by the Purchaser
pursuant to this Agreement, plus reasonable attorneys' fees and expenses
incurred by the Purchaser.


SECTION 12. SPECIFIC PERFORMANCE

     The parties agree that irreparable damage will result in the event that
this Agreement is not specifically enforced, and the parties agree that any
damages available at law for a breach of this Agreement would not be an adequate
remedy. Therefore, the provisions hereof and the obligations of the parties
hereunder shall be enforceable in a court of equity, or other tribunal with
jurisdiction, by a decree of specific performance, and appropriate injunctive
relief may be applied for and granted in connection therewith. Such remedies and
all other remedies provided for in this Agreement shall, however, be cumulative
and not exclusive and shall be in addition to any other remedies which a party
may have under this Agreement or otherwise.


                                      -42-
<PAGE>

SECTION 13. EXPENSES

     (a) Whether or not the transactions herein contemplated are consummated,
the Company shall pay (i) the costs, fees and expenses of the Company and its
counsel in connection with the Stock Purchase Agreements, the Certificate of
Amendment, the Stockholders' Agreement and the Registration Rights Agreement,
other related documentation and the issuance of the Shares and the Conversion
Shares and the furnishing of all opinions by counsel for the Company, (ii) the
costs, fees and expenses of Morgan, Lewis & Bockius LLP in connection with the
Stock Purchase Agreements, the Certificate of Amendment, the Stockholders'
Agreement and the Registration Rights Agreement, other related documentation and
the transactions contemplated hereby and thereby (whether or not a Closing
occurs hereunder) and if the Closing occurs the Company will make such payment
on the Closing Date; provided, however, that such fees and expenses shall not
exceed $80,000 without the approval of the Company, (iii) the fees and expenses
of counsel to the Purchasers in connection with any amendments to or
modifications or waivers of any provisions of the Stock Purchase Agreements, the
Certificate of Amendment, the Stockholders' Agreement or the Registration Rights
Agreement, other related documentation or in connection with any other
agreements between the Purchasers and the Company and (iv) the fees and expenses
(including attorneys' fees and expenses) of any holder of Shares or Conversion
Shares in enforcing its rights against the Company if the Company defaults in
its obligations hereunder, under the Certificate of Amendment, the Stockholders'
Agreement or the Registration Rights Agreement.

     (b) In addition to all other sums due hereunder or provided for in this
Agreement, the Company shall pay to the Purchaser or its agents, respectively,
an amount sufficient to indemnify such persons (net of any Taxes on any
indemnity payments) against all reasonable costs and expenses (including
reasonable attorneys' fees and expenses and reasonable costs of investigation)
and damages and liabilities incurred by the Purchaser or its agents pursuant to
any investigation or proceeding brought by any third party against any or all of
the Company, the Purchasers, or their agents, arising out of or in connection
with the Stock Purchase Agreements, the Stockholders' Agreement, the
Registration Rights Agreement or the purchase of the Shares (or any transactions
contemplated hereby or thereby or any other document or instrument executed
herewith or therewith or pursuant hereto or thereto), whether or not the
transactions contemplated by this Agreement are consummated, which investigation
or proceeding requires the participation of the Purchaser or its agents or is
commenced or filed against the Purchaser or its agents because of the Stock
Purchase Agreements, the Stockholders' Agreement, the Registration Rights
Agreement or the purchase of the Shares (or any of the transactions contemplated
hereby or thereby or any other document or instrument executed herewith or
therewith or pursuant hereto or thereto), other than any investigation or
proceeding in which it is finally determined that there was gross negligence or
willful misconduct on the part of the Purchaser or its agents which was not
taken by them in reliance upon any of the Company's representations, warranties,
covenants or agreements in the Stock Purchase Agreements, the Stockholders'
Agreement, the Registration Rights Agreement or in any other documents or


                                      -43-
<PAGE>

instruments contemplated hereby or thereby or executed herewith or therewith or
pursuant hereto or thereto. The Company shall assume the defense, and shall have
its counsel represent the Purchaser and such agents, in connection with
investigating, defending or preparing to defend any such action, suit, claim or
proceeding (including any inquiry or investigation); provided, however, that the
Purchaser, or any such agent, shall have the right (without releasing the
Company from any of its obligations hereunder) to employ its own counsel and
either to direct its own defense or to participate in the Company's defense, but
the fees and expenses of such counsel shall be at the expense of such Person
unless (i) the employment of such counsel shall have been authorized in writing
by the Company in connection with such defense, (ii) the Company shall not have
provided its counsel to take charge of such defense or (iii) the Purchaser, or
such agent of the Purchaser, shall have concluded that there may be defenses
available to it or them which are different from or additional to those
available to the Company, then in any of such events referred to in clauses (i),
(ii) or (iii) such counsel fees and expenses (but only for one counsel for the
Purchaser and its agents) shall be borne by the Company. Any settlement of any
such action, suit, claim or proceeding shall require the consent of both the
Company and such indemnified person (neither of which shall unreasonably
withhold its consent).

     (c) The Company agrees to pay, or to cause to be paid, all documentary,
stamp and other similar Taxes levied under the laws of the United States of
America, any state or local Taxing Authority thereof or therein or any other
applicable jurisdiction in connection with the issuance and sale of the Shares
and the execution and delivery of the Stock Purchase Agreements, the
Stockholders' Agreement, the Registration Rights Agreement and any other
documents or instruments contemplated hereby or thereby and any modification of
the Certificate of Amendment, the Stockholders' Agreement, the Registration
Rights Agreement or the Stock Purchase Agreements or any such other documents or
instruments and will hold the Purchaser harmless without limitation as to time
against any and all liabilities with respect to all such Taxes.

     (d) The obligations of the Company under this Section 13 shall survive the
Closing hereunder and any termination of the Stock Purchase Agreements.


SECTION 14. DIRECT PAYMENTS

     As long as the Purchaser or any institutional holder which is a direct or
indirect transferee (as a result of one or more transfers) from the Purchaser
shall be the holder of any Shares, the Company will make all redemption
payments, liquidation payments and other distributions by wire transfer to the
Purchaser's or such other holder's (or its nominee's) account at any bank or
trust company, notwithstanding any contrary provision herein or in the Company's
certificate of incorporation with respect to the place of payment. The Purchaser
has provided an address on Schedule 1 hereto for payments by wire transfer, and
such address may 


                                      -44-
<PAGE>

be changed for the Purchaser or any subsequent holder by notice to the Company.
All such payments shall be made in U.S. dollars and in federal or other
immediately available funds.

SECTION 15. AMENDMENTS AND WAIVERS

     (a) The terms and provisions of this Agreement may be amended, waived,
modified or terminated only with the written consent of the Persons identified
in clause (i) and (ii) of the definition of "Fleming Holders"; provided,
however, that if no Shares or Conversion Shares are held by such Persons, the
written consent of holders of two-thirds of outstanding Shares and Conversion
Shares shall be required for any such amendment, waiver, modification or
termination.

     (b) The Company agrees that all holders of Shares and Conversion Shares
shall be notified by the Company in advance of any proposed amendment, waiver,
modification or termination, but failure to give such notice shall not in any
way affect the validity of any such amendment, waiver, modification or
termination. In addition, promptly after obtaining the written consent of the
holders as herein provided, the Company shall transmit a copy of any amendment,
waiver, modification or termination which has been adopted to all holders of
Shares and Conversion Shares then outstanding, but failure to transmit copies
shall not in any way affect the validity of any such amendment, waiver,
modification or termination.


SECTION 16. EXCHANGE OF SHARES; CANCELLATION OF SURRENDERED SHARES; REPLACEMENT

     (a) Subject to Section 6 hereof, at any time at the request of any holder
of Shares to the Company at its address provided under Section 17 hereof, the
Company at its expense (except for any transfer tax arising out of the exchange)
will issue and deliver to or upon the order of the holder in exchange therefor a
new certificate or certificates in such amount or amounts as such holder may
request in the aggregate representing the number of Shares represented by such
surrendered certificates, and registered in the name of such holder or as such
holder may direct.

     (b) Any Share certificate which is converted into Conversion Shares in
whole or in part shall be cancelled by the Company, and no new Share
certificates shall be issued in lieu of any Shares which have been converted
into Conversion Shares. The Company shall issue a new certificate with respect
to any Shares which were not converted into Conversion Shares and were
represented by a certificate which was converted in part.

     (c) Upon receipt of evidence satisfactory to the Company of the loss,
theft, destruction or mutilation of any Share certificate and, in the case of
any such loss, theft or destruction, upon delivery of an indemnity agreement
reasonably satisfactory to the Company (if 


                                      -45-
<PAGE>

requested by the Company and unsecured in the case of the Purchaser or an
institutional holder), or in the case of any such mutilation, upon surrender of
such Share certificate (which surrendered Share certificate shall be cancelled
by the Company), the Company will issue a new Share certificate of like tenor in
lieu of such lost, stolen, destroyed or mutilated Share certificate, as if the
lost, stolen, destroyed or mutilated Share certificate were then surrendered for
exchange.


SECTION 17. NOTICES

     All notices, requests, demands, consents and other communications hereunder
shall be in writing and shall be delivered by hand or shall be sent by telex or
telecopy (confirmed by registered, certified or overnight mail or courier,
postage and delivery charges prepaid), (i) if to the Company, to Hudson
Technologies, Inc., 275 North Middletown Road, Pearl River, New York 10965,
Attention: Stephen P. Mandracchia, with a copy to Tenzer Greenblatt LLP, 405
Lexington Avenue, New York, NY 10174, Attention: Kenneth Selterman, Esq. or (ii)
if to the Purchaser, at the address indicated on Schedule 1 hereto, with a copy
to Morgan, Lewis & Bockius LLP, 101 Park Avenue, New York, NY 10178-0060,
Attention: David W. Pollak, Esq., or at such other address as a party may from
time to time designate as its address in writing to the other party to this
Agreement. Whenever any notice is required to be given hereunder, such notice
shall be deemed given and such requirement satisfied only when such notice is
delivered or, if sent by telex or telecopier, when received.


SECTION 18. MISCELLANEOUS

     (a) The Stock Purchase Agreements, the Stockholders' Agreement, the
Registration Rights Agreement and, upon the Closing, the Certificate of
Amendment, together with any further agreements entered into by the Purchaser
and the Company at the Closing, contain the entire agreement between the
Purchaser and the Company, and supersede any prior oral or written agreements,
commitments, terms or understandings regarding the subject matter hereof.

     (b) Any provision of this Agreement which is prohibited or unenforceable in
any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of
such prohibition or unenforceability without invalidating the remaining
provisions hereof, and any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such provision in any
other jurisdiction. To the extent permitted by applicable law, the parties
hereby waive any provision of law which may render any provision hereof
prohibited or unenforceable in any respect.

     (c) This Agreement shall be binding upon and inure to the benefit of the
parties hereto and their respective successors and assigns, whether so expressed
or not; provided, that (a) the Company may not assign any of its rights, duties
or obligations under this 


                                      -46-
<PAGE>

Agreement, except with the Purchaser's written consent, and (b) the Purchaser
may assign any of its rights, duties or obligations under this Agreement to a
purchaser of its Shares, provided that such purchaser is reasonably acceptable
to the Company.

     (d) In addition to any assignment by operation of law, the Purchaser may
assign, in whole or in part, any or all of its rights (and/or obligations) under
this Agreement to any permitted transferee of any or all of its Shares or
Conversion Shares, and (unless such assignment expressly provides otherwise) any
such assignment shall not diminish the rights the Purchaser would otherwise have
under this Agreement or with respect to any remaining Shares or Conversion
Shares held by the Purchaser.

     (e) No course of dealing and no delay on the part of any party hereto in
exercising any right, power, or remedy conferred by this Agreement shall operate
as a waiver thereof or otherwise prejudice such party's rights, powers and
remedies. No single or partial exercise of any right, power or remedy conferred
by this Agreement shall preclude any other or further exercise thereof or the
exercise of any other right, power or remedy.

     (f) The headings and captions in this Agreement are for convenience of
reference only and shall not define, limit or otherwise affect any of the terms
or provisions hereof.

     (g) This Agreement shall be governed by, and construed in accordance with,
the laws of the State of New York (other than any conflict of laws rules which
might result in the application of the laws of any other jurisdiction).

     (h) This Agreement may be executed by the parties hereto in separate
counterparts, each of which when so executed and delivered shall be an original,
but all such counterparts shall together constitute one and the same instrument,
and all signatures need not appear on any one counterpart.

     (i) THE COMPANY HEREBY CONSENTS TO THE JURISDICTION OF ANY STATE OR FEDERAL
COURT LOCATED WITHIN THE COUNTY OF NEW YORK, STATE OF NEW YORK AND IRREVOCABLY
AGREES THAT, SUBJECT TO THE PURCHASER'S ELECTION, ALL ACTIONS OR PROCEEDINGS
RELATING TO THIS AGREEMENT, THE CERTIFICATE OF AMENDMENT, THE STOCKHOLDERS'
AGREEMENT, THE REGISTRATION RIGHTS AGREEMENT, THE SHARES OR THE CONVERSION
SHARES MAY BE LITIGATED IN SUCH COURTS. THE COMPANY ACCEPTS FOR ITSELF AND IN
CONNECTION WITH ITS PROPERTIES, GENERALLY AND UNCONDITIONALLY, THE NONEXCLUSIVE
JURISDICTION OF THE AFORESAID COURTS AND WAIVES ANY DEFENSE OF FORUM NON
CONVENIENS, AND IRREVOCABLY AGREES TO BE BOUND BY ANY JUDGMENT RENDERED THEREBY
IN CONNECTION WITH THIS AGREEMENT, THE CERTIFICATE OF AMENDMENT, THE
STOCKHOLDERS' AGREEMENT, THE REGISTRATION RIGHTS 


                                      -47-
<PAGE>

AGREEMENT, THE SHARES OR THE CONVERSION SHARES. A COPY OF ANY SUCH PROCESS SO
SERVED SHALL BE MAILED BY REGISTERED MAIL TO THE COMPANY AT THE ADDRESS OF THE
COMPANY PROVIDED HEREUNDER EXCEPT THAT UNLESS OTHERWISE PROVIDED BY APPLICABLE
LAW, ANY FAILURE TO MAIL SUCH COPY SHALL NOT AFFECT THE VALIDITY OF SERVICE OF
PROCESS. AS AN ALTERNATIVE TO SERVICE OF PROCESS ON SUCH AGENT (WHETHER OR NOT
ANY SUCH AGENT HAS BEEN APPOINTED), THE COMPANY HEREBY AGREES THAT SERVICE UPON
IT BY MAIL SHALL CONSTITUTE SUFFICIENT NOTICE AND SERVICE OF PROCESS. NOTHING
HEREIN SHALL AFFECT THE RIGHT TO SERVE PROCESS IN ANY OTHER MANNER PERMITTED BY
LAW OR SHALL LIMIT THE RIGHT OF THE PURCHASER TO BRING PROCEEDINGS OR OBTAIN OR
ENFORCE JUDGMENTS AGAINST THE COMPANY IN THE COURTS OF ANY OTHER JURISDICTION.

     (j) THE COMPANY AND THE PURCHASER HEREBY WAIVE THEIR RESPECTIVE RIGHTS TO A
JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION BASED UPON OR ARISING OUT OF THIS
AGREEMENT, THE CERTIFICATE OF AMENDMENT, THE STOCKHOLDERS' AGREEMENT, THE
REGISTRATION RIGHTS AGREEMENT, THE SHARES OR THE CONVERSION SHARES, OR ANY
DEALINGS BETWEEN THEM RELATING TO THE SUBJECT MATTER OF THIS TRANSACTION. THE
COMPANY AND THE PURCHASER ALSO WAIVE ANY BOND OR SURETY OR SECURITY UPON SUCH
BOND WHICH MIGHT, BUT FOR THIS WAIVER, BE REQUIRED OF THE PURCHASER. THE SCOPE
OF THIS WAIVER IS INTENDED TO BE ALL-ENCOMPASSING OF ANY AND ALL DISPUTES THAT
MAY BE FILED IN ANY COURT AND THAT RELATE TO THE SUBJECT MATTER OF THIS
TRANSACTION, INCLUDING, WITHOUT LIMITATION, CONTRACT CLAIMS, TORT CLAIMS, BREACH
OF DUTY CLAIMS, AND ALL OTHER COMMON LAW AND STATUTORY CLAIMS. THE COMPANY AND
THE PURCHASER FURTHER WARRANT AND REPRESENT THAT EACH HAS REVIEWED THIS WAIVER
WITH ITS LEGAL COUNSEL, AND THAT EACH KNOWINGLY AND VOLUNTARILY WAIVES ITS JURY
TRIAL RIGHTS FOLLOWING CONSULTATION WITH LEGAL COUNSEL. THIS WAIVER IS
IRREVOCABLE, MEANING THAT IT MAY NOT BE MODIFIED EITHER ORALLY OR IN WRITING,
AND THIS WAIVER SHALL APPLY TO ANY SUBSEQUENT AMENDMENTS, RENEWALS, SUPPLEMENTS
OR MODIFICATIONS TO (OR ASSIGNMENTS OF) THIS AGREEMENT, THE CERTIFICATE OF
AMENDMENT, THE STOCKHOLDERS' AGREEMENT, THE REGISTRATION RIGHTS AGREEMENT, THE
SHARES OR THE CONVERSION SHARES. IN THE EVENT OF LITIGATION, THIS AGREEMENT MAY
BE FILED AS A WRITTEN CONSENT TO A TRIAL (WITHOUT A JURY) BY THE COURT.

                  [remainder of page intentionally left blank]


                                      -48-
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the date first above written.


                                   HUDSON TECHNOLOGIES, INC.


                                   By ______________________________
                                   Name:  Kevin J. Zugibe
                                   Title: Chairman and Chief Executive Officer


Accepted and Agreed to as of the
date first above written by the
undersigned Purchaser:

FLEMING US DISCOVERY FUND III, L.P.

By: FLEMING US DISCOVERY
      PARTNERS, L.P.,
    its general partner

    By: FLEMING US DISCOVERY, LLC,
        its general partner

        By: __________________________                                      
            Robert L. Burr, member


<PAGE>



                                                                      Schedule 1
                                                                    to the Stock
                                                              Purchase Agreement


<TABLE>
<CAPTION>
                                   Social Security or Taxpayer             Number of Shares at               Share Purchase
   Name of Purchaser                  Identification Number                      Closing                         Price
- - - -------------------------          ---------------------------             -------------------               --------------
<S>                                         <C>                                   <C>                          <C>       
Fleming US Discovery Fund                   13-3907673                            56,019                       $5,601,900
III, L.P.

Fleming US Discovery                        13-3936603                             8,981                       $  898,100
Offshore Fund III, L.P.
</TABLE>



(a) address for communications:

    Fleming Capital Management
    320 Park Avenue
    New York, NY  10022
    Fax: (212) 508-3928
    Attention: Robert L. Burr
               Robert M. Zech


(b) address for payments by
    wire transfer:

<TABLE>
<CAPTION>
<S>                                              <C> 
    Fleming US Discovery Fund III, L.P.          Fleming US Discovery Offshore Fund III, L.P.

    Chase Manhattan Bank                         Citibank, N.A.
    ABA # 021000021                              ABA # 021000089 / Chips UID# 0008 / Swift Code - CITIUS33
    A/C # 10921671                               A/C: The Bank of Bermuda Limited, Hamilton, Bermuda
    A/C: Robert Fleming Inc.                     Chips UID# 005584
    A/C # 400-470551                             Swift Code: BBDA BM HM
    A/C: Fleming US Discovery Fund III, L.P.     A/C: Fleming US Discovery Offshore Fund III, L.P.
                                                 A/C # 0246769
</TABLE>


<PAGE>


                                                                      Schedule 2
                                                                    to the Stock
                                                              Purchase Agreement

                                  Indebtedness


<TABLE>
<CAPTION>
     Amount                         Liens                             Title and Date of Agreement
<S>                                  <C>                                        <C> 
     ------                         -----                             ---------------------------
   $ 1,488,000                   All Assets                  Hudson Technologies Company and Environmental
                                                                  Support Solutions, Inc. with the CIT
                                                            Group/Credit Finance Inc./$5,000,000 Commercial
                                                              Credit Line Finance Facility, April 29, 1998

    $ 671,000           Ft. Lauderdale Real Property           Turnberry Savings Bank - Promissory Note,
                                                               Florida Mortgage & Security Agreement and
                                                                Collateral Assignment of Leases & Rent,
                                                                            December 6, 1996

    $ 54,000             Todak Reclamation Machines                  Lease as amended by Amendment
                                                                 September 1, 1994 Refrigerant Recovery
                                                                   Corporation of America- T.L. Yount

    $ 72,000               Lab and Other Equipment            Lease Agreement-Hudson Technologies, Co. and
                                                                       Green Tree Vendor Services
                                                                            October 19, 1998

    $ 872,000         Aerosol Packaging Equipment, ISO       Hudson Technologies, Inc. and The Walden Asset
                       Containers and Other Equipment              Group, Inc. Master Equipment Lease 
                                                                           August 2, 1996

    $ 495,000                 Hillburn Location              Lease - Ramapo Land Co., Inc. and Refrigerant
                                                                      Reclamation Industries, Inc.
                                                                              May 20, 1994

    $ 279,000                 Rantoul Location                 Lease - Roeco Enterprises, Inc. and Hudson
                                                                           Technologies, Inc.
                                                                            October 1, 1997

    $ 64,000                Baton Rouge Location                    Lease - Jason McCann and Hudson 
                                                                          Technologies, Inc.
                                                                             April 7, 1995

    $ 131,000               Punta Gorda Location               Commercial Lease - Ellen H. Lojingeer and
                                                                      Hudson Technologies Company
                                                                             April 19, 1997

    $ 256,000               Pearl River Location               Lease - Rockhill Building Corporation and
                                                                      Hudson Technologies Company
                                                                            November 9, 1998

    $ 52,000                    NEVA Machine                   Commercial Loan - Barnett Bank and Hudson
                                                                           Technologies, Inc.
                                                                           September 5, 1996

    $ 51,000               1999 Freightliner FL70                 Retail Installment Contract - Hudson
                                                              Technologies Co. and Gallagher Truck Center,
                                                                          Inc. March 16, 1999

    $ 51,000               1999 Freightliner FL70                 Retail Installment Contract - Hudson
                                                             Technologies, Inc. and Gallagher Truck Center,
                                                                         Inc. February 19, 1999

</TABLE>

<PAGE>

                                                                      Schedule 3
                                                                    to the Stock
                                                              Purchase Agreement

                                   Investments

       -- 25% interest of Environmental Support Solutions, Inc. (ESS)
       -- Hudson guarantee of ESS office lease in Mesa, Arizona


<PAGE>


                                                                      Schedule 4
                                                                    to the Stock
                                                              Purchase Agreement

                               Disclosure Material

1)   Confidential Informational Memorandum, as amended
2)   Depot strategy memorandum
3)   Management presentation January 1999, January 1999, March 1999
4)   Proforma depot income statement December 31, 1998
5)   Draft Form 10-KSB for the year ended December 31, 1998
6)   Summary financial information as of March 11, 1999 and February 28, 1997
7)   Budget for year ended December 31, 1999
8)   Detailed summary information including forecast assumptions to five year
     forecast including but not limited to, service and refrigerant revenues,
     capital expenditures, depot sales and G&A expense, number of employees and
     summary of refrigerant sales assumptions
9)   Depot sales "bottom up" model
10)  Summary depot model
11)  Proforma depot and satellite budget
12)  Revenues by customer September 30, 1998 and December 31, 1998
13)  Market data information including but not limited to, First Boston report,
     February 1999; ARI statistical profile, Air Conditioning News - September
     22, 1997, Ducker Research Company - BSRIA, Commerce News - August 1, 1997,
     Equitable Security Report - November 1997
14)  Form 10-QSB for quarters ended March 31, 1998; June 30, 1998 and September
     30, 1998
15)  Form 10-KSB for years ended December 31, 1997; December 31, 1996 and
     December 31, 1995
16)  Revenues by job 1998 in total and by location
17)  ZugiBeast Patent
18)  Summary of revenue by site, R-Side vs. Non R-Side - December 31, 1998
19)  List of customer references, March 8, 1999; March 9, 1999; undated
20)  Financial package delivered to Board of Directors
21)  Letter to Bob Zech and Kingston Chu dated February 26, 1999 and attachments
22)  Refrigerant sales by site as of December 31, 1998
23)  Interoffice memorandum dated December 18, 1998 regarding DuPont reclamation
     forecast
24)  Inventory - FIFO/on hand report dated February 26, 1999
25)  Hudson consolidating roll-up financial reports for the period ended
     September 30, 1997, December 31, 1997, March 31, 1998, June 30, 1998,
     September 30, 1998 and December 31, 1998
26)  Quarterly financial results by location and in total for the years ended
     December 31, 1998 and 1997
27)  Refrigerant gross profit by major customer
28)  US refrigerant market size by automotive and HVAC/R
29)  Hudson Technologies, Inc. refrigerant sales by pounds and dollars as of
     1998 and 1997

<PAGE>


30)  Listing of officer compensation as of December 31, 1998
31)  List of personal references for officers of the Company
32)  Listing of stock options by individual for the 1994 and 1997 stock option
     plans
33)  Listing of total common stock and common stock equivalents outstanding at
     December 31, 1998
34)  Market sizing by service event
35)  Detail of sales by line of business
36)  Allocation of selling general and administrative expenses for projected
     periods
37)  Weather data cities
38)  Letter dated February 27, 1999 to David Pollack, Esq. including:
     o    Consolidated Amended Complaint, dated October 29, 1998
     o    Affidavit of William C. Komaroff in support of Defendants' Motion to
          Dismiss, sworn to December 23, 1998, with exhibits
     o    Memorandum of Law in Support of Defendants' Motion to Dismiss
     o    Plaintiffs' Memorandum of Law in Opposition to Defendants' Motion to
          Dismiss
     o    First Amended Verified Complaint
     o    Notice of Motion to Dismiss, dated January 11, 1999, with supporting
          affidavits and exhibits
     o    Memorandum of Law in Support of Defendant Hudson Technologies, Inc.'s
          Motion to Dismiss
     o    Affidavits of Gary P. Harstead, P.E. and Frank J. Getchell, in
          opposition to Motion to Dismiss with Exhibits
     o    Memorandum of Law of Plaintiff United Water New York Inc. in
          Opposition to Defendant Hudson Technologies, Inc.'s Motion to Dismiss
     o    Reply Affidavit of Daniel Riesel in Support of Motion to Dismiss
     o    Reply Memorandum of Law of Hudson Technologies, Inc. in Further
          Support of Its Motion to Dismiss
     o    Copy of Stephen P. Mandracchia's letter dated January 31, 1998 to
          Rosol Agency, together with backup information underlying the issues
     o    Summary of Monitoring Well Testing Results for R-11 and R-12 through
          January 1999
     o    Copy of September 22, 1998 letter from LeBoeuf, Lamb, Greene and
          MacRae itemizing for settlement discussion purposes only, United
          Water's claimed damages
39)  Letter dated March 3, 1999 to Robert Fromberg, Esq. including:
     o    Copies of Certificate of Incorporation and all amendments thereto with
          filing receipts; and copy of original by-laws and all amendments
          thereto
     o    Schedule of stock options issued to Officers
     o    Copies of Stock Purchase Agreement, Shareholders Agreement, Standstill
          Agreement and Registration Agreement with DuPont Chemical and Energy
          Operations, Inc.
     o    Schedule of outstanding stock and stock equivalents; "Average Number
          of Shares, December 1998" (1 page))
     o    Copies of Loan and Security Agreement, General Security Agreement,
          Guaranty from Hudson Technologies, Inc., Junior Mortgage and Security
          Agreement, and Warrant with The CIT Group/Credit Finance, Inc.


<PAGE>

     o    Promissory Note, Florida Mortgage and Security Agreement, and
          Collateral Assignment of Leases and Rents with Turnberry Bank
     o    Note to Frederick T. Zugibe, Sr.; dated February 25, 1999
     o    Schedule of Capital Leases as of December 31, 1998 (1 page)
     o    Schedule of Operating Leases as of December 31, 1998 (3 pages)
40)  Letter dated March 4, 1999, to Judy Walkoff, Esq. including;
     o    Copy of United Capitol Insurance Company Pollution Insurance Policy
          for the term November 14, 1997 to November 14, 1998, Policy Number
          SLP4001093
     o    Copy of original draft of the DEC's proposed consent order
     o    Copy of plans for proposed remediation system; dated April 15, 1998
     o    Copy of March 1, 1999 response by Sive, Paget & Riesel to sur-reply
          submission of United Water
41)  Letter dated March 8, 1999, to Judy Walkoff, Esq. including;
     o    Copies of Interim Settlement Agreement, dated December 9, 1996
     o    Copies of the following correspondence with United Capital:
          o    United Capital letter, dated June 24, 1998
          o    Hudson Technologies, Inc. letter, dated July 28, 1998
          o    United Capital letter, dated November 9, 1998
          o    United Capital letter, dated October 9, 1998
     o    Copies of original draft proposal and cost estimate for remediation
          system (dated September 12, 1997)
42)  Letter dated March 10, 1999, to Lisa Wager, Esq. including;
     o    Copy of Insurance Policy issued by National Insurance Company of
          Pittsburgh; Policy Number 4866308
     o    Copies of the following Correspondence with Insurer:
          o    Hudson Technologies, Inc. letter, dated March 7, 1998
          o    A.I. Management letter, dated March 16, 1998
          o    Hudson Technologies, Inc. letter, dated March 28, 1998
          o    Hudson Technologies, Inc. letter, dated April 21, 1998
          o    Hudson Technologies, Inc. letter, dated May 19, 1998
          o    A.I. Management letter, dated June 1, 1998
          o    Hudson Technologies, Inc. letter, dated June 2, 1998
          o    Hudson Technologies, Inc. letter, dated June 24, 1998
          o    Hudson Technologies, Inc. letter, dated July 23, 1998, with
               attached letter of Davis Polk, dated July 22, 1998
          o    Hudson Technologies, Inc. letter, dated October 14, 1998
          o    A.I. Management letter, dated November 24, 1998
          o    Hudson Technologies, Inc. letter, dated December 2, 1998
     o    Copies of Press Releases and Westergaard

43)  Letter dated March 11, 1999 to Lisa Wager, Esq. including;
          o    Four page summary of restatement issues
          o    August 9, 1997 letter to BDO Seidman, marked DRAFT (2 pages)
          o    Audit Committee Meeting Agenda, for July 30, 1997 meeting (1
               page)
          o    Six pages of minutes from July 30, 1997 Audit Committee meeting


<PAGE>

44)  Ramapo Well Field VOC Summaries, provided by United Water of New Jersey for
     Production Well #84, 85, 99, 100 for period January 1, 1997 through August
     31, 1998 (13 pages)
45)  Monitoring Well Summaries for R-11 and R-12 levels, for period April 22,
     1996 and September 3, 1998 (2 pages)
46)  Barnett Bank lease
47)  Greentree Vendor lease
48)  Thomas L. Yount lease
49)  Walden leases, Schedule 1 and 2
50)  Building Leases
     a)   Hillburn, New York
     b)   Pearl River, New York
     c)   Rantoul, Illinois
     d)   Baton Rouge, Louisiana
     e)   Punta Gorda, Florida
51)  GMAC leases, 1999 Vans (2)
52)  CIT waiver of provisions prohibiting dividends
53)  February 16, 1999 Proxy materials for March 16, 1999 Special Meeting of the
     Shareholders
54)  Letter dated March 26, 1999 to Judy Walkoff, Esq. Including
     o    Copy of written statement of Gail M. Getman
     o    Copy of Notice of Violation, dated 2/26/99 from LA. Dept. of Public
          Safety
     o    Copy of Notice of Violation, dated 3/8/99 from LA. Dept. of Public
          Safety
     o    Copy of Phase II Subsurface Investigation, dated 8/31/98, for 100
          Brenner Drive, Congers, New York

<PAGE>


                                                                   Schedule 4.12
                                                                    to the Stock
                                                              Purchase Agreement



       Permits, Licenses & Approvals; Intellectual Property & Other Rights

All patents, patent rights, trademarks, trademark rights, trade names, trade
name rights and copyrights are subject to, and constitute collateral for, the
Loan & Security Agreement, and related documents, executed and delivered in
connection with the Line of Credit issued by The CIT Group/Credit Finance, Inc.


<PAGE>


                                                                   Schedule 4.16
                                                                    to the Stock
                                                              Purchase Agreement

                            Environmental Compliance

Paragraph 4.16 (a)
     o    All facts and circumstances relating to the alleged contamination of
          Ramapo Valley Aquifer as alleged in action entitled United Water New
          York Inc.v. Hudson Technologies, Inc., Rockland County Supreme Court
          Index # 3126/98, and all proceedings, discussions and negotiations
          with the N.Y.S. DEC for a consent order relative to same.
     o    Ammonia release incident at Baton Rouge Louisiana facility on January
          25, 1999, Notice of Violation dated 2/26/99, alleging violation for
          "Delayed Release Notification of Ammonia" - $1,000 proposed penalty,
          and Notice of Violation dated March 9, 1999 (received March 26, 1999)
          for alleged "Careless Handling of Anhydrous Ammonia - $7,500 proposed
          penalty.
     o    Company reported vapor release of approximately 8,000 lbs. of R22 on
          4/23/98 at Hillburn, NY facility due to failed pressure relief device.
     o    Phase II Subsurface Investigation Report, dated August 31, 1998,
          relating to 100 Brenner Drive, Congers, New York

Paragraph 4.16 (b)
     o    Alleged contamination of groundwater and Ramapo Valley Aquifer, which
          is the subject of the action entitled United Water New York Inc.v.
          Hudson Technologies, Inc., Rockland County Supreme Court Index #
          3126/98, and which is the subject of all proceedings, discussions and
          negotiations with the N.Y.S. DEC for a consent order relative to same.
     o    Phase II Subsurface Investigation Report, dated August 31, 1998,
          relating to 100 Brenner Drive, Congers, New York, reported detection
          in three monitoring wells of five (5) volatile organic compounds in
          groundwater at levels in excess of groundwater quality guidance
          values. None of these compounds were ever present at the facility
          during the Company's use and occupancy of the premises.

Paragraph 4.16 (c) & (d)             NA

Paragraph 4.16 (e)
     The Company is not aware of any asbestos-containing materials, except that
     one (1) storage tank located at Baton Rouge, Louisiana facility, is
     believed to have asbestos insulation.

Paragraph 4.16 (f)

     None

Paragraph 4.16 (g)                   NA


<PAGE>


                                                                      Schedule 5
                                                                    to the Stock
                                                              Purchase Agreement

                                      Liens

<TABLE>
<CAPTION>
           Title and Date of Agreement                                  Affected Property
<S>        <C>                                                          <C>                                    
1)         Turnberry Savings Bank - Promissory Note, Florida Mortgage   Mortgage on Ft. Lauderdale Property
           & Security Agreement and Collateral Assignment of Leases &
           Rents -December 6, 1996
2)         CIT Credit Finance - Hudson Technologies Company and         All Assets and property
           Environmental Support Solutions, Inc. with The CIT
           Group/Credit Finance, Inc. - $5,000,000 Commercial Credit
           Line Finance Facility  - April 29, 1998
3)         Lease Agreement - Hudson Technologies, Inc. and Absolute     Lab Equipment
           Financial Services, Ltd. Partnership - March 22, 1995
4)         Open End Commercial Motor Vehicle Lease Agreement Franklin   International Rack Truck
           Equity Leasing Co. and Hudson Technologies, Inc. - April
           10, 1995
5)         Open End Commercial Motor Vehicle Lease Agreement Franklin   International Rack Truck
           Equity Leasing Co. and Hudson Technologies, Inc. - April
           10, 1995
6)         Open End Commercial Motor Vehicle Lease Agreement Franklin   International Rack Truck
           Equity Leasing Co. and Hudson Technologies, Inc. - April
           10, 1995
7)         Hudson Technologies, Inc. and Associates Commercial Corp.    Forklift
           (IL) June 28, 1995
8)         Hudson Technologies, Inc. and Associates Commercial Corp.    Forklift
           (LA) June 28, 1995
9)         Lease Agreement (NY) Hudson Technologies,  Company and       Lab Equipment
           Newcourt Financial - April 21, 1998
10)        Lease Agreement (FL) Hudson Technologies Company and         Lab Equipment
           Newcourt Financial - April 21, 1998
11)        Lease Agreement - Hudson Technologies Company and            Lab and Other Equipment
           Greentree Vendor Service - October 19, 1998
12)        Commercial Loan - Barnett Bank and Hudson Technologies,      NEVA Machine
           Inc. - September 5, 1996
13)        Vehicle Retail Installment Contract - Hudson                 Pickup Truck
           Technologies, Inc. and Sam Galloway Ford, Inc. 
           August 25, 1995
14)        Lease as amended by Amendment September 1, 1994              Todak Machine
           Refrigerant Recovery Corporation of America - CA Craig II
15)        Lease as amended by Amendment September 1, 1994              Todak Machine
           Refrigerant Recovery Corporation of America - Fred Goad
16)        Lease as amended by Amendment September 1, 1994              Todak Machine
           Refrigerant Recovery Corporation of America - DE Schorsten
17)        Lease as amended by Amendment September 1, 1994              Todak Machine
           Refrigerant Recovery Corporation of America - TL Yount
18)        Lease as amended by Amendment September 1, 1994              Todak Machine
           Refrigerant Recovery Corporation of America  - Joseph
           Russell
19)        Lease as amended by Amendment September 1, 1994              Todak Machine
           Refrigerant Recovery Corporation of America  - William
           Davis
20)        Retail Installment Contract - Hudson Technologies Company    Freightliner Box Truck 
           and Gallagher Truck Center, Inc. - March 16, 1999
21)        Retail Installment Contract - Hudson Technologies Company    Freightliner Box Truck
           and Gallagher Truck Center, Inc. - February 19,1999
</TABLE>

<PAGE>


                                                                      Schedule 6
                                                                    to the Stock
                                                              Purchase Agreement


                                  Capital Stock

(a) Authorized, Issued and Outstanding

     (i)  authorized capital stock 20,000,000 shares of Common Stock, par value
          $.01 5,000,000 shares of Preferred Stock, par value $.01

     (ii) number of designated shares of Preferred Stock in each series or class
          after giving effect to the Certificate of Designations

          75,000 shares of Series A Convertible Preferred Stock

     (iii) number of shares outstanding in each series or class after giving
          effect to the issuance of Shares contemplated by the Stock Purchase
          Agreements

          5,085,820 shares of Common Stock 65,000
          shares of Series A Convertible Preferred Stock

(b) Common Stock Reserved for Issuance

     (i)  2,736,842 shares of Common Stock to be issued upon conversion of the
          Series A Convertible Preferred Stock 

     (ii) 2,544,529 shares of Common Stock to be issued pursuant to Company
          Stock Option Plans and outstanding warrants (including 500,000 shares
          pursuant to future plans)

<PAGE>


                                                                       EXHIBIT B
                                                                    To the Stock
                                                              Purchase Agreement

1.   Paragraph 4.2 (d)
     Registration rights were granted by the Company pursuant to and as provided
     in the Registration Agreement between DuPont Chemical and Energy
     Operations, Inc, E.I. Dupont de Nemours & Company and Hudson Technologies,
     Inc.; dated 1/29/97.

2.   Paragraph 4.2 (e)
     An agreement with respect to the voting of capital stock of the Company was
     made pursuant to and as provided in the Shareholders' Agreement and
     Standstill Agreement, each dated 1/29/97, between DuPont Chemical and
     Energy Operations, Inc., E.I. Dupont de Nemours & Company and Hudson
     Technologies, Inc.

3.   Paragraph 4.2 (f)
     Certain anti-dilution or other adjustment provisions were granted pursuant
     to and as provided in the Stock Purchase Agreement, Shareholders'
     Agreement, Standstill Agreement and Registration Agreement, each dated
     1/29/97 between DuPont Chemical and Energy Operations, Inc., E.I. Dupont de
     Nemours & Company and Hudson Technologies, Inc.

4.   Paragraph 4.6 (b)
     (i)  a. Sale of 75% ownership of ESS on 3/19/99
          b. The Affliliate Loan
     (ii) Except to the extent otherwise disclosed in the projected 1998
          financial statements contained in the Confidential Information
          Memorandum, as amended (Item 1 to Schedule 4.)

5.   Paragraph 4.7
     (i)  None
     (ii) None
          A)   In re Hudson Technologies, Inc. Securities Litigation, 98 Civ.
               1616 (JFK), pending in United States District Court, Southern
               District of New York - Defendant's motion to dismiss consolidated
               complaint is sub judice
          B)   United Water New York Inc. v. Hudson Technologies, Inc., Rockland
               County Supreme Court Index No. 3126/98 - Defendant's motion to
               dismiss certain causes of action in amended complaint is sub
               judice
          C)   BNY Financial Corporation v. Hudson Technologies Inc., N.Y.
               County Supreme Court Index #602203/98 - currently in discovery
          D)   Proceedings, discussions and negotiations with the NYSDEC for a
               protective order relative to Alleged contamination of groundwater
               and Ramapo Valley Aquifer, which is the subject of "B)" above

<PAGE>

          E)   Notice of Alleged Safety or Health Hazards, dated 2/3/99,
               received from Occupational Safety and Health Administration
               regarding Hillburn, NY facility. Notice issued in response to a
               complaint from an unnamed party, believed to be a former
               employee. A follow up meeting at the facility took place on March
               26, 1999 indicating that a formal report will be received within
               two weeks. Verbal comments from representative identified approx.
               10-12 primarily housekeeping and training items, all of which
               have been fully or partially addressed, which was so noted by
               representative at meeting.

6.   Paragraph 4.9
     (a)  Company Health & Dental Insurance Plans issued by, respectively, the
          New England and Met Life;
          Hudson Technologies, Inc. 401 (K) through M & T Bank
          Hudson Technologies, Inc. 1994 & 1997 Stock Options Plans
          Hudson Technologies, Inc. Flexible Benefit Plan, including Dependent
          Care Assistance Plan and Medical Reimbursement Plan
     (k)  None

7.   Paragraph 4.12
     a.   EPA Certified Reclaimer pursuant to 40 CFR Part 82
     b.   Certified Reclaimer under Air Conditioning and Refrigeration Institute
          ("ARI") Certified Reclaimer Program
     c.   State Contractor Licenses in States of California and Nevada
     d.   New York State Waste Hauler Permit and Connecticut Waste Hauler
          Permit, plus soth other and various local permits as applicable
     e.   License Agreement with ARI for use of ARI logo
     f.   License to use DuPont and SUVA trademarks pursuant to Segment Marketer
          Agreement with DuPont
     g.   patents, trademarks, and copyrights as listed on attached Schedule of
          Patents, Trademarks and Copyrights

8.   Paragraph 4.13 - NONE

9.   Paragraph 4.14
     Real Property Owned:
     -    3200 S.E. 14th Ave., Ft. Lauderdale, Florida
     -    Leased Real Property:
     -    25 Torne Valley Road, Hillburn, New York
     -    One Brenner Drive, Congers, New York
     -    896 W. Champaign Street, Rantoul, Illinois
     -    1197 Airline Highway, Baton Rouge, La.
     -    2720 Westport Road, Charlotte, North Carolina
     -    5474 Williamsburg Drive, Punta Gorda, Florida
     -    3930 Stoney Brook, Houston, TX
     -    1402 20th Street, N.W., Suite #14, Auburn, WA
<PAGE>

10.  Paragraph 4.22

     a.   Former names: Refrigerant Reclamation Industries, Inc.
          Refrigerant Recovery Corporation of America, Inc.
          Refrigerant Reclamation Corporation of America, Inc.
          Hudson Technologies of TN, Inc.
          GRR Co., Inc., d/b/a Golden Refrigerant
          HT Holdings, Inc.
     b.   Fictitious names:  Hudson Technologies of New York
          Hudson Technologies of Tennessee
          Hudson Technologies Company of Tennessee

11.  Paragraph 4.23 & 5.3
     a.   Wm Sword & Company Incorporated

<PAGE>


                   SCHEDULE OF PATENTS, TRADEMARKS, COPYRIGHTS


<TABLE>
<CAPTION>
TITLE-NAME                 TYPE             INVENTOR          OWNER         DATE ISSUED          NUMBER
- - - ----------                 ----             --------          -----         -----------          ------ 
<S>                        <C>               <C>               <C>               <C>              <C>   
Method & Apparatus
for Refrigerant
Reclamation                Patent           K. Zugibe         Hudson            1/3/95           5,377,499

Hydraulic System
for Recovering
Refrigerants               Patent           K. Zugibe         Hudson            4/2/96           5,502,974

Method & Apparatus
for Reclaiming a
Refrigerant                Patent           J. Todack         Hudson            6/11/91          5,022,230

Apparatus & Method
For Recovering Volatile
Refrigerants               Patent           K. Zugibe         Hudson            9/8/98           5,802,859

Method & Apparatus
For Sonic Cleaning of
Heat Exchangers            Patent Pending   K. Zugibe         Hudson            filed 8/12/98    App # 60/096,296

Apparatus & Method
For Flushing a                              K. Zugibe &
Chiller System             Patent Pending   A. Mika           Hudson            filed 8/12/98    App # 60,096,297

Apparatus & Method
For Flushing a                              C. Harkins &
Refrigeration System       Patent Pending   A. Mika           Hudson            filed 8/12/98    App # 60/096,295

GLACIER                    Trademark        N/A               Hudson            filed 3/7/97     Ser # 75/253240

ZUGIBEAST                  Trademark        N/A               Hudson            7/9/96           1,985,422

HTI                        Service Mark     N/A               Hudson            4/23/96          1,970,063
Trademark

HUDSONIC                   Service Mark     N/A               Hudson            filed 8/12/98    Ser. # 75/535,057

R-SIDE                     Service Mark     N/A               Hudson            filed 8/6/98     Ser. # 75/532,328
Trademark

REFRIGERANTSIDE            Service Mark     N/A               Hudson            filed 8/6/98     Ser. # 75/532,327
Trademark

Hudson Technologies,       Service Mark
Inc.                       Trademark        N/A               Hudson            4/23/96          1,969,986
</TABLE>

<PAGE>


               SCHEDULE OF PATENTS, TRADEMARKS, COPYRIGHTS (cont.)

<TABLE>
<CAPTION>
TITLE-NAME                 TYPE             INVENTOR          OWNER         DATE ISSUED          NUMBER
- - - ----------                 ----             --------          -----         -----------          ------ 
<S>                        <C>               <C>               <C>               <C>              <C>   
Refrigerant Journal
System                     Copyright        N/A               ESS               5/17/95          TX 4-016-447


Refrigerant Journal
System Software            Copyright        N/A               ESS               5/8/95           TXu 692-039


Facility Refrigerant
Manager Training
Manual                     Copyright        N/A               ESS               6/26/95          TX 4-060-784

Refrigerant Management
Survey                     Copyright        N/A               ESS               6/29/95          TX 4-068-366

Refrigerant
Management Plan            Copyright        N/A               ESS               5/22/95          TX 4-052-551

Refrigerant Compliance
Manager                    Copyright        N/A               ESS               11/16/93         TX 3-683-597

Refrigerant Compliance
Manager                    Trademark        N/A               ESS               Filed 9/19/96    Ser. # 75/168690

Refrigerant Journal
Software                   Trademark        N/A               ESS               10/21/97         Reg. # 2,106,923

Facility Associate         Trademark        N/A               ESS               10/21/97         Reg. # 2,106,926

Generator Associate        Trademark        N/A               ESS               10/28/97         Reg. # 2,108,829

Manifest Associate         Trademark        N/A               ESS               10/28/97         Reg. # 2,108,828

Transporter Associate      Trademark        N/A               ESS               11/18/97         Reg. # 2,113,856

</TABLE>






<PAGE>




================================================================================





                            STOCK PURCHASE AGREEMENT

                                      dated

                                 March 30, 1999


                                     between


                            HUDSON TECHNOLOGIES, INC.

                                       and

                       FLEMING US DISCOVERY OFFSHORE FUND III, L.P.





================================================================================


<PAGE>



                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                       Page


<S>      <C>                                                                                            <C>
 SECTION 1.  SALE AND PURCHASE OF PREFERRED STOCK.........................................................1

 SECTION 2.  CLOSING......................................................................................2

 SECTION 3.  DEFINITIONS..................................................................................2

 SECTION 4.  REPRESENTATIONS AND WARRANTIES OF THE COMPANY...............................................14
      4.1.   Corporate Existence, Power and Authority....................................................14
      4.2.   Capital Stock...............................................................................15
      4.3.   Subsidiaries................................................................................16
      4.4.   Business....................................................................................16
      4.5.   No Defaults or Conflicts....................................................................16
      4.6.   Disclosure Materials; Other Information.....................................................17
      4.7.   Litigation..................................................................................18
      4.8.   Taxes.......................................................................................18
      4.9.   ERISA.......................................................................................18
      4.10.  Legal Compliance............................................................................20
      4.11.  Outstanding Securities......................................................................20
      4.12.  Permits, Licenses and Approvals; Intellectual Property and Other Rights.....................20
      4.13.  Key Employees...............................................................................21
      4.14.  Properties..................................................................................21
      4.15.  Suppliers and Customers.....................................................................21
      4.16.  Environmental Compliance....................................................................22
      4.17.  No Burdensome Agreements....................................................................22
      4.18.  Offering of Shares..........................................................................23
      4.19.  SEC Reports.................................................................................23
      4.20.  Indebtedness................................................................................23
      4.21.  Use of Proceeds.............................................................................24
      4.22.  Other Names.................................................................................24
      4.23.  Brokers.....................................................................................24

 SECTION 5.  REPRESENTATIONS AND WARRANTIES OF THE PURCHASER.............................................24
      5.1.   Corporate Power and Authority...............................................................24
      5.2.   Investment Intent...........................................................................25
      5.3.   Brokers.....................................................................................25
      5.4.   Ownership of Common Stock...................................................................25

</TABLE>

                                       i
<PAGE>

<TABLE>
<CAPTION>

<S>      <C>                                                                                            <C>
 SECTION 6.  RESTRICTIONS ON TRANSFER....................................................................26

 SECTION 7.  INFORMATION AS TO THE COMPANY...............................................................26
      7.1.   Financial Information.......................................................................26
      7.2.   Communication with Accountants..............................................................28
      7.3.   Inspection..................................................................................29
      7.4.   Notices.....................................................................................29

 SECTION 8. AFFIRMATIVE COVENANTS.......................................................................30
      8.1.   Maintenance of Existence, Properties and Franchises; Compliance
             with Law; Taxes; Insurance..................................................................30
      8.2.   Office for Payment, Exchange and Registration; Location of Office;
             Notice of Change of Name or Office..........................................................31
      8.3.   Fiscal Year.................................................................................31
      8.4.   Environmental Matters.......................................................................32
      8.5.   Reservation of Shares.......................................................................33
      8.6.   Securities Exchange Act Registration........................................................33
      8.7.   Delivery of Information for Rule 144A Transactions..........................................33
      8.8.   Senior Securities...........................................................................34
      8.9.   Further Assurances..........................................................................34
      8.10.  Stockholder Approval........................................................................34
      8.11.  Shares Paid as Dividends....................................................................34

 SECTION 9.  NEGATIVE COVENANTS..........................................................................34
      9.1.   No Dilution or Impairment; No Changes in Capital Stock......................................35
      9.2.   Indebtedness................................................................................36
      9.3.   Consolidation, Merger and Sale..............................................................36
      9.4.   No Change in Business.......................................................................36
      9.5.   Restricted Payments; Investments............................................................36
      9.6.   Sale of Substantial Portion of Assets.......................................................36
      9.7.   Obligations to Affiliates...................................................................37
      9.8.   Transactions with Affiliates................................................................37
      9.9.   Liens.......................................................................................38
      9.10.  Private Placement Status....................................................................38
      9.11.  Maintenance of Public Market................................................................38
      9.12.  Actions Prior to the Closing Date...........................................................39

</TABLE>


                                       ii
<PAGE>

<TABLE>
<CAPTION>
<S>     <C>                                                                                             <C>
SECTION 10.  CONDITIONS TO PURCHASER'S OBLIGATIONS.......................................................39
      10.1.  Certificate of Amendment; Stockholders' Agreement;
             Registration Rights Agreement...............................................................39
      10.2.  Certificates for Shares.....................................................................39
      10.3.  Senior Status...............................................................................40
      10.4.  Accuracy of Representations and Warranties..................................................40
      10.5.  Compliance with Agreements..................................................................40
      10.6.  Officers=Certificates.......................................................................40
      10.7.  Proceedings.................................................................................40
      10.8.  Legality; Governmental and Other Authorization..............................................40
      10.9.  No Material Adverse Change..................................................................41
      10.10. Opinion of Counsel..........................................................................41
      10.11. Purchases of Shares.........................................................................41
      10.12. Consents....................................................................................41
      10.13. Other Documents and Opinions................................................................41

SECTION 11.  BREACH OF REPRESENTATIONS, WARRANTIES
             AND COVENANTS...............................................................................42

SECTION 12.  SPECIFIC PERFORMANCE........................................................................42

SECTION 13.  EXPENSES....................................................................................43

SECTION 14.  DIRECT PAYMENTS.............................................................................44

SECTION 15.  AMENDMENTS AND WAIVERS......................................................................45

SECTION 16.  EXCHANGE OF SHARES; CANCELLATION OF SURRENDERED SHARES; REPLACEMENT.........................45

SECTION 17.  NOTICES.....................................................................................46

SECTION 18.  MISCELLANEOUS...............................................................................46

</TABLE>


                                      iii

<PAGE>





                            STOCK PURCHASE AGREEMENT


            This STOCK PURCHASE AGREEMENT is dated as of March 30, 1999 between
Hudson Technologies, Inc., a New York corporation (the "Company"), and the
Purchaser listed on the signature page of this Agreement (the "Purchaser").


                              W I T N E S S E T H :


            WHEREAS, the Company desires to issue and sell to the Purchaser, and
the Purchaser desires to purchase from the Company, shares of the Company's
Series A Convertible Preferred Stock, par value $.01 per share (the "Series A
Convertible Preferred Stock"), upon the terms and provisions hereinafter set
forth;

            NOW, THEREFORE, in consideration of the mutual covenants and
agreements set forth herein and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties agree as
follows:


SECTION 1.  SALE AND PURCHASE OF PREFERRED STOCK

            (a) The Company agrees to sell to the Purchaser and, subject to the
terms and conditions hereof and in reliance upon the representations and
warranties of the Company contained herein or made pursuant hereto, the
Purchaser agrees to purchase from the Company at the Closing provided for in
Section 2 hereof, the number of shares of Series A Convertible Preferred Stock
set forth opposite the Purchaser's name on Schedule 1 hereto. The shares of
Series A Convertible Preferred Stock being acquired under this Agreement and by
the other Purchaser under the other Stock Purchase Agreement (as hereinafter
defined) are collectively referred to herein as the "Shares", containing rights
and privileges as more fully set forth in the Certificate of Amendment of the
Certificate of Incorporation of the Company in the form attached hereto as
Exhibit A (the "Certificate of Amendment").

            (b) The aggregate purchase price to be paid to the Company by the
Purchaser for the Shares to be purchased by the Purchaser pursuant to this
Agreement shall be the amount set forth opposite the Purchaser's name on
Schedule 1 hereto. No further payment shall be required from the Purchaser for
the Shares.

            (c) The Shares are being sold to the purchasers listed on Schedule 1
hereto (the "Purchasers") pursuant to this Agreement and the other Series A
Convertible Preferred Stock Purchase Agreement (both of such agreements
collectively, as from time to time assigned, supplemented or amended or as the
terms thereof may be waived, the "Stock Purchase Agreements"). Both Stock
Purchase Agreements shall be dated the date hereof and shall be identical except
as to the identities of the respective Purchasers. The sale of Shares to each
Purchaser under each Stock Purchase Agreement is to be a separate sale, and no
Purchaser shall have any liability under any Stock Purchase Agreement other than
the Stock Purchase Agreement to which it is a party.

<PAGE>

            (d) The Company will use the proceeds realized from the sale of the
Shares to fund the roll-out of the Depot Strategy program, fees and expenses of
the transactions contemplated hereby and for working capital purposes.


SECTION 2.  CLOSING

            (a) Subject to the terms and conditions hereof, the closing of the
purchase and sale of the Shares to be purchased by the Purchaser will be deemed
to have taken place at the offices of Morgan, Lewis & Bockius LLP, 101 Park
Avenue, New York, New York at 9:00 A.M., New York City time, on March 30, 1999,
or such other time and date as shall be mutually agreed to by the Company and
the Purchaser (the "Closing") (such time and date are herein referred to as the
"Closing Date").

            (b) Subject to the terms and conditions hereof, at the Closing (i)
the Company will deliver to the Purchaser a certificate registered in the
Purchaser's name (or the name of its nominee, if any, as specified on Schedule 1
hereto) evidencing the number of Shares set forth opposite the Purchaser's name
on Schedule 1 and (ii) upon the Purchasers receipt thereof, the Purchaser will
deliver to the Company a certified or official bank check (or wire transfer) in
an amount equal to the aggregate purchase price (as specified in Section 1(b)
hereof) for the Shares to be purchased by the Purchaser payable to the order of
the Company in federal or other immediately available funds.


SECTION 3.  DEFINITIONS

            (a) For purposes of this Agreement, the following definitions shall
apply (such definitions to be equally applicable to both the singular and plural
forms of the terms defined):

            "Affiliate", when used with respect to any Person, means (i) if such
         Person is a corporation, any officer or director thereof (other than a
         director elected pursuant to Section 4 of the Certificate of Amendment)
         and any Person which is, directly or indirectly, the beneficial owner
         (by itself or as part of any group) of more than five percent (5%) of
         any class of any equity security (within the meaning of the Securities
         Exchange Act) thereof, and, if such beneficial owner is a partnership,
         any general partner thereof, or if such beneficial owner is a


                                      -2-
<PAGE>

         corporation, any Person controlling, controlled by or under common
         control with such beneficial owner, or any officer or director of such
         beneficial owner or of any corporation occupying any such control
         relationship, (ii) if such Person is a partnership, any general or
         limited partner thereof, and (iii) any other Person which, directly or
         indirectly, controls or is controlled by or is under common control
         with such Person. For purposes of this definition, "control" (including
         the correlative terms "controlling", "controlled by" and "under common
         control with"), with respect to any Person, shall mean possession,
         directly or indirectly, of the power to direct or cause the direction
         of the management and policies of such Person, whether through the
         ownership of voting securities or by contract or otherwise. The holding
         of Shares (or of Conversion Shares obtained upon conversion of Shares),
         and the rights under any Stock Purchase Agreement or under the
         Certificate of Amendment, the Stockholders= Agreement or the
         Registration Rights Agreement (or the exercise of any such rights,
         including, without limitation, nominating a director to the Board (or
         Board committee) of the Company and/or sending an observer to Board (or
         Board committee) meetings of the Company), shall not cause a Purchaser
         to be deemed to be an "Affiliate" of the Company.

            "Affiliate Loan" means the loan made to the Company by Fredrick T.
         Zugibe, Sr., in the original principal amount of $365,000, pursuant to
         the promissory note dated February 25, 1999.

            "Agreement" means this Stock Purchase Agreement (together with
         exhibits and schedules) as from time to time assigned, supplemented or
         amended or as the terms hereof may be waived.

            "Benefit Plan" means any Plan, existing at the Closing, established
         or to which contributions have at any time been made by the Company, or
         any predecessor of any of the foregoing, or under which any employee,
         former employee or director of the Company or any beneficiary thereof
         is covered, is eligible for coverage or has benefit rights.

            ABoard" or ABoard of Directors" means with respect to any Person
         which is a corporation, a business trust or other entity, the board of
         directors or other group, however designated, which is charged with
         legal responsibility for the management of such Person, or any
         committee of such board of directors or group, however designated,
         which is authorized to exercise the power of such board or group in
         respect of the matter in question.

            "Business Day" means any day other than a Saturday, Sunday or any
         day on which banks in the location of the office of the Company
         provided for in Section 17 hereof are authorized or obligated to close.


                                      -3-
<PAGE>

            "Capitalized Lease" means any lease to which the Company is party as
         lessee, or by which it is bound, under which it leases any property
         (real, personal or mixed) from any lessor other than the Company, and
         which either is required to be capitalized in accordance with generally
         accepted accounting principles consistently applied, or, even if not so
         required to be capitalized, shall have (or have had), at the time first
         entered into, an initial term of greater than three (3) years
         (including leases of shorter duration which are or were extendible to a
         total term greater than three (3) years at the option of the lessor).
         The value of Capitalized Leases, as of the time of any determination
         thereof, shall mean the sum of the then present values, determined as
         hereinafter provided, of future obligations of lessees under then
         existing Capitalized Leases. To compute the value of any Capitalized
         Lease, the following methods shall be used, as applicable:

            (i)  values of leases required to be capitalized in accordance with
                 generally accepted accounting principles shall be computed in
                 accordance with such principles; and

            (ii) values of other leases (and values of contracts or other items
                 which this Agreement provides are to be valued as if they were
                 Capitalized Leases) shall be computed by discounting, to the
                 date of determination, at an assumed interest rate of eight
                 percent (8%) per annum, the minimum amount of future rental
                 payments that will be due under the related documentation,
                 including rental payments that may be due during extensions
                 which are at the other party's option, but excluding any
                 amounts in respect of insurance on, taxes on and/or maintenance
                 of the properties subject to such leases (provided that such
                 amounts are owed and paid only to the extent actually
                 incurred).

            "Certificate of Amendment" has the meaning set forth in Section 1(a)
hereof.

            "Closing" has the meaning set forth in Section 2(a) hereof.

            "Closing Date" has the meaning set forth in Section 2(a) hereof.

            "Code" means the Internal Revenue Code of 1986, as amended from time
to time, and the regulations and interpretations thereunder.

            "Commission" means the Securities and Exchange Commission and any
other similar or successor agency of the federal government administering the
Securities Act or the Securities Exchange Act.

            "Common Stock" means the Company's Common Stock, par value $.01 per
share, and shall also include any common stock of the Company hereafter
authorized and any capital stock of the Company of any other class hereafter
authorized which is not preferred as to dividends or assets over any other class
of capital stock of the Company or which has ordinary voting power for the
election of directors of the Company.


                                      -4-
<PAGE>

            "Company" means Hudson Technologies, Inc., a New York corporation,
its successors and assigns.

            "Consolidated" or "consolidated", when used with reference to any
financial term in this Agreement, means the aggregate for the Company of the
amounts signified by such term for all such Persons, with intercompany items
eliminated, and, with respect to net worth, after eliminating the portion of net
worth properly attributable to minority interests, if any, in the capital of any
such Person (other than in the capital of the Company) and otherwise as
determined in accordance with generally accepted accounting principles
consistently applied (except as otherwise expressly provided herein).

            "Conversion Share" or "Conversion Shares" means the shares of the
Company's Common Stock obtained or obtainable upon conversion of Shares and
shall also include any capital stock or other securities into which Conversion
Shares are changed and any capital stock or other securities resulting from or
comprising a reclassification, combination or subdivision of, or a stock
dividend on, any Conversion Shares. In the event that any Conversion Shares are
sold either in a public offering pursuant to a registration statement under the
Securities Act or pursuant to a Rule 144 Transaction, then the transferees of
such Conversion Shares shall not be entitled to any benefits under this
Agreement with respect to such Conversion Shares and such Conversion Shares
shall no longer be considered to be "Conversion Shares".

            "Designated Entity" means, in connection with the rights of any
Person holding less than thirty percent (30%), in the aggregate, of the
originally issued Shares and Conversion Shares, (i) as long as any Shares or
Conversion Shares are held by any Person identified in clause (i) or (ii) of the
definition of "Fleming Holders", Fleming Capital Management, 320 Park Avenue,
New York, NY 10022, Attention: Robert L. Burr and (ii) if no Shares or
Conversion Shares are held by a Person identified in clause (i) or (ii) of the
definition of "Fleming Holders", the entity designated by the Transferee holding
the largest number of such shares, provided, that such Transferee owns thirty
percent (30%) or more, in the aggregate, of the originally issued Shares and
Conversion Shares (in which case such Transferee shall provide notice to the
Corporation of such entity). For so long as no Shares or Conversion Shares are
held by any Person identified in clause (i) or (ii) of the definition of
"Fleming Holders" and no Person holds thirty percent (30%) or more, in the
aggregate, of the originally issued Shares and Conversion Shares, there shall be
no Designated Entity. For purposes of this definition of "Designated Entity,"
the calculation of a Person's percentage holdings of Conversion Shares shall be
determined based upon the number of Shares from which such Conversion Shares
derived.


                                      -5-
<PAGE>

            "Disclosure Material" has the meaning specified in Section 4.6(a)
hereof.

            "Environmental Laws" means all federal, state, local, foreign, civil
and criminal laws, statutes, ordinances, orders, codes, Environmental Permits,
rules, policies and regulations and common law relating to the protection of the
environment and human health or relating to the handling, use, generation,
treatment, storage, transportation or disposal of Hazardous Materials, including
but not limited to the Resource Conservation and Recovery Act of 1976, 42 U.S.C.
ss. 6901 et seq.; the Toxic Substances Control Act, 15 U.S.C. ss. 2601 et seq.;
the Comprehensive Environmental Response, Compensation and Liability Act of
1980, 42 U.S.C. ss. 9601 et seq.; the Federal Water Pollution Control Act, 33
U.S.C. ss. 1251 et seq.; the Clean Air Act, 42 U.S.C. ss. 7401 et seq.; the
Hazardous Materials Transportation Act, 49 U.S.C. ss. 1801 et seq.; the
Occupational Safety and Health Act, 29 U.S.C. ss. 651; the Federal Insecticide,
Fungicide and Rodenticide Act, 7 U.S.C. ss. 136y et seq.; and the Oil Pollution
Act of 1990, 33 U.S.C. ss. 2701 et seq., all as may be amended or superseded
from time to time.

            "Environmental Lien" has the meaning set forth in Section 4.16(d)
hereof.

            "Environmental Permits" means all permits, licenses, approvals,
authorizations or consents required by any Governmental Authority under any
applicable Environmental Law and includes any and all orders, consent orders or
binding agreements issued or entered into by a Governmental Authority under any
applicable Environmental Law.

            "ERISA" means Employee Retirement Income Security Act of 1974, as
amended.

            "ERISA Affiliate" means each "person" (as defined in Section 3(9) of
ERISA) which is under "common control" with the Company (within the meaning of
Section 414(b), (c), (m) or (o) of the Code).

            "Fleming Funds" means Fleming US Discovery Fund III, L.P. and
Fleming US Discovery Offshore Fund III, L.P.

            "Fleming Holders" means (i) the Fleming Funds, (ii) any Affiliate,
officer or employee of an Affiliate or investment fund managed by an Affiliate
of the Fleming Funds to which the Fleming Funds may transfer record and/or
beneficial ownership of the Shares or the Conversion Shares and (iii) any
transferee of Shares or Conversion Shares from a Person named in clause (i) or
(ii) hereof (provided that such transferee is consented to by the Company, such
consent not to be unreasonably withheld) other than a transferee of Shares or
Conversion Shares sold in either a public offering pursuant to a registration
statement under the Securities Act or pursuant to a Rule 144 Transaction.


                                      -6-
<PAGE>

            "Governmental Authority" means any federal, state, or local
governmental agency or authority (including regulatory authority) having
jurisdiction over the Company or any of its respective assets or businesses.

            "Guaranty" means (i) any guaranty or endorsement of the payment or
performance of, or any contingent obligation in respect of, any indebtedness or
other obligation of any other Person, (ii) any other arrangement whereby credit
is extended to one obligor (directly or indirectly) on the basis of any promise
or undertaking of another Person (a) to pay the indebtedness of such obligor,
(b) to purchase an obligation owed by such obligor, (c) to purchase or lease
assets (or to provide funds, goods or services) under circumstances that would
enable such obligor to discharge one or more of its obligations or (d) to
maintain the capital, working capital, solvency or general financial condition
of such obligor, in each case whether or not such arrangement is disclosed in
the balance sheet of such other Person or is referred to in a footnote thereto
and (iii) any liability as a general partner of a partnership in respect of
indebtedness or other obligations of such partnership; provided, however, that
the term "Guaranty" shall not include (1) endorsements for collection or deposit
in the ordinary course of business or (2) obligations of the Company which would
constitute Guaranties solely by virtue of the continuing liability of a Person
which has sold assets subject to liabilities for the liabilities which were
assumed by the Person acquiring the assets, unless such liability is required to
be carried on the consolidated balance sheet of the Company. The amount of any
Guaranty and the amount of indebtedness resulting from such Guaranty shall be
the maximum amount of the guarantor's potential obligation in respect of such
Guaranty.

            "Hazardous Materials" means any petroleum, petroleum hydrocarbons,
petroleum waste or petroleum products, underground storage tanks, asbestos or
asbestos-containing materials, pesticides, lead and lead-containing materials,
urea formaldehyde insulation and polychlorinated biphenyls (PCBs), ionizing and
non-ionizing radiation including radon and electromagnetic frequency radiation;
and any chemicals, materials, substances or wastes in any amount or
concentration which are now or hereafter "hazardous substances," "hazardous
wastes," "hazardous materials," "extremely hazardous wastes," "restricted
hazardous wastes," "toxic substances," "toxic pollutants" or words of similar
import, under any Environmental Law.

            "Indebtedness" of any Person means, without duplication, as of any
date as of which the amount thereof is to be determined, (i) all obligations of
such Person to repay money borrowed (including, without limitation, all notes
payable and drafts accepted representing extensions of credit, all obligations


                                      -7-
<PAGE>

under letters of credit, all obligations evidenced by bonds, debentures, notes
or other similar instruments and all obligations upon which interest charges are
customarily paid), (ii) all Capitalized Leases in respect of which such Person
is liable as lessee or as the guarantor of the lessee, (iii) all monetary
obligations which are secured by any Lien existing on property owned by such
Person whether or not the obligations secured thereby have been incurred or
assumed by such Person, (iv) all conditional sales contracts and similar title
retention debt instruments under which such Person is obligated to make
payments, (v) all Guaranties by such Person and (vi) all contractual obligations
(whether absolute or contingent) of such Person to repurchase goods sold and
distributed. "Indebtedness" shall not include, however, any unfunded obligations
in any employee pension benefit plan (as defined in ERISA) of the Company.

            "Investment" means, with respect to any Person, (i) any loan,
advance or extension of credit by such Person to, and any contributions to the
capital of, any other Person, (ii) any Guaranty by such Person, (iii) any
interest in any capital stock, equity interest or other securities of any other
Person, (iv) any transfer or sale of property of such Person to any other Person
other than upon full payment, in cash, or not less than the agreed sale price or
the fair value of such property, whichever is higher and (v) any commitment or
option to make an Investment if, in the case of an option, the consideration
therefor exceeds $50,000, and any of the foregoing under clauses (i) through (v)
shall be considered an Investment whether such Investment is acquired by
purchase, exchange, merger or any other method; provided, that the term
"Investment" (1) shall not include an Investment in the Company, (2) shall not
include current trade and customer accounts receivable and allowances, provided
they relate to goods furnished in the ordinary course of business and are given
in accordance with the customary practices of the Company, (3) shall not include
temporary investments of excess cash of the Company in any of the following: (A)
investment grade obligations maturing within one year of their issuance which as
to principal and interest constitute direct obligations of, or obligations
guaranteed by, the United States of America, (B) negotiable certificates of
deposit of banks or trust companies which are organized under the laws of the
United States of America or any state thereof and which have capital and surplus
of at least $500,000,000, (C) commercial paper which is rated not less than
prime-one or A-1 or their equivalents by Moody's Investor Service, Inc. or
Standard & Poor's Corporation or their successors, (D) any repurchase agreement
secured by any one or more of the foregoing and (E) money market funds primarily
investing in any of the foregoing securities and sponsored by or affiliated with
nationally recognized brokerage or investment advisory firms, and (4) shall not
include Investments of the Company existing on the date hereof and disclosed on
Schedule 3 hereto.

            ALien" means any mortgage, pledge, hypothecation, assignment,
deposit arrangement, encumbrance, lien (statutory or other), or preference,
priority or other security interest of any kind or nature whatsoever (including,


                                      -8-
<PAGE>

without limitation, any conditional sale or other title retention agreement, any
financing lease having substantially the same effect as any of the foregoing,
any assignment or other conveyance of any right to receive income and any
assignment of receivables with recourse against the assignor), any filing of a
financing statement as debtor under the Uniform Commercial Code or any similar
statute and any agreement to give or make any of the foregoing.

            "Outside Directors" means those directors on the Company's Board of
Directors at any time who are not otherwise Affiliates of or employed by the
Company.

            "Outstanding" or "outstanding" means (a) when used with reference to
the Shares or the Conversion Shares as of a particular time, all Shares or
Conversion Shares theretofore duly issued except (i) Shares or Conversion Shares
theretofore reported as lost, stolen, mutilated or destroyed or surrendered for
transfer, exchange or replacement, in respect of which new or replacement Shares
or Conversion Shares have been issued by the Company, (ii) Shares or Conversion
Shares theretofore cancelled by the Company and (iii) Shares or Conversion
Shares registered in the name of, as well as Shares or Conversion Shares owned
beneficially by, the Company, or any of its Affiliates. For purposes of the
preceding sentence, in no event shall "Affiliates" include (x) the persons which
are identified as "Purchasers" on Schedule 1 hereto or (y) any Affiliates of any
such persons.

            "Pension Plan" means any "employee pension benefit plan" as defined
in Section 3(2) of ERISA.

            "Person" or "person" means an individual, corporation, partnership,
firm, association, joint venture, trust, unincorporated organization,
government, governmental body, agency, political subdivision or other entity.

            "Plan" means any bonus, incentive compensation, deferred
compensation, pension, profit sharing, retirement, stock purchase, stock option,
stock ownership, stock appreciation rights, phantom stock, leave of absence,
layoff, vacation, day or dependent care, legal services, cafeteria, life,
health, accident, disability, workmen's compensation or other insurance,
severance, separation or other employee benefit plan, practice, policy or
arrangement of any kind, whether written or oral, or whether for the benefit of
a single individual or more than one individual including, but not limited to,
any "employee benefit plan" within the meaning of Section 3(3) of ERISA.

            "Preferred Stock" means any class of the capital stock of a
corporation (whether or not convertible into any other class of such capital
stock) which has any right, whether absolute or contingent, to


                                      -9-
<PAGE>

receive dividends or other distributions of the assets of such corporation
(including, without limitation, amounts payable in the event of the voluntary or
involuntary liquidation, dissolution or winding-up of such corporation), which
right is superior to the rights of another class of the capital stock of such
corporation. "Preferred Stock" includes, without limitation, the Series A
Convertible Preferred Stock.

            "Purchaser" means the person who accepts and agrees to the terms
hereof as indicated by such person's signature (as "the undersigned Purchaser")
on the execution page of this Agreement, together with its successors and
assigns.

            "Purchasers" has the meaning set forth in Section 1(c) hereof,
together with their respective successors and assigns.

            "Registration Rights Agreement" means the Registration Rights
Agreement, dated as of the Closing Date, among the Company and each of the
Purchasers.

            "Restricted Payment" means (i) every payment in connection with the
redemption, purchase, retirement or other acquisition by or on behalf of the
Company of any shares of the Company's capital stock (as defined below), whether
or not owned by the Company, (ii) any prepayments or repayments made on
Indebtedness of the Company, (iii) every payment to or on behalf of any
Affiliate of the Company on account of or with respect to any lease
arrangements, and (iv) every payment by or on behalf of the Company (whether as
repayment or prepayment of principal or as interest or otherwise) on or with
respect to (A) any obligation to repay money borrowed owing to any Affiliate of
the Company or (B) any obligation, to any Person, of any Affiliate of the
Company or to any other holder of shares of the Company's capital stock (as
defined below), which obligation is assumed, or is the subject of a Guaranty, by
the Company; provided, however, that the term "Restricted Payment" shall not
apply to (1) any payment in respect of capital stock of the Company to the
extent payable in shares of the capital stock of the Company, (2) any regularly
scheduled prepayment or repayment of Indebtedness, provided that such
Indebtedness being prepaid or repaid is not at the time of such prepayment or
repayment or at any prior time thereto owing to an Affiliate of the Company,
provided that regularly scheduled payments or prepayments pursuant to the
Affiliate Loan are not "Restricted Payments", (3) payments to DuPont Chemical
and Energy Operations, Inc. and E.I. DuPont de Nemours and Company in the
ordinary course of business, consistent with past practice, and not in
connection with any financing or extraordinary corporate transaction are not
"Restricted Payments", or (4) any payments, distributions or other transfers or
actions on or with respect to the Shares or the Conversion Shares or to the
Purchasers (or holders of Shares or the Conversion Shares) under the Stock
Purchase Agreements. For purposes of this definition, "capital stock" shall also
include warrants and other rights and options to acquire shares of capital stock
(whether upon exercise, conversion, exchange or otherwise).


                                      -10-
<PAGE>

            "Rule 144" means (i) Rule 144 under the Securities Act as such Rule
is in effect from time to time and (ii) any successor rule, regulation or law,
as in effect from time to time.

            "Rule 144A" means (i) Rule 144A under the Securities Act as such
Rule is in effect from time to time and (ii) any successor rule, regulation or
law, as in effect from time to time.

            ARule 144 Transaction" means a transfer of Conversion Shares (A)
complying with Rule 144 as such Rule is in effect on the date of such transfer
(but not including a sale other than pursuant to "brokers= transactions" as
defined in clauses (1) and (2) of paragraph (g) of such Rule as in effect on the
date hereof) and (B) occurring at a time when Conversion Shares are registered
pursuant to Section 12 of the Securities Exchange Act.

            "SEC Reports" has the meaning set forth in Section 4.19 hereof.

            "Securities Act" means the Securities Act of 1933, as amended, and
the rules, regulations and interpretations thereunder.

            "Securities Exchange Act" means the Securities Exchange Act of 1934,
as amended, and the rules, regulations and interpretations thereunder.

            "Series A Convertible Preferred Stock" means the Company's Series A
Convertible Preferred Stock, par value $.01 per share, which will have the
rights, powers and privileges on the Closing Date as more fully set forth in the
Certificate of Amendment.

            "Shares" has the meaning set forth in Section 1(a) hereof. In the
event that any Shares are sold either in a public offering pursuant to a
registration statement under Section 5 of the Securities Act or pursuant to a
Rule 144 Transaction, then the transferees of such Shares shall not be entitled
to any benefits under this Agreement with respect to such Shares and such Shares
shall no longer be considered to be "Shares" for purposes of any consent or
waiver provision of this Agreement.

            "Stock Purchase Agreements" has the meaning set forth in Section
1(c) hereof.


                                      -11-
<PAGE>

            "Stockholders= Agreement" means the Stockholders= Agreement, dated
as of the Closing Date, among the Company, the Purchasers and certain other
stockholders of the Company.

            "Stockholders= Meeting" means the Company's 1999 annual meeting of
stockholders.

            "Subsidiary", with respect to any Person, means any corporation,
association or other entity of which more than 50% of the total voting power of
shares of stock or other equity interests (without regard to the occurrence of
any contingency) to vote in the election of directors, managers or trustees
thereof is, at the time as of which any determination is being made, owned or
controlled, directly or indirectly, by such Person or one or more of its
Subsidiaries, or both. The term "Subsidiary" or "Subsidiaries" when used herein
without reference to any particular Person, means a Subsidiary or Subsidiaries
of the Company.

            "Tax" or "Taxes" means all federal, state, local or foreign net or
gross income, gross receipts, net proceeds, sales, use, ad valorem, value added,
franchise, bank shares, withholding, payroll, employment, excise, property,
alternative or add-on minimum, environmental or other taxes, assessments,
duties, fees, levies or other governmental charges of any nature whatsoever,
whether disputed or not, together with any interest, penalties, additions to tax
or additional amounts with respect thereto.

            "Tax Returns" means any returns, reports or statements (including
any information returns) required to be filed for purposes of a particular Tax.

            "Taxing Authority" means any governmental agency, board, bureau,
body, department or authority of any United States federal, state or local
jurisdiction, or any foreign jurisdiction, having or purporting to exercise
jurisdiction with respect to any Tax.

            "Transferees" shall mean any transferee (except for a Fleming
Holder) of Shares or Conversion Shares from a Fleming Holder. Transferees shall
not include a transferee of Shares or Conversion Shares sold in either a public
offering pursuant to a registration statement under the Securities Act or
pursuant to a Rule 144 Transaction.

            (b) For all purposes of this Agreement, except as otherwise
expressly provided or unless the context otherwise requires:

                (i) the words "herein", "hereof" and "hereunder" and other words
         of similar import refer to this Agreement as a whole and not to any
         particular Section or other subdivision;


                                      -12-
<PAGE>

                (ii) all accounting terms not otherwise defined herein have the
         meanings assigned to them in accordance with generally accepted
         accounting principles consistently applied (except as otherwise
         provided herein);

                (iii) all computations provided for herein, if any, shall be
         made in accordance with generally accepted accounting principles
         consistently applied (except as otherwise provided herein);

                (iv) any uses of the masculine, feminine or neuter gender shall
         also be deemed to include any other gender, as appropriate;

                (v) all references herein to actions by the Company, such as
         "create", "sell", "transfer", "dispose of", etc., mean such action
         whether voluntary or involuntary, by operation of law or otherwise;

                (vi) the exhibits and schedules to this Agreement shall be
         deemed a part of this Agreement;

                (vii) each of the representations and warranties of the Company
         contained in Section 4 hereof is separate and is not limited, qualified
         or modified by the existence, wording or satisfaction of any other
         representation or warranty of the Company in Section 4 hereof or
         otherwise;

                (viii) each of the covenants of the Company contained in
         Sections 7, 8 and 9 hereof or otherwise contained in any Stock Purchase
         Agreement, the Certificate of Amendment, the Stockholders= Agreement or
         the Registration Rights Agreement is separate and is not limited or
         satisfied by the existence, wording or satisfaction of any other
         covenant of the Company in Section 7, 8 or 9 hereof or otherwise; and

                (ix) all references herein (in covenants or otherwise) to any
         action(s) which are to be taken (or which are prohibited from being
         taken) by any Person or the Company shall apply to such Person or the
         Company, as the case may be, whether such action is taken directly or
         indirectly.


                                      -13-
<PAGE>

SECTION 4.  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

            The Company represents and warrants to the Purchaser as follows as
of the date hereof and as of the Closing Date:

            4.1. Corporate Existence, Power and Authority.

            (a) The Company is a corporation duly organized, validly existing
and in good standing under the laws of its jurisdiction of incorporation. The
Company is duly qualified, licensed and authorized to do business and is in good
standing in each jurisdiction in which it owns or leases any property or in
which the conduct of its business requires it to so qualify or be so licensed,
except for such jurisdictions where the failure to so qualify or be so licensed
would not have a material adverse effect on the Company's assets, properties,
liabilities, business, affairs, results of operations, condition (financial or
otherwise) or prospects.

            (b) No proceeding has been commenced looking toward the dissolution
or merger of the Company or the amendment of its certificate of incorporation
(other than the Certificate of Amendment). The Company is not in violation in
any respect of its certificate of incorporation or by-laws.

            (c) The Company has all requisite corporate power and authority to
own or to hold under lease and to operate the properties it owns or holds and to
conduct its business as now being conducted.

            (d) The Company has all requisite corporate power and authority to
execute, deliver, enter into, consummate the transactions contemplated by and
perform its obligations under (i) the Stock Purchase Agreements, including,
without limitation, the issuance by the Company of the Shares and the Conversion
Shares as contemplated herein and therein and in the Certificate of Amendment,
(ii) the Stockholders= Agreement and (iii) the Registration Rights Agreement.
The execution, delivery and performance of the Stock Purchase Agreements, the
Stockholders= Agreement and the Registration Rights Agreement by the Company
(including, without limitation, the issuance by the Company of the Shares and
the Conversion Shares as contemplated herein and therein and in the Certificate
of Amendment) have been duly authorized by all required corporate actions. The
Company has duly executed and delivered the Stock Purchase Agreements, the
Stockholders= Agreement and the Registration Rights Agreement. The Stock
Purchase Agreements, the Stockholders= Agreement and the Registration Rights
Agreement constitute the legal, valid and binding obligations of the Company
enforceable in accordance with their respective terms, subject to bankruptcy,
insolvency, reorganization, moratorium and other similar laws relating to the
rights of creditors generally.


                                      -14-
<PAGE>

            4.2. Capital Stock.

            (a) Schedule 6(a) hereto correctly and completely lists (i) the
authorized capital stock of the Company (Common Stock and Preferred Stock), (ii)
the number of designated shares of Preferred Stock in each series or class after
giving effect to the Certificate of Amendment and (iii) on the Closing Date,
after giving effect to the issuance of Shares contemplated by the Stock Purchase
Agreements, the number of shares outstanding in each series or class. All of
such outstanding shares are, or on the Closing Date will be, duly authorized,
validly issued and outstanding, fully paid and non-assessable. The shares of the
Company's Common Stock issuable upon conversion of the Series A Convertible
Preferred Stock will be, when issued in accordance with the terms of the Series
A Convertible Preferred Stock, duly authorized, validly issued, fully paid and
non-assessable. Except as provided in the Certificate of Amendment, none of the
shares of the Company's capital stock which will be outstanding at the Closing
(i) were or will be subject to preemptive rights when issued or (ii) provide the
holders thereof with any preemptive rights with respect to any issuances of
capital stock.

            (b) Schedule 6(b) hereto correctly and completely lists the number
and purpose for which such shares of the Company's Common Stock are reserved for
issuance by the Company.

            (c) Except as referred to in Schedule 6(b), there are no outstanding
options, warrants, subscriptions, rights, convertible securities or other
agreements or plans under which the Company may become obligated to issue, sell
or transfer shares of its capital stock or other securities.

            (d) Except as disclosed on Exhibit B hereto, there are and will be
no outstanding registration rights with respect to any capital stock of the
Company, which (in either case) will be outstanding on the Closing Date, or any
capital stock referred to in Section 4.2(b) or 4.2(c).

            (e) Except as disclosed on Exhibit B hereto, there are no voting
agreements, voting trusts, proxies or other agreements or understandings with
respect to the voting of any capital stock of the Company.

            (f) Except as disclosed on Exhibit B hereto, there are no
anti-dilution protections or other adjustment provisions in existence with
respect to any capital stock of the Company or any capital stock referred to in
Section 4.2(b) or 4.2(c).

            (g) The Certificate of Amendment has been duly adopted by the
Company's Board of Directors and, when filed with the Secretary of State of the
State of New York, will be fully effective as an amendment to the Company's
certificate of incorporation. Upon filing of the Certificate of Amendment with
the Secretary of State of New York, the Shares will have all of the rights,
priorities and terms set forth in the Certificate of Amendment.


                                      -15-
<PAGE>

            (h) Those Persons who own, directly or indirectly, more than 5% of
the Company's outstanding Common Stock are as follows: Kevin J. Zugibe, Thomas
P. Zugibe, Stephen P. Mandracchia, Stephen J. Cole-Hatchard, Fredrick T. Zugibe
and DuPont Chemical and Energy Operations, Inc.

            4.3. Subsidiaries.

            The Company has no Subsidiaries other than Hudson Holdings, Inc.,
Hudson Technologies Company and Environmental Support Solutions, Inc. The
Company has no Investments in any other Person, except as described in the
preceding sentence.

            4.4. Business.

            The Company sells refrigerants and provides refrigerant management
services, consisting primarily of recovery and reclamation of the refrigerants
used in commercial air conditioning and refrigeration systems, as well as
RefrigerantSide(TM) services, through which the Company performs decontamination
to remove moisture, oils and other contaminants in such systems. The Company
neither currently engages in, nor has any intention of engaging in, any other
business.

            4.5. No Defaults or Conflicts.

            (a) The Company is not in violation or default in any material
respect (and is not in default in any material respect regarding any
Indebtedness) under any indenture, agreement or instrument to which it is a
party or by which it or its properties may be bound. The Company is not in
default under any material order, writ, injunction, judgment or decree of any
court or other Governmental Authority or arbitrator(s) having jurisdiction over
the Company.

            (b) The execution, delivery and performance by the Company of the
Stock Purchase Agreements, the Stockholders= Agreement and the Registration
Rights Agreement and any of the transactions contemplated hereby or thereby
(including, without limitation, the issuance of the Shares and the Conversion
Shares as contemplated herein and therein and in the Certificate of Amendment
and the adoption of the Certificate of Amendment as an amendment to the
Company's certificate of incorporation) do not and will not (i) violate or
conflict with, with or without the giving of notice or the passage of time or
both, any provision of (A) the certificate of incorporation or by-laws of the
Company or (B) any material law, rule, regulation or order of any Governmental
Authority, or any material judgment, writ, injunction, decree, award or other
action of any court, Governmental Authority or arbitrator(s), or any agreement,
indenture or other instrument applicable to the Company or any of its
properties, (ii) result in the creation of any Lien upon any of the Company's
properties, assets or revenues, (iii) require the consent, waiver, approval,
order or authorization of, or declaration, registration, qualification or filing
with, any Person (whether or not a Governmental Authority and including, without
limitation, any shareholder approval), or (iv) cause antidilution clauses of any
outstanding securities to become operative or give rise to any preemptive
rights.


                                      -16-
<PAGE>

            4.6. Disclosure Materials; Other Information.

            (a) The Company has previously furnished to the Purchaser the
materials described on Schedule 4 hereto (the "Disclosure Material"). The
audited and unaudited financial statements referred to or contained in the
materials referred to on Schedule 4 fairly present the consolidated financial
condition of the Company as of the respective dates thereof and the consolidated
results of the operations of the Company for such periods and have been prepared
in accordance with generally accepted accounting principles consistently
applied, except that any such unaudited statements may omit notes and may be
subject to year-end adjustment.

            (b) Since September 30, 1998, except as disclosed on Exhibit B
hereto, (i) the business of the Company has been conducted in the ordinary
course and (ii) there has been no material adverse change in the assets,
properties, liabilities, business, affairs, results of operations, condition
(financial or otherwise) or prospects of the Company on a consolidated basis. As
of the Closing Date and as of the date hereof, there are no material liabilities
of the Company which would be required to be provided for in a consolidated
balance sheet of the Company as of either such date prepared in accordance with
generally accepted accounting principles consistently applied, other than
liabilities provided for in the financial statements referred to in Section
4.6(a). Since September 30, 1998, no amount or property has directly or
indirectly been declared, ordered, paid, made or set aside for any Restricted
Payment nor has any such action been agreed to.

            (c) There are no material liabilities, contingent or otherwise, of
the Company that have not been disclosed in the financial statements referred to
in Section 4.6(a) or otherwise disclosed in the Disclosure Material.

            (d) None of the Disclosure Material contained or contains a false or
misleading statement of a material fact or omits to state any material fact
necessary in order to make the statements made in such Disclosure Material, in
light of the circumstances under which they were made, not misleading.

            (e) There is no fact known to the Company which is not in the
Disclosure Material and which materially and adversely affects, or in the future
might materially and adversely affect, the assets, properties, liabilities,
business, affairs, results of operations, condition (financial or otherwise) or
prospects of the Company on a consolidated basis.


                                      -17-
<PAGE>

            4.7. Litigation.

            Except as disclosed on Exhibit B hereto, there is no action, suit,
proceeding, investigation or claim pending or, to the knowledge of the Company,
threatened in law, equity or otherwise before any court, Governmental Authority
or arbitrator which (i) questions the validity of the Stock Purchase Agreements,
the Certificate of Amendment, the Stockholders= Agreement, the Registration
Rights Agreement, the Shares or the Conversion Shares or any action taken or to
be taken pursuant hereto or thereto, (ii) might adversely affect the right,
title or interest of any Purchaser to the Shares or the Conversion Shares or
(iii) might result in a material adverse change in the assets, properties,
liabilities, business, affairs, results of operations, condition (financial or
otherwise) or prospects of the Company on a consolidated basis.

            4.8. Taxes.

            The Company has duly and timely filed all Tax Returns required to be
filed by it, and each such Tax Return correctly and completely reflects the Tax
liability and all other information required to be reported thereon. The Company
has paid or caused to be paid all Taxes (whether or not reflected on such Tax
Returns) that are due and payable. The provision for Taxes due by the Company in
the most recent financial statement included in the Disclosure Material is
sufficient for all unpaid Taxes, being current Taxes not yet due and payable, of
the Company, as of the end of the period covered by such financial statement,
and as of the Closing Date, such provision, as adjusted for the passage of time
through the Closing Date, will be sufficient for the then-accrued and unpaid
Taxes not yet due and payable of the Company. There is no dispute concerning any
Tax liability of the Company either threatened, claimed or raised by any Taxing
Authority, and the Company does not expect any Taxing Authority to assess
additional Taxes against or in respect of it for any past period. The Company
has withheld and paid, or, if not yet due for payment, set aside in accounts for
such purposes, all Taxes required to have been withheld in connection with
amounts paid or owing to any employee, creditor, independent contractor or other
third party. The Company has no liability for Taxes of any Person other than the
Company as a transferee or successor, by contract or otherwise. There are no
applicable Taxes payable by the Company in connection with the execution and
delivery of the Stock Purchase Agreements, the Stockholders= Agreement or the
Registration Rights Agreement or the issuance by the Company of the Shares or
the Conversion Shares.

            4.9. ERISA.

            (a) All Benefit Plans are listed in Exhibit B, and copies of all
documentation relating to such Benefit Plans have been delivered or made
available to the Purchasers (including copies of written Benefit Plans, written
descriptions of oral Benefit Plans, summary plan descriptions, trust agreements,
the three most recent annual returns, employee communications, and IRS
determination letters).


                                      -18-
<PAGE>

            (b) Each Benefit Plan has at all times been maintained and
administered in all material respects in accordance with its terms and with the
requirements of all applicable law, including ERISA and the Code, and each
Benefit Plan intended to qualify under Section 401(a) of the Code has at all
times since its adoption been so qualified, and each trust which forms a part of
any such plan has at all times since its adoption been tax-exempt under Section
501(a) of the Code.

            (c) No Benefit Plan has incurred any "accumulated funding
deficiency" within the meaning of Section 302 of ERISA or Section 412 of the
Code, and the "amount of unfunded benefit liabilities" within the meaning of
Section 4001(a)(18) of ERISA does not exceed zero with respect to any Benefit
Plan subject to Title IV of ERISA.

            (d) No "reportable event" (within the meaning of Section 4043 of
ERISA) has occurred with respect to any Benefit Plan or any Plan maintained by
an ERISA Affiliate since the effective date of said Section 4043.

            (e) No Benefit Plan is a multiemployer plan within the meaning of
Section 3(37) of ERISA.

            (f) No direct, contingent or secondary liability has been incurred
or is expected to be incurred by the Company under Title IV of ERISA to any
party with respect to any Benefit Plan, or with respect to any other Plan
presently or heretofore maintained or contributed to by any ERISA Affiliate.

            (g) Neither the Company nor any ERISA Affiliate has incurred any
liability for any tax imposed under Section 4971 through 4980B of the Code or
civil liability under Section 502(i) or (l) of ERISA.

            (h) No benefit under any Benefit Plan, including, without
limitation, any severance or parachute payment plan or agreement, will be
established or become accelerated, vested or payable by reason of any
transaction contemplated under this Agreement.

            (i) No Benefit Plan provides health or death benefit coverage beyond
the termination of an employee's employment, except as required by Part 6 of
Subtitle B of Title I of ERISA or Section 4980B of the Code or any State laws
requiring continuation of benefits coverage following termination of employment.

            (j) No suit, action or other litigation (excluding claims for
benefits incurred in the ordinary course of plan activities) has been brought
or, to the knowledge of the Company, threatened against or with respect to any
Benefit Plan and there are no facts or circumstances known to the Company that
could reasonably be expected to give rise to any such suit, action or other
litigation.


                                      -19-
<PAGE>

            (k) All contributions to Benefit Plans that were required to be made
under such Benefit Plans have been made, and all benefits accrued under any
unfunded Benefit Plan have been paid, accrued or otherwise adequately reserved
in accordance with generally accepted accounting principles, all of which
accruals under unfunded Benefit Plans are as disclosed in Exhibit B, and the
Company has performed all material obligations required to be performed under
all Benefit Plans.

            (l) The execution, delivery and performance of the Stock Purchase
Agreements, the Stockholders= Agreement and the Registration Rights Agreement
and the consummation of the transactions contemplated hereby and thereby
(including, without limitation, the offer, issuance and sale by the Company, and
the purchase by the Purchaser of the Shares and the Conversion Shares) will not
involve any "prohibited transaction" within the meaning of ERISA or the Code.

            4.10. Legal Compliance.

            (a) The Company has complied with all applicable laws, rules,
regulations, orders, licenses, judgments, writs, injunctions, decrees or
demands, except to the extent that failure to so comply would not materially
adversely affect the assets, properties, liabilities, business, affairs, results
of operations, condition (financial or otherwise) or prospects of the Company on
a consolidated basis.

            (b) There are no material adverse orders, judgments, writs,
injunctions or decrees of any court or administrative body, domestic or foreign,
or of any other Governmental Authority, domestic or foreign, outstanding against
the Company.

            4.11. Outstanding Securities.

            All securities (as defined in the Securities Act) of the Company
have been offered, issued, sold and delivered in compliance with, or pursuant to
exemptions from, all applicable federal and state laws, and the rules and
regulations of federal and state regulatory bodies governing the offering,
issuance, sale and delivery of securities.

            4.12. Permits, Licenses and Approvals; Intellectual Property and
Other Rights.

            Except as listed on Schedule 4.12, the Company owns or possesses and
holds free from burdensome restrictions or material conflicts with the rights of
others all franchises, licenses, permits, consents, approvals and other
authority (governmental or otherwise), patents, patent rights, trademarks,
trademark rights, trade names, trade name rights and copyrights (each of which
is listed on Exhibit B hereto), and all rights and privileges with respect to
any of the foregoing, as are necessary for the conduct of its business as now
being conducted and as proposed to be conducted. To the best of the Company's
knowledge, the Company is not in default in any material respect under any of
such franchises, licenses, permits, consents, approvals or other authority. The


                                      -20-
<PAGE>

rights of (and use by) the Company with respect to such or any other patents,
patent rights, trademarks, trademark rights, trade names, trade name rights or
copyrights do not conflict with or infringe any rights of others in a manner
which might materially and adversely affect the assets, properties, liabilities,
business, affairs, results of operations, condition (financial or otherwise) or
prospects of the Company on a consolidated basis, and no such claim of conflict
or infringement has been asserted by any Person.

            4.13. Key Employees.

            The Company has good relationships with its employees and has not
had and does not expect any substantial labor problems. The Company has no
knowledge as to any intentions of any key employee or any group of employees to
leave the employ of the Company. Except as set forth on Exhibit B hereto, the
employees of the Company are not and have never been represented by any labor
union, and no collective bargaining agreement is binding and in force against
the Company or currently being negotiated by the Company.

            4.14. Properties.

            The Company has good and marketable title to its real property, all
of which is disclosed on Exhibit B hereto, and good and marketable title to each
of its other properties. Certain real property used by the Company in the
conduct of its business is held under lease (as identified on Exhibit B hereto),
and the Company is not aware of any pending or threatened claim or action by any
lessor of any such property to terminate any such lease. All such leases are
valid and in full force and effect, and none of such leases is in default.
Except as disclosed on Schedule 5, none of the properties owned or leased by the
Company is subject to any Liens which could materially and adversely affect the
assets, properties, liabilities, business, affairs, results of operations,
condition (financial or otherwise) or prospects of the Company on a consolidated
basis.

            4.15. Suppliers and Customers.

            (a) The Company has no reason to believe that it does not have
adequate sources of supply for its business as currently conducted and as
proposed to be conducted. The Company has good relationships with all of its
material sources of supply of goods and services and does not anticipate any
material problem with any such material sources of supply.

            (b) The Company has no knowledge that the customer base of the
Company might materially decrease.


                                      -21-
<PAGE>

            4.16. Environmental Compliance.

            Except as disclosed on Schedule 4.16 hereto:

            (a) the Company has not received any verbal or written notice,
citation, subpoena, summons, complaint or other correspondence or communication
from any person with respect to the presence of any Hazardous Material at, on,
about, under, emanating to or from or affecting any of the real property
(including improvements) currently or formerly owned, leased, operated or
occupied by the Company or any predecessors thereof;

            (b) there has been no intentional or unintentional, gradual or
sudden, release, disposal or discharge upon, into, beneath or from the real
property (including improvements) currently or formerly owned, leased, operated
or occupied by the Company or any predecessors thereof that has caused or is
causing soil or groundwater contamination which under applicable Environmental
Laws could require investigation or remediation or could otherwise create a
material liability or obligation on the part of the Company;

            (c) the Company is in material compliance with all applicable
Environmental Laws and the terms and conditions of all Environmental Permits;

            (d) to the best knowledge of the Company after reasonable inquiry,
there are no Liens arising under or pursuant to any Environmental Law
("Environmental Liens") relating to any real property (including improvements
thereon) currently owned by the Company;

            (e) there are no (i) underground storage tanks, (ii) polychlorinated
biphenyl containing equipment or (iii) asbestos-containing materials at any site
currently owned, leased, operated or occupied by the Company;

            (f) the Company has not transported or arranged for the treatment,
storage, handling, disposal or transportation of any Hazardous Material to any
location which could reasonably be expected to result in material liability to
the Company; and

            (g) no real property currently or previously owned, leased, operated
or occupied by the Company or any predecessors thereof is currently listed, or
to the knowledge of the Company, proposed to be listed on the National
Priorities List, the Comprehensive Environmental Response, Compensation and
Liability Information System or on any similar state list of sites requiring
investigation or cleanup.

            4.17. No Burdensome Agreements.

            To the best of the knowledge of the Company, (i) the Company is not
a party to, or bound by (nor are any of its properties affected by), any
commitment, contract or agreement, any term of which materially adversely
affects, or in the future would reasonably be expected to materially adversely


                                      -22-
<PAGE>

affect, the assets, properties, business, affairs, results of operations,
condition (financial or otherwise) or prospects of the Company on a consolidated
basis and (ii) the Company is not a party to any contract or agreement with any
Affiliate of the Company, the terms of which are less favorable to the Company
than those which might have been obtained, at the time such contract or
agreement was entered into, from a person who was not such an Affiliate.

            4.18. Offering of Shares.

            Neither the Company nor, to the Company's knowledge, any agent or
other Person acting on its behalf, directly or indirectly, (i) offered any of
the Shares or any similar security of the Company (A) by any form of general
solicitation or general advertising (within the meaning of Regulation D under
the Securities Act) or (B) for sale to or solicited offers to buy any thereof
from, or otherwise approached or negotiated with respect thereto with, any
person other than the Purchasers and not more than fifty (50) other
institutional investors each of which the Company reasonably believed was an
"accredited investor" within the meaning of Regulation D under the Securities
Act or (ii) has done or caused to be done (or has omitted to do or to cause to
be done) any act which act (or which omission) would result in bringing the
issuance or sale of the Shares within the provisions of Section 5 of the
Securities Act or the filing, notification or reporting provisions of any state
securities laws.

            4.19. SEC Reports.

            The Company has filed all proxy statements, reports and other
documents required to be filed by it under the Securities Exchange Act. The
Company has furnished the Purchaser with copies of (i) its Annual Report on Form
10-K for the fiscal year ended December 31, 1997, (ii) its Quarterly Reports on
Form 10-Q for the fiscal quarters ended March 31, 1998, June 30, 1998 and
September 30, 1998 and (iii) its Proxy Statement dated February 16, 1999
(collectively, the "SEC Reports"). Each SEC Report was in substantial compliance
with the requirements of its respective form and none of the SEC Reports, nor
the financial statements (and the notes thereto) included in the SEC Reports, as
of their respective dates, contained any untrue statement of a material fact or
omitted to state a material fact necessary to make the statements therein, in
light of the circumstances under which they were made, not misleading.

            4.20. Indebtedness.

            Schedule 2 hereto sets forth (i) the amount of all Indebtedness of
the Company outstanding on such Closing Date, which, individually, exceeds
$50,000, (ii) any Lien with respect to such Indebtedness and (iii) a description
of each instrument or agreement governing such Indebtedness. The Company has
made available to the Purchaser a complete and correct copy of each such
instrument or agreement (including all amendments, supplements or modifications
thereto). No material default exists with respect to or under any such
Indebtedness or any material instrument or agreement relating thereto and no
event or circumstance exists with respect thereto that (with notice or the lapse
of time or both) could give rise to such a default.


                                      -23-
<PAGE>

            4.21. Use of Proceeds.

            The Company will use the proceeds realized from the sale of the
Shares to fund the roll-out of the Depot Strategy program, fees and expenses of
the transactions contemplated hereby and for working capital purposes. No
portion of such proceeds will be used for the purpose, whether immediate,
incidental or ultimate, of purchasing or carrying, within the meaning of
Regulation U of the Board of Governors of the Federal Reserve System, as amended
from time to time, any "margin stock" as defined in said Regulation U, or for
the purpose of purchasing, carrying or trading in securities within the meaning
of Regulation T of the Board of Governors of the Federal Reserve System, as
amended from time to time, or for the purpose of reducing or retiring any
indebtedness which both (i) was originally incurred to purchase any such margin
stock or other securities and (ii) was directly or indirectly secured by such
margin stock or other securities. None of the assets of the Company includes any
such "margin stock." The Company has no present intention of acquiring any such
"margin stock."

            4.22. Other Names.

            The business previously or presently conducted by the Company has
not been conducted under any corporate, trade or fictitious name, other than
those names listed on Exhibit B hereto.

            4.23. Brokers.

            Except as disclosed on Exhibit B hereto, no broker, finder or
investment banker or other party is entitled to any brokerage, finder's or other
similar fee or commission in connection with any Stock Purchase Agreement, the
Stockholders= Agreement, the Registration Rights Agreement or the Certificate of
Amendment or any of the transactions contemplated hereby or thereby, based upon
arrangements made by or on behalf of the Company or any of its Affiliates.

SECTION 5.  REPRESENTATIONS AND WARRANTIES OF THE PURCHASER

            The Purchaser represents and warrants to the Company as follows:

            5.1. Corporate Power and Authority.

            The Purchaser has all requisite power, authority and legal right to
execute, deliver, enter into, consummate the transactions contemplated by and
perform its obligations under this Agreement, the Stockholders= Agreement and
the Registration Rights Agreement. The execution, delivery and performance of


                                      -24-
<PAGE>

this Agreement, the Stockholders= Agreement and the Registration Rights
Agreement by the Purchaser have been duly authorized by all required corporate
and other actions. The Purchaser has duly executed and delivered this Agreement,
the Stockholders= Agreement and the Registration Rights Agreement, and this
Agreement, the Stockholders= Agreement and the Registration Rights Agreement
constitute the legal, valid and binding obligations of the Purchaser enforceable
against the Purchaser in accordance with their respective terms, subject to
bankruptcy, insolvency, reorganization, moratorium and other similar laws
relating to the rights of creditors generally.

            5.2. Investment Intent.

            The Purchaser is capable of evaluating the risk of its investment in
the Shares being purchased by it and is able to bear the economic risk of such
investment. The Purchaser is purchasing the Shares to be purchased by it for its
own account for investment and not with a present view to any distribution
thereof in violation of applicable securities laws; provided, however, that,
upon notice to the Company, the Purchaser may transfer record and/or beneficial
ownership of the Shares or the Conversion Shares to one or more Affiliates,
officers or employees of Affiliates or investment funds managed by Affiliates of
the Purchaser, in all cases in compliance with federal securities laws. It is
understood that the disposition of the Purchaser's Shares or Conversion Shares
shall at all times be within the Purchaser's control. If the Purchaser should in
the future decide to dispose of any of its Shares or Conversion Shares, it is
understood that it may do so only in compliance with the Securities Act,
applicable securities laws, this Agreement and the right of first offer set
forth in Section 5 of the Stockholders= Agreement. The Purchaser is an
"accredited investor" as defined in Rule 501(a) under the Securities Act.

            5.3. Brokers.

            Except as disclosed on Exhibit B hereto, no broker, finder or
investment banker or other party is entitled to any brokerage, finder's or other
similar fee or commission in connection with any Stock Purchase Agreement, the
Stockholders= Agreement, the Registration Rights Agreement or the Certificate of
Amendment or any of the transactions contemplated hereby or thereby, based upon
arrangements made by or on behalf of the Purchaser or any of its Affiliates.

            5.4 Ownership of Common Stock.

            The Purchaser currently does not own any shares of Common Stock and
will not acquire any additional shares of Common Stock in the public market. Any
future ownership by the Purchaser of shares of Common Stock shall be subject to
the limitations set forth in Section 4(a) of the Certificate of Amendment.


                                      -25-
<PAGE>

SECTION 6.  RESTRICTIONS ON TRANSFER

            The Purchaser agrees that it will not sell or otherwise dispose of
any Shares or Conversion Shares unless such Shares or Conversion Shares have
been registered under the Securities Act and, to the extent required, under any
applicable state securities laws, or pursuant to an applicable exemption from
such registration requirements. The Company may endorse on all Share
certificates a legend stating or referring to such transfer restrictions and may
place a stop order with the Company's transfer agent for the Shares.


SECTION 7.  INFORMATION AS TO THE COMPANY

            The Company covenants and agrees as follows:

            7.1. Financial Information.

            (a) The Company will maintain a system of accounting established and
administered in accordance with sound business practices to permit preparation
of financial statements in accordance with generally accepted accounting
principles consistently applied.

            (b) So long as any of the Shares remain outstanding, the Company
will deliver to (x) each holder of thirty percent (30%) or more of the Shares
and Conversion Shares and (y) a Designated Entity, the following:

                (i) as soon as practicable but not later than five (5) Business
Days after their issuance, and in any event within ninety-five (95) days after
the close of each fiscal year of the Company, (A) a consolidated balance sheet
of the Company as of the end of such fiscal year and (B) consolidated statements
of operations, stockholders= equity and cash flows of the Company for such
fiscal year, in each case for statements set forth in clause (B) setting forth
in comparative form the corresponding figures for the preceding fiscal year, all
such balance sheets and statements to be in reasonable detail and certified
without qualification by BDO Seidman, LLP or any "Big Five" independent public
accounting firm selected by the Audit Committee of the Board of Directors of the
Company and approved by the shareholders of the Company, and such statements
shall be accompanied by a management analysis of any material differences
between the results for such fiscal year and the corresponding figures for the
preceding year;

                (ii) as soon as practicable, copies (A) of all financial
statements, proxy material or reports sent to the Company's stockholders, (B) of
any public press releases and (C) of all reports or registration statements
filed with the Commission pursuant to the Securities Act or the Securities
Exchange Act;


                                      -26-
<PAGE>

                (iii) as soon as practicable and in any event within fifty (50)
days after the close of each of the first three (3) fiscal quarters of the
Company, (A) a consolidated balance sheet of the Company as of the end of such
fiscal quarter, (B) consolidated statements of operations, stockholders= equity
and cash flows of the Company for the portion of the fiscal year ended with the
end of such quarter, in each case in reasonable detail, certified by the Chief
Financial Officer, Chief Executive Officer or President of the Company and
setting forth in comparative form the corresponding figures for the comparable
period one year prior thereto (subject to normal year-end adjustments), together
with a management analysis of any material differences between such results and
the corresponding figures for such prior period and (C) a certificate of the
Chief Financial Officer, Chief Executive Officer or President of the Company
certifying the Company's compliance with the covenants contained in Section 9
(other than Section 9.12) of this Agreement;

                (iv) as soon as practicable and without duplication of any of
the above items, any other materials furnished to the Company's Board of
Directors or to holders of the Company's capital stock or Indebtedness,
including, without limitation, any compliance certificates furnished in respect
of such Indebtedness; and

                (v) as soon as practicable, such other information as may
reasonably be requested by a holder of Shares.

            (c) The Company will deliver to each member of the Company's Board
of Directors and each observer to the Company's Board of Directors appointed
pursuant to Section 2(a) of the Stockholders= Agreement, as soon as practicable
(and in the case of (iii), prior to the end of each fiscal year) and without
duplication of any of the items listed below, the following:

                (i) copies of any annual, special or interim audit reports or
management or comment letters with respect to the Company or its operations
submitted to the Company by independent public accountants;

                (ii) copies of summary financial information prepared on a
quarterly basis regarding the Company on a consolidated basis as presented to
the Company's Board of Directors and any other summary financial information
otherwise prepared;

                (iii) copies of the annual budget and business plan for the next
fiscal year;

                (iv) copies of all formal communications, from time to time, to
directors of the Company (including without limitation all information furnished
to such directors in connection with such communications), and copies of minutes
of meetings of the Company's Board of Directors (and of any executive committees
thereof);


                                      -27-
<PAGE>

                (v) notice of default under any material agreement, contract or
other instrument to which the Company is a party or by which it is bound;

                (vi) notice of any action or proceeding which has been commenced
or threatened against the Company and which, if adversely determined, would
have, individually or in the aggregate, a material adverse effect on the assets,
properties, liabilities, business, affairs, results of operations, condition
(financial or otherwise) or prospects of the Company on a consolidated basis;
and

                (vii) copies of all filings made with the Commission.

            (d) All such financial statements referred to in this Section 7.1
shall be prepared in accordance with generally accepted accounting principles
consistently applied (except for any change in accounting principles specified
in the accompanying certificate and except that any interim financial statements
may omit notes and may be subject to normal year-end adjustments).

            (e) Without limiting the foregoing provisions of this Section 7.1,
the Company agrees that, if requested in writing by any holder of Shares, it
will not deliver to such holder (until otherwise instructed by a holder of
thirty percent (30%) or more of the Shares) (x) any non-public information or
non-public materials regarding the Company (whether described in this Section
7.1 or otherwise) and (y) any information (whether or not included in clause
(x)) which such holder specifies that it does not want to receive. The Company
shall comply with any such request with respect to each such Purchaser and any
subsequent holders of Shares acquired directly or indirectly (through one or
more transfers) from such Purchaser, until instructed otherwise by the then
holder of such Shares.

            7.2. Communication with Accountants.

            The Company hereby authorizes (a) each holder of thirty percent
(30%) or more of the Shares and Conversion Shares, and (b) a Designated Entity,
to communicate directly with the independent certified public accountants for
the Company and authorizes such accountants to disclose to each such holder any
and all financial statements and any other information of any kind that they may
have with respect to the assets, properties, liabilities, business, affairs,
results of operations, condition (financial or otherwise) or prospects of the
Company, provided, that each such holder has delivered to the Company a
confidentiality agreement in form and substance reasonably acceptable to the
Company. The Company shall deliver a letter addressed to such accountants
instructing them to comply with the provisions of this Section 7.2. For purposes
of Section 7.2(a), the calculation of a Person's percentage holdings of
Conversion Shares shall be determined based upon the number of Shares from which
such Conversion Shares derived.


                                      -28-
<PAGE>

            7.3. Inspection.

            The Company will permit (a) each holder of thirty percent (30%) or
more of the Shares and Conversion Shares, (b) any authorized representative of a
holder referred to in clause (a) and (c) a Designated Entity to visit and
inspect any of the properties of the Company, to examine the Company's books and
records and to discuss with the Company's officers the Company's books and
records and the assets, properties, liabilities, business, affairs, results of
operations, condition (financial or otherwise) or prospects of the Company, all
at such reasonable times and as often as may be reasonably requested, provided,
that each such holder, representative or Designated Entity has delivered to the
Company a confidentiality agreement in form and substance reasonably acceptable
to the Company. For purposes of Section 7.3(a), the calculation of a Person's
percentage holdings of Conversion Shares shall be determined based upon the
number of Shares from which such Conversion Shares derived.

            7.4. Notices.

            The Company will give notice to all holders of Shares promptly after
it learns (other than by notice from all of such holders) of the existence of
any of the following:

            (a) any default under any Indebtedness (or under any indenture,
mortgage or other agreement relating to any Indebtedness) which Indebtedness is
in an aggregate principal amount exceeding $100,000 (or the equivalent thereof
in other currencies) in respect of which the Company is liable;

            (b) any action or proceeding which has been commenced or threatened
against the Company and which, if adversely determined, would have, individually
or in the aggregate, a material adverse effect on the assets, properties,
liabilities, business, affairs, results of operations, condition (financial or
otherwise) or prospects of the Company on a consolidated basis or the ability of
the Company to perform its obligations under the Stock Purchase Agreements, the
Stockholders= Agreement, the Registration Rights Agreement or the Certificate of
Amendment;

            (c) any dispute which may exist between the Company and any
Governmental Authority which may, individually or in the aggregate, materially
adversely affect the normal business operations of the Company or the assets,
properties, liabilities, business, affairs, results of operations, condition
(financial or otherwise) or prospects of the Company on a consolidated basis or
the ability of the Company to perform its obligations under the Stock Purchase
Agreements, the Stockholders= Agreement, the Registration Rights Agreement or
the Certificate of Amendment; and

            (d) if any (i) "reportable event" (as such term is described in
Section 4043(c) of ERISA) has occurred; or (ii) "accumulated funding deficiency"
(within the meaning of Section 412(a) of the Code) has been incurred with
respect to a Pension Plan maintained or contributed to (or required to be
maintained or contributed to) by the Company or any ERISA Affiliate that is


                                      -29-
<PAGE>

subject to the funding requirements of ERISA and the Code or an application may
be or has been made to the Secretary of the Treasury for a waiver or
modification of the minimum funding standard (including any required installment
payments) or an extension of any amortization period under Section 412 of the
Code, in each case with respect to such a Pension Plan; or (iii) Pension Plan
maintained or contributed to (or required to be maintained or contributed to) by
the Company or any ERISA Affiliate has been terminated, reorganized, petitioned
or declared insolvent under Title IV of ERISA; or (iv) Pension Plan maintained
or contributed to (or required to be maintained or contributed to) by the
Company or any ERISA Affiliate has an unfunded current liability giving rise to
a lien under ERISA or the Code; or (v) proceeding has been instituted pursuant
to Section 515 of ERISA to collect a delinquent contribution to a Pension Plan
maintained or contributed to (or required to be maintained or contributed to) by
the Company or any ERISA Affiliate; or (vi) of the Company or its ERISA
Affiliates will or may incur any liability (including any contingent or
secondary liability) to or on account of the termination or withdrawal from a
Pension Plan maintained or contributed to (or required to be maintained or
contributed to) by the Company or any ERISA Affiliate; or (vii) "prohibited
transaction" (as such term is defined in Section 406 of ERISA or Section 4975 of
the Code) in connection with an "employee benefit plan" (as defined in Section
3(3) of ERISA), maintained or contributed to (or required to be maintained or
contributed to) by the Company or any ERISA Affiliate has occurred.

Such notice (i) with respect to (a), shall specify the nature and period of
existence of any such default and what the Company proposes to do with respect
thereto and (ii) with respect to (b), (c) or (d), shall specify the nature of
any such matter referred to in such clause, what action the Company proposes to
take with respect thereto and what action any other relevant Person is taking or
proposes to take with respect thereto.


SECTION 8.  AFFIRMATIVE COVENANTS

            The Company covenants and agrees as follows:

            8.1. Maintenance of Existence, Properties and Franchises; Compliance
with Law; Taxes; Insurance.

            The Company will:

            (a) maintain its corporate existence, rights and other franchises in
full force and effect;

            (b) maintain its tangible assets in good repair, working order and
condition so far as necessary or advantageous to the proper carrying on of its
business;


                                      -30-
<PAGE>

            (c) comply with all applicable laws and with all applicable orders,
rules, rulings, certificates, licenses, regulations, demands, judgments, writs,
injunctions and decrees, provided, that such compliance shall not be necessary
so long as (i) the applicability or validity of any such law, order, rule,
ruling, certificate, license, regulation, demand, judgment, writ, injunction or
decree shall be contested in good faith by appropriate proceedings and (ii)
failure to so comply will not have a material adverse effect on the assets,
properties, liabilities, business, affairs, results of operations, condition
(financial or otherwise) or prospects of the Company on a consolidated basis;

            (d) pay promptly when due all Taxes imposed upon its properties,
assets or income and all claims or indebtedness (including, without limitation,
vendor's, workmen's and like claims) which might become a Lien upon such
properties or assets; provided, that payment of any such Tax shall not be
necessary so long as (i) the applicability or validity thereof shall be
contested in good faith by appropriate proceedings and a reserve, if
appropriate, shall have been established with respect thereto and (ii) failure
to make such payment will not have a material adverse effect on the assets,
properties, liabilities, business, affairs, results of operations, condition
(financial or otherwise) or prospects of the Company on a consolidated basis;
and

            (e) keep adequately insured, by financially sound and reputable
insurers of nationally recognized stature, all its properties of a character
customarily insured by entities similarly situated, against loss or damage of
the kinds and in amounts customarily insured against by such entities and with
such deductibles or coinsurance as is customary.

            8.2. Office for Payment, Exchange and Registration; Location of
                 Office; Notice of Change of Name or Office.

            (a) So long as any of the Shares is outstanding, the Company will
maintain an office or agency where Shares may be presented for redemption,
exchange, conversion or registration of transfer as provided in this Agreement.
Such office or agency initially shall be the office of the Company specified in
Section 17 hereof, subject to Section 8.2(b).

            (b) The Company shall give each holder of Shares at least twenty
(20) days= prior written notice of any change in (i) the name of the Company as
then in effect or (ii) the location of the office of the Company required to be
maintained under this Section 8.2.

            8.3. Fiscal Year.

            The fiscal year of the Company for tax, accounting and any other
purposes shall end on December 31 of each calendar year.


                                      -31-
<PAGE>

            8.4. Environmental Matters.

            (a) The Company shall keep and maintain any property either owned,
leased, operated or occupied by the Company free and clear of any Environmental
Liens, and the Company shall keep all such property free of Hazardous Material
contamination and in compliance with all applicable Environmental Laws and the
terms and conditions of any Environmental Permits; provided, however, that the
Company shall have the right at its cost and expense, and acting in good faith,
to contest, object or appeal by appropriate legal proceedings the validity of
any Environmental Lien. The contest, objection or appeal with respect to the
validity of an Environmental Lien shall suspend the Company's obligation to
eliminate such Environmental Lien under this paragraph pending a final
determination by appropriate administrative or judicial authority of the
legality, enforceability or status of such Environmental Lien, provided that the
following conditions are satisfied: (i) contemporaneously with the commencement
of such proceedings, the Company shall give written notice thereof to each
holder of Shares or Conversion Shares; and (ii) if under applicable law any real
property or improvements thereon are subject to sale or forfeiture for failure
to satisfy the Environmental Lien prior to a final determination of the legal
proceedings, the Company must successfully move to stay such sale, forfeiture or
foreclosure pending final determination of the Company's action; and (iii) the
Company must, if requested, furnish to the holders of Shares or Conversion
Shares a good and sufficient bond, surety, letter of credit or other security
satisfactory to such holders equal to the amount (including any interest and
penalty) secured by the Environmental Lien.

            (b) The Company will, by administrative or judicial process, enforce
the obligations of any other Person who is potentially liable for damages,
contribution or other relief in connection with any violation of Environmental
Laws, including, but not limited to, asbestos abatement, Hazardous Material
remediation or off-site or on-site disposal.

            (c) The Company will defend, indemnify and hold harmless each
current, former and future holder of Shares or Conversion Shares, and each such
holder's employees, officers, directors, stockholders, partners, agents,
representatives and assigns, from and against any liabilities, obligations,
losses, damages, penalties, actions, judgments, suits and claims, joint or
several, and any costs, disbursements and expenses (including attorneys= fees
and expenses and costs of investigation) of whatever kind or nature, known or
unknown, contingent or otherwise, arising out of or in any way related to (i)
the presence, disposal, release, removal, discharge, storage or transportation
of any Hazardous Material upon, into, from or affecting any real property
(including improvements) currently or formerly owned, leased, operated or
occupied by the Company; (ii) any judicial or administrative action, suit or
proceeding, actual or threatened, relating to Hazardous Material upon, in, from
or affecting any real property (including improvements) currently or formerly
owned, leased, operated or occupied by the Company; (iii) any violation of any
Environmental Law by the Company or any of its agents, tenants, subtenants or
invitees; (iv) the imposition of any Environmental Lien for the recovery of
costs expended in the investigation, study or remediation of any environmental
liability of (or asserted against) the Company; and (v) any liability arising
out of or related to the off-site transportation, shipment, disposal, treatment,
handling or disposal of Hazardous Materials. This Section 8.4(c) and Section
8.4(d) shall survive any payment, conversion or transfer of Shares and any
termination of this Agreement.


                                      -32-
<PAGE>

            (d) To the extent that the Company is strictly liable without regard
to fault under any Environmental Law, the Company's obligations to the holders
of Shares or Conversion Shares under any of the indemnification provisions of
the Stock Purchase Agreements shall likewise be strict without regard to fault
with respect to the violation of any Environmental Law which results in any
liability to any of the indemnified persons referred to in Section 8.4(c).

            8.5. Reservation of Shares.

            There have been reserved, and the Company shall at all times keep
reserved, free from preemptive rights, out of its authorized Common Stock a
number of shares of Common Stock sufficient to provide for the exercise of the
conversion rights provided in Section 5 of the Certificate of Amendment.

            8.6. Securities Exchange Act Registration.

            (a) The Company will maintain effective a registration statement
(containing such information and documents as the Commission shall specify and
otherwise complying with the Securities Exchange Act), under Section 12(b) or
Section 12(g), whichever is applicable, of the Securities Exchange Act, with
respect to the Common Stock of the Company, and the Company will file on time
such information, documents and reports as the Commission may require or
prescribe for companies whose stock has been registered pursuant to such Section
12(b) or Section 12(g), whichever is applicable.

            (b) The Company will, upon the request of any holder of Shares, make
whatever other filings with the Commission, or otherwise make generally
available to the public such financial and other information, as any such holder
may deem reasonably necessary or desirable in order to enable such holder to be
permitted to sell Shares pursuant to the provisions of Rule 144.

            8.7. Delivery of Information for Rule 144A Transactions.

            If a holder of Shares proposes to transfer any such Shares pursuant
to Rule 144A under the Securities Act (as in effect from time to time), the
Company agrees to provide (upon the request of such holder or the prospective
transferee) to such holder and (if requested) to the prospective transferee any
financial or other information concerning the Company which is required to be
delivered by such holder to any transferee of such Shares pursuant to such Rule
144A.


                                      -33-
<PAGE>

            8.8. Senior Securities.

            The Company shall maintain the senior status of the Series A
Convertible Preferred Stock such that it shall rank senior in all respects,
including the payment on liquidation and redemption, to all other equity
securities of the Company.

            8.9. Further Assurances.

            The Company will from time to time, upon the request of the Fleming
Holders, promptly and duly execute and deliver any and all such further
instruments and documents as the Fleming Holders may reasonably deem necessary
or desirable to obtain the full benefits of (i) the obligations of the Company
under this Agreement and (ii) the other rights and powers herein granted. Upon
the instructions from time to time of the Fleming Holders, the Company shall
execute and cause to be filed any document or filing presented to the Company in
proper form for signing or filing, in each case as the Fleming Holders may
reasonably deem necessary or desirable in light of the Company's obligations
under this Agreement, and the Company shall pay or cause to be paid any filing
or other fees in connection therewith.

            8.10. Stockholder Approval.

            The transactions contemplated hereby have been structured by the
parties to comply with the requirements for stockholder approval of the NASDAQ
Stock Market and so that further stockholder action shall not be required. If
such rules require such stockholder approval, the Company shall use its best
efforts to obtain such stockholder approval. In the event the Company fails to
obtain such stockholder approval, the terms of the transactions contemplated
hereby shall be restructured so that they (i) satisfy the requirements of the
NASDAQ Stock Market and (ii) provide the holders of Series A Preferred Stock
with the same economic benefit they would have received had such stockholder
approval been obtained.

            8.11. Shares Paid as Dividends.

            If the Company shall pay to the holders of Series A Preferred Stock
additional shares of Series A Preferred Stock as a dividend pursuant to Section
2 of the Certificate of Amendment, such additional shares, on the date of such
payment, will be duly authorized, validly issued, fully paid and non-assessable.


SECTION 9.  NEGATIVE COVENANTS

            The Company covenants and agrees that without the prior written
consent of the Fleming Holders:


                                      -34-
<PAGE>

            9.1. No Dilution or Impairment; No Changes in Capital Stock.

            The Company will not, by amendment of its certificate of
incorporation or through any consolidation, merger, reorganization, transfer of
assets, dissolution, issue or sale of securities or any other voluntary action,
avoid or seek to avoid the observance or performance of any of the terms of the
Stock Purchase Agreements, the Certificate of Amendment, the Registration Rights
Agreement or the Stockholders= Agreement. The Company will at all times in good
faith assist in the carrying out of all such terms, and in the taking of all
such action, as may be necessary or appropriate in order to protect the rights
of the holders of Shares (as such rights are set forth in the Stock Purchase
Agreements, the Certificate of Amendment, the Registration Rights Agreement and
the Stockholders= Agreement) against dilution or other impairment. Without
limiting the generality of the foregoing, the Company (a) will not issue any
shares or class or series of equity or equity-linked security, which is senior
to, or pari passu with, the Series A Convertible Preferred Stock as to dividend
payments or amounts payable in the event of liquidation or winding up of the
Company, (b) will not enter into any agreement or instrument which would
restrict or otherwise materially adversely affect the ability of the Company to
perform its obligations under the Stock Purchase Agreements, the Stockholders=
Agreement, the Registration Rights Agreement or the Certificate of Amendment,
(c) will not amend its certificate of incorporation or by-laws in any manner
which would impair or reduce the rights of the Preferred Stock, including,
without limitation, an amendment which would alter or change the powers,
privileges or preferences of the holders of the Series A Convertible Preferred
Stock (including, without limitation, changing the Certificate of Amendment
after any Shares have been called for redemption), (d) except as otherwise
provided in the Certificate of Amendment, will not redeem, repurchase or
otherwise acquire any shares of capital stock of the Company or any other rights
or options to subscribe for or purchase any capital stock of the Company or any
other securities convertible into or exchangeable for capital stock of the
Company, (e) will not permit the par value or the determined or stated value of
any shares of Common Stock receivable upon the conversion of the Shares to
exceed the amount payable therefor upon such conversion, (f) will take all such
action as may be necessary or appropriate in order that the Company may at all
times validly and legally issue duly authorized, fully paid and nonassessable
shares of the Common Stock free from all Taxes, Liens and charges with respect
to the issue thereof, upon the conversion of the Shares from time to time
outstanding, (g) will not take any action which results in any adjustment of the
current conversion price under the Certificate of Amendment if the total number
of shares of the Common Stock (or other securities) issuable after the action
upon the conversion of all of the then outstanding Shares would exceed the total
number of shares of Common Stock (or other securities) then authorized by the
Company's certificate of incorporation and available for the purpose of issuance
upon such conversion, provided, that nothing contained herein shall require the
Company to make an ultra vires issuance of Common Stock, (h) will not have any
authorized Common Stock (and will not issue any Common Stock) other than its
existing authorized Common Stock, $.01 par value per share, and (i) will not
amend its certificate of incorporation to change any terms of its Common Stock.


                                      -35-
<PAGE>

            9.2. Indebtedness.

            So long as the Fleming Holders hold at least 30% of the aggregate
number of Shares, the Company will not (i) incur Indebtedness, excluding any
Indebtedness set forth on Schedule 2 hereto, in excess of $7.5 million in
aggregate principal amount; or (ii) enter into any agreement, amendment or
modification with respect to any Indebtedness, which agreement, amendment or
modification restricts or prohibits (or was intended primarily to restrict or
prohibit) the Company from making any payments under, or otherwise performing,
the Stock Purchase Agreements.

            9.3. Consolidation, Merger and Sale.

            So long as the Fleming Holders hold at least 30% of the aggregate
number of Shares, the Company will not (and will not agree to): (a) wind up,
liquidate or dissolve its affairs; (b) sell, lease, transfer or otherwise
dispose of all or substantially all of its assets to any other Person; or (c)
effect a merger or consolidation if the Company is not the surviving corporation
from such merger or consolidation.

            9.4. No Change in Business

            The Company will not change substantially the character of its
business as conducted on the Closing Date as represented in Section 4.4 hereof
and described in the Disclosure Material.

            9.5. Restricted Payments; Investments.

            The Company will not declare or make or permit to be declared or
made any Restricted Payment or any Investment.

            9.6. Sale of Substantial Portion of Assets.

            After the Closing Date, the Company will not sell, transfer, lease
or otherwise dispose of any assets to any Person (other than assets consisting
of inventory being disposed of in the ordinary course of business and other than
assets which are, contemporaneously with such disposition (or within ninety (90)
days thereafter), being replaced with other substantially similar (or improved)
assets which are used by the Company for substantially the same purpose as the
assets being replaced) to the extent the aggregate assets so sold, transferred,
leased or disposed of:

                 (x) during the twelve (12) month period ending on the date of
            such sale, transfer, lease or disposition (i) had an aggregate book
            value equal to ten percent (10%) or more of the aggregate book value
            of the consolidated total assets of the Company at the end of the
            most recent fiscal quarter preceding such sale, transfer, lease or
            disposition or (ii) accounted for ten percent (10%) or more of the
            consolidated revenues of the Company as shown on the consolidated
            income statement of the Company for the most recent fiscal quarter
            or the then preceding fiscal year; or


                                      -36-
<PAGE>

                 (y) during the period from the Closing Date through such sale,
            transfer, lease or disposition (i) had an aggregate book value equal
            to ten percent (10%) or more of the aggregate book value of the
            consolidated total assets of the Company at the end of the most
            recent fiscal quarter preceding such sale, transfer, lease or
            disposition or (ii) accounted for ten percent (10%) or more of the
            consolidated revenues of the Company over the Company's fiscal
            periods beginning after the Closing Date and ending at the end of
            the most recent fiscal quarter as shown on the consolidated income
            statements of the Company for such periods.

            9.7. Obligations to Affiliates.

            The Company may not incur or permit to exist any of the following:

            (a) any obligation of the Company to repay money borrowed owing to
(i) any Affiliate of the Company or (ii) any other holder of shares of the
capital stock of the Company; or

            (b) any obligation, to any Person, which obligation is assumed or
guaranteed by the Company and which is an obligation of (i) any Affiliate of the
Company or (ii) any other holder of shares of the capital stock of the Company.

This Section 9.7 shall not apply to (1) any obligations under the Stock Purchase
Agreements or with respect to the Shares, (2) any loans, advances or Guarantees
referred to in clause (1) of the proviso to the definition of "Investment"
contained in Section 3 hereof, (3) Indebtedness identified on Schedule 2 hereto,
(4) the Affiliate Loan or (5) payments to DuPont Chemical and Energy Operations,
Inc. and E.I. DuPont de Nemours and Company in the ordinary course of business,
consistent with past practice, and not in connection with any financing or
extraordinary corporate transaction.

            9.8. Transactions with Affiliates.

            The Company will not, directly or indirectly, enter into any
transaction or agreement (including, without limitation, the purchase, sale,
distribution, lease or exchange of any property or the rendering of any service)
with any Affiliate of the Company, unless such transaction or agreement (a) is
approved by a majority of the Outside Directors on the Board of Directors of the
Company (provided that this Section 9.8(a) shall not apply to payments to DuPont
Chemical and Energy Operations, Inc. and E.I. DuPont de Nemours and Company in


                                      -37-
<PAGE>

the ordinary course of business, consistent with past practice, and not in
connection with any financing or extraordinary corporate transaction), and (b)
is on terms that are no less favorable to the Company than those which might be
obtained at the time of such transaction from a Person who is not such an
Affiliate; provided, however, that this Section 9.8 shall not limit, or be
applicable to, (i) employment arrangements with (and general salary and benefits
compensation for) any individual who is a full-time employee of the Company if
such arrangements are approved by a majority of the Outside Directors on the
Board of Directors of the Company; and (ii) the payment of reasonable and
customary regular fees to directors of the Company who are not employees of the
Company.

            9.9. Liens.

            So long as the Fleming Holders hold at least 30% of the aggregate
number of Shares, the Company will not create or permit to exist any Liens upon
or with respect to any of its assets or income, other than existing liens set
forth on Schedule 5 hereto, in excess of $7.5 million in the aggregate.

            9.10. Private Placement Status.

            Neither the Company nor any agent nor other Person acting on the
Company's behalf will do or cause to be done (or will omit to do or to cause to
be done) any act which act (or which omission) would result in bringing the
issuance or sale of the Shares or the Conversion Shares within the provisions of
Section 5 of the Securities Act or the filing, notification or reporting
requirements of any state securities law (other than in accordance with a
registration and qualification of Conversion Shares pursuant to the Registration
Rights Agreement).

            9.11. Maintenance of Public Market.

            The Company will not proceed with a program of acquisition of its
Common Stock, initiate a corporate reorganization or recapitalization or
undertake a consolidation or merger or authorize, consent to or take any action
which would have the effect of:

            (a) removing the Company from registration with the Commission under
the Securities Exchange Act with respect to the Company's Common Stock;

            (b) requiring the Company to make a filing under Section 13(e) of
the Securities Exchange Act;

            (c) reducing substantially or eliminating the public market for
shares of Common Stock of the Company;


                                      -38-
<PAGE>

            (d) causing a delisting of the Company's Common Stock as a National
Market Security on the NASDAQ Stock Market (unless such stock is delisted as a
result of being listed on a national securities exchange); or

            (e) if any shares of the Company's Common Stock are at any time
listed on a national exchange, causing a delisting of such stock from such
exchange.

            9.12. Actions Prior to the Closing Date.

            From the date hereof through the Closing Date, the Company will not,
(a) issue or agree to issue any capital stock or any securities exercisable for,
or convertible or exchangeable into, capital stock or (b) purchase, redeem or
otherwise acquire any of its capital stock; provided, however, that this Section
9.12 shall not limit, or be applicable to, (i) the transactions contemplated by
the Stock Purchase Agreements, including any issuance of capital stock in
connection with the transactions contemplated by Sections 9.1 and 9.11 hereof,
(ii) grants of options or issuances of Common Stock to officers, directors or
employees of the Company pursuant to the current terms of the Company's 1994 and
1997 Stock Option Plans and (iii) any grants of warrants to Wm. Sword & Company
Incorporated and Allan Benton as a result of the transactions contemplated
hereby.


SECTION 10. CONDITIONS TO PURCHASER'S OBLIGATIONS

            The Purchaser's obligation to purchase Shares hereunder is subject
to satisfaction of the following conditions at the Closing (any of which may be
waived by the Purchaser):

            10.1. Certificate of Amendment; Stockholders= Agreement;
Registration Rights Agreement.

            (a) The certificate of incorporation of the Company shall have been
duly amended by the filing of the Certificate of Amendment in the form of
Exhibit A hereto.

            (b) The Company, the Purchasers and certain other stockholders of
the Company shall have entered into a Stockholders= Agreement substantially in
the form of Exhibit C hereto.

            (c) The Company shall have entered into a Registration Rights
Agreement with the Purchasers substantially in the form of Exhibit D hereto.

            10.2. Certificates for Shares.

            The Purchaser shall concurrently receive the certificates for Shares
contemplated by Section 2(b) hereof.


                                      -39-
<PAGE>

            10.3. Senior Status.

            The Company shall have taken all of the necessary actions, including
the amendment of the appropriate existing agreements, so that the Series A
Convertible Preferred Stock shall rank senior in all respects, including the
payment on liquidation and redemption, to all other equity securities of the
Company.

            10.4. Accuracy of Representations and Warranties.

            The representations and warranties of the Company contained herein
or in any certificate or document delivered pursuant hereto shall be correct and
complete on and as of the Closing Date with the same effect as though made on
and as of the Closing Date (after giving effect to the transactions contemplated
by this Agreement).

            10.5. Compliance with Agreements.

            The Company shall have performed and complied in all material
respects with all agreements, covenants and conditions contained in the Stock
Purchase Agreements and any other document contemplated hereby or thereby which
are required to be performed or complied with by the Company on or before the
Closing Date.

            10.6. Officers= Certificates.

            The Purchaser shall have received a certificate dated the Closing
Date and signed by the President or Chief Executive Officer and by the Secretary
or the Treasurer of the Company, to the effect that the conditions of Sections
10.3, 10.4, 10.8 and 10.9 have been satisfied.

            10.7. Proceedings.

            All corporate and other proceedings in connection with the
transactions contemplated by the Stock Purchase Agreements, and all documents
incident thereto, shall be in form and substance reasonably satisfactory to the
Purchaser and its counsel, and the Purchaser shall have received all such
originals or certified or other copies of such documents as the Purchaser or its
counsel may reasonably request.

            10.8. Legality; Governmental and Other Authorization.

            The purchase of and payment for the Shares shall not be prohibited
by any law or governmental order, rule, ruling, regulation, release,
interpretation or opinion applicable to the Purchaser and shall not subject the
Purchaser to any penalty, tax, liability or other onerous condition. Any
necessary consents, approvals, licenses, permits, orders and authorizations of,
and any filings, registrations or qualifications with, any Governmental
Authority or other Person, with respect to the transactions contemplated by the


                                      -40-
<PAGE>

Stock Purchase Agreements shall have been obtained or made and shall be in full
force and effect. The Company shall have delivered to the Purchaser, upon its
reasonable request setting forth what is required, factual certificates or other
evidence, in form and substance satisfactory to the Purchaser and its counsel,
to enable the Purchaser to establish compliance with this condition.

            10.9. No Material Adverse Change.

            Except to the extent otherwise disclosed in the projected 1998
financial statements contained in the Confidential Information Memorandum, as
amended, listed on Schedule 4, there shall have been no material adverse change
in the assets, properties, liabilities, business, affairs, results of
operations, condition (financial or otherwise) or prospects of the Company on a
consolidated basis since September 30, 1998.

            10.10. Opinion of Counsel.

            The Purchaser shall have received an opinion, dated the Closing Date
and addressed to the Purchasers, of Tenzer Greenblatt LLP, counsel for the
Company, which opinion shall be in form and substance reasonably satisfactory to
the Purchaser and its counsel and shall be in the form set forth in Exhibit E
hereto.

            10.11. Purchases of Shares.

            The sale and purchase of Shares by the Fleming Funds pursuant to the
Stock Purchase Agreements between each of the Fleming Funds and the Company
shall be consummated concurrently for an aggregate purchase price of not less
than $6,500,000.

            10.12. Consents.

            The Company shall have received all consents required pursuant to
the Loan and Security Agreement, dated April 29, 1998, between the Company and
The CIT Group/Credit Finance, Inc.

            10.13. Other Documents and Opinions.

            The Purchaser shall have received such other documents and opinions,
in form and substance reasonably satisfactory to the Purchaser and its counsel,
relating to matters incident to the transactions contemplated hereby, as the
Purchaser may reasonably request.


                                      -41-
<PAGE>

SECTION 11. BREACH OF REPRESENTATIONS, WARRANTIES AND COVENANTS

            (a) The representations, warranties, covenants and agreements of the
Company and the Purchaser contained in this Agreement, the Stockholders=
Agreement, the Registration Rights Agreement or in any document or certificate
delivered pursuant hereto or thereto or in connection herewith or therewith
shall survive, and shall continue in effect following the execution and delivery
of the Stock Purchase Agreements, the Stockholders= Agreement, the Registration
Rights Agreement, the closings hereunder and thereunder, any investigation at
any time made by the Purchaser or on its behalf or by any other Person, the
issuance, sale and delivery of the Shares, any disposition thereof and any
payment, conversion or cancellation of the Shares; provided, however, that the
representations and warranties set forth in Section 4 (other than Section
4.2(a)) and Section 5 shall survive only until the second anniversary of the
Closing Date, and the provisions of Section 9 shall terminate upon conversion of
seventy percent (70%) or more of the Shares pursuant to the Certificate of
Amendment. All statements contained in any certificate or other document
delivered by or on behalf of the Company pursuant hereto shall constitute
representations and warranties by the Company hereunder.

            (b) The Company agrees to indemnify and hold the Purchaser harmless
from and against and will pay to the Purchaser the full amount of any loss,
damage, liability or expense (including amounts paid in settlement and
reasonable attorneys= fees and expenses) to the Purchaser resulting either
directly or indirectly from any breach of the representations, warranties,
covenants or agreements of the Company contained in any Stock Purchase Agreement
or in the Stockholders= Agreement, the Registration Rights Agreement or any
other document or certificate delivered pursuant hereto or thereto or in
connection herewith or therewith; provided, however, that the Company's
liability under this Section 11(b) with respect to breaches of its
representations and warranties set forth in Section 4 (other than Sections
4.2(a), 4.8, 4.9 and 4.16) shall not exceed the amount of the purchase price for
the Shares purchased by the Purchaser pursuant to this Agreement, plus
reasonable attorneys= fees and expenses incurred by the Purchaser.


SECTION 12. SPECIFIC PERFORMANCE

            The parties agree that irreparable damage will result in the event
that this Agreement is not specifically enforced, and the parties agree that any
damages available at law for a breach of this Agreement would not be an adequate
remedy. Therefore, the provisions hereof and the obligations of the parties
hereunder shall be enforceable in a court of equity, or other tribunal with
jurisdiction, by a decree of specific performance, and appropriate injunctive
relief may be applied for and granted in connection therewith. Such remedies and
all other remedies provided for in this Agreement shall, however, be cumulative
and not exclusive and shall be in addition to any other remedies which a party
may have under this Agreement or otherwise.


                                      -42-
<PAGE>

SECTION 13. EXPENSES

            (a) Whether or not the transactions herein contemplated are
consummated, the Company shall pay (i) the costs, fees and expenses of the
Company and its counsel in connection with the Stock Purchase Agreements, the
Certificate of Amendment, the Stockholders= Agreement and the Registration
Rights Agreement, other related documentation and the issuance of the Shares and
the Conversion Shares and the furnishing of all opinions by counsel for the
Company, (ii) the costs, fees and expenses of Morgan, Lewis & Bockius LLP in
connection with the Stock Purchase Agreements, the Certificate of Amendment, the
Stockholders= Agreement and the Registration Rights Agreement, other related
documentation and the transactions contemplated hereby and thereby (whether or
not a Closing occurs hereunder) and if the Closing occurs the Company will make
such payment on the Closing Date; provided, however, that such fees and expenses
shall not exceed $80,000 without the approval of the Company, (iii) the fees and
expenses of counsel to the Purchasers in connection with any amendments to or
modifications or waivers of any provisions of the Stock Purchase Agreements, the
Certificate of Amendment, the Stockholders= Agreement or the Registration Rights
Agreement, other related documentation or in connection with any other
agreements between the Purchasers and the Company and (iv) the fees and expenses
(including attorneys= fees and expenses) of any holder of Shares or Conversion
Shares in enforcing its rights against the Company if the Company defaults in
its obligations hereunder, under the Certificate of Amendment, the Stockholders=
Agreement or the Registration Rights Agreement.

            (b) In addition to all other sums due hereunder or provided for in
this Agreement, the Company shall pay to the Purchaser or its agents,
respectively, an amount sufficient to indemnify such persons (net of any Taxes
on any indemnity payments) against all reasonable costs and expenses (including
reasonable attorneys= fees and expenses and reasonable costs of investigation)
and damages and liabilities incurred by the Purchaser or its agents pursuant to
any investigation or proceeding brought by any third party against any or all of
the Company, the Purchasers, or their agents, arising out of or in connection
with the Stock Purchase Agreements, the Stockholders= Agreement, the
Registration Rights Agreement or the purchase of the Shares (or any transactions
contemplated hereby or thereby or any other document or instrument executed
herewith or therewith or pursuant hereto or thereto), whether or not the
transactions contemplated by this Agreement are consummated, which investigation
or proceeding requires the participation of the Purchaser or its agents or is
commenced or filed against the Purchaser or its agents because of the Stock
Purchase Agreements, the Stockholders= Agreement, the Registration Rights
Agreement or the purchase of the Shares (or any of the transactions contemplated
hereby or thereby or any other document or instrument executed herewith or
therewith or pursuant hereto or thereto), other than any investigation or
proceeding in which it is finally determined that there was gross negligence or
willful misconduct on the part of the Purchaser or its agents which was not
taken by them in reliance upon any of the Company's representations, warranties,
covenants or agreements in the Stock Purchase Agreements, the Stockholders=
Agreement, the Registration Rights Agreement or in any other documents or


                                      -43-
<PAGE>

instruments contemplated hereby or thereby or executed herewith or therewith or
pursuant hereto or thereto. The Company shall assume the defense, and shall have
its counsel represent the Purchaser and such agents, in connection with
investigating, defending or preparing to defend any such action, suit, claim or
proceeding (including any inquiry or investigation); provided, however, that the
Purchaser, or any such agent, shall have the right (without releasing the
Company from any of its obligations hereunder) to employ its own counsel and
either to direct its own defense or to participate in the Company's defense, but
the fees and expenses of such counsel shall be at the expense of such Person
unless (i) the employment of such counsel shall have been authorized in writing
by the Company in connection with such defense, (ii) the Company shall not have
provided its counsel to take charge of such defense or (iii) the Purchaser, or
such agent of the Purchaser, shall have concluded that there may be defenses
available to it or them which are different from or additional to those
available to the Company, then in any of such events referred to in clauses (i),
(ii) or (iii) such counsel fees and expenses (but only for one counsel for the
Purchaser and its agents) shall be borne by the Company. Any settlement of any
such action, suit, claim or proceeding shall require the consent of both the
Company and such indemnified person (neither of which shall unreasonably
withhold its consent).

            (c) The Company agrees to pay, or to cause to be paid, all
documentary, stamp and other similar Taxes levied under the laws of the United
States of America, any state or local Taxing Authority thereof or therein or any
other applicable jurisdiction in connection with the issuance and sale of the
Shares and the execution and delivery of the Stock Purchase Agreements, the
Stockholders= Agreement, the Registration Rights Agreement and any other
documents or instruments contemplated hereby or thereby and any modification of
the Certificate of Amendment, the Stockholders= Agreement, the Registration
Rights Agreement or the Stock Purchase Agreements or any such other documents or
instruments and will hold the Purchaser harmless without limitation as to time
against any and all liabilities with respect to all such Taxes.

            (d) The obligations of the Company under this Section 13 shall
survive the Closing hereunder and any termination of the Stock Purchase
Agreements.


SECTION 14. DIRECT PAYMENTS

            As long as the Purchaser or any institutional holder which is a
direct or indirect transferee (as a result of one or more transfers) from the
Purchaser shall be the holder of any Shares, the Company will make all
redemption payments, liquidation payments and other distributions by wire
transfer to the Purchaser's or such other holder's (or its nominee's) account at
any bank or trust company, notwithstanding any contrary provision herein or in
the Company's certificate of incorporation with respect to the place of payment.
The Purchaser has provided an address on Schedule 1 hereto for payments by wire
transfer, and such address may be changed for the Purchaser or any subsequent
holder by notice to the Company. All such payments shall be made in U.S. dollars
and in federal or other immediately available funds.


                                      -44-
<PAGE>

SECTION 15. AMENDMENTS AND WAIVERS

            (a) The terms and provisions of this Agreement may be amended,
waived, modified or terminated only with the written consent of the Persons
identified in clause (i) and (ii) of the definition of "Fleming Holders";
provided, however, that if no Shares or Conversion Shares are held by such
Persons, the written consent of holders of two-thirds of outstanding Shares and
Conversion Shares shall be required for any such amendment, waiver, modification
or termination.

            (b) The Company agrees that all holders of Shares and Conversion
Shares shall be notified by the Company in advance of any proposed amendment,
waiver, modification or termination, but failure to give such notice shall not
in any way affect the validity of any such amendment, waiver, modification or
termination. In addition, promptly after obtaining the written consent of the
holders as herein provided, the Company shall transmit a copy of any amendment,
waiver, modification or termination which has been adopted to all holders of
Shares and Conversion Shares then outstanding, but failure to transmit copies
shall not in any way affect the validity of any such amendment, waiver,
modification or termination.


SECTION 16. EXCHANGE OF SHARES; CANCELLATION OF SURRENDERED SHARES; REPLACEMENT

            (a) Subject to Section 6 hereof, at any time at the request of any
holder of Shares to the Company at its address provided under Section 17 hereof,
the Company at its expense (except for any transfer tax arising out of the
exchange) will issue and deliver to or upon the order of the holder in exchange
therefor a new certificate or certificates in such amount or amounts as such
holder may request in the aggregate representing the number of Shares
represented by such surrendered certificates, and registered in the name of such
holder or as such holder may direct.

            (b) Any Share certificate which is converted into Conversion Shares
in whole or in part shall be cancelled by the Company, and no new Share
certificates shall be issued in lieu of any Shares which have been converted
into Conversion Shares. The Company shall issue a new certificate with respect
to any Shares which were not converted into Conversion Shares and were
represented by a certificate which was converted in part.

            (c) Upon receipt of evidence satisfactory to the Company of the
loss, theft, destruction or mutilation of any Share certificate and, in the case
of any such loss, theft or destruction, upon delivery of an indemnity agreement
reasonably satisfactory to the Company (if requested by the Company and


                                      -45-
<PAGE>

unsecured in the case of the Purchaser or an institutional holder), or in the
case of any such mutilation, upon surrender of such Share certificate (which
surrendered Share certificate shall be cancelled by the Company), the Company
will issue a new Share certificate of like tenor in lieu of such lost, stolen,
destroyed or mutilated Share certificate, as if the lost, stolen, destroyed or
mutilated Share certificate were then surrendered for exchange.


SECTION 17. NOTICES

            All notices, requests, demands, consents and other communications
hereunder shall be in writing and shall be delivered by hand or shall be sent by
telex or telecopy (confirmed by registered, certified or overnight mail or
courier, postage and delivery charges prepaid), (i) if to the Company, to Hudson
Technologies, Inc., 275 North Middletown Road, Pearl River, New York 10965,
Attention: Stephen P. Mandracchia, with a copy to Tenzer Greenblatt LLP, 405
Lexington Avenue, New York, NY 10174, Attention: Kenneth Selterman, Esq. or (ii)
if to the Purchaser, at the address indicated on Schedule 1 hereto, with a copy
to Morgan, Lewis & Bockius LLP, 101 Park Avenue, New York, NY 10178-0060,
Attention: David W. Pollak, Esq., or at such other address as a party may from
time to time designate as its address in writing to the other party to this
Agreement. Whenever any notice is required to be given hereunder, such notice
shall be deemed given and such requirement satisfied only when such notice is
delivered or, if sent by telex or telecopier, when received.


SECTION 18. MISCELLANEOUS

            (a) The Stock Purchase Agreements, the Stockholders= Agreement, the
Registration Rights Agreement and, upon the Closing, the Certificate of
Amendment, together with any further agreements entered into by the Purchaser
and the Company at the Closing, contain the entire agreement between the
Purchaser and the Company, and supersede any prior oral or written agreements,
commitments, terms or understandings regarding the subject matter hereof.

            (b) Any provision of this Agreement which is prohibited or
unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or unenforceability without invalidating the
remaining provisions hereof, and any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such provision in any
other jurisdiction. To the extent permitted by applicable law, the parties
hereby waive any provision of law which may render any provision hereof
prohibited or unenforceable in any respect.

            (c) This Agreement shall be binding upon and inure to the benefit of
the parties hereto and their respective successors and assigns, whether so
expressed or not; provided, that (a) the Company may not assign any of its
rights, duties or obligations under this Agreement, except with the Purchaser's
written consent, and (b) the Purchaser may assign any of its rights, duties or
obligations under this Agreement to a purchaser of its Shares, provided that
such purchaser is reasonably acceptable to the Company.


                                      -46-
<PAGE>

            (d) In addition to any assignment by operation of law, the Purchaser
may assign, in whole or in part, any or all of its rights (and/or obligations)
under this Agreement to any permitted transferee of any or all of its Shares or
Conversion Shares, and (unless such assignment expressly provides otherwise) any
such assignment shall not diminish the rights the Purchaser would otherwise have
under this Agreement or with respect to any remaining Shares or Conversion
Shares held by the Purchaser.

            (e) No course of dealing and no delay on the part of any party
hereto in exercising any right, power, or remedy conferred by this Agreement
shall operate as a waiver thereof or otherwise prejudice such party's rights,
powers and remedies. No single or partial exercise of any right, power or remedy
conferred by this Agreement shall preclude any other or further exercise thereof
or the exercise of any other right, power or remedy.

            (f) The headings and captions in this Agreement are for convenience
of reference only and shall not define, limit or otherwise affect any of the
terms or provisions hereof.

            (g) This Agreement shall be governed by, and construed in accordance
with, the laws of the State of New York (other than any conflict of laws rules
which might result in the application of the laws of any other jurisdiction).

            (h) This Agreement may be executed by the parties hereto in separate
counterparts, each of which when so executed and delivered shall be an original,
but all such counterparts shall together constitute one and the same instrument,
and all signatures need not appear on any one counterpart.


                                      -47-
<PAGE>

            (i) THE COMPANY HEREBY CONSENTS TO THE JURISDICTION OF ANY STATE OR
FEDERAL COURT LOCATED WITHIN THE COUNTY OF NEW YORK, STATE OF NEW YORK AND
IRREVOCABLY AGREES THAT, SUBJECT TO THE PURCHASER'S ELECTION, ALL ACTIONS OR
PROCEEDINGS RELATING TO THIS AGREEMENT, THE CERTIFICATE OF AMENDMENT, THE
STOCKHOLDERS= AGREEMENT, THE REGISTRATION RIGHTS AGREEMENT, THE SHARES OR THE
CONVERSION SHARES MAY BE LITIGATED IN SUCH COURTS. THE COMPANY ACCEPTS FOR
ITSELF AND IN CONNECTION WITH ITS PROPERTIES, GENERALLY AND UNCONDITIONALLY, THE
NONEXCLUSIVE JURISDICTION OF THE AFORESAID COURTS AND WAIVES ANY DEFENSE OF
FORUM NON CONVENIENS, AND IRREVOCABLY AGREES TO BE BOUND BY ANY JUDGMENT
RENDERED THEREBY IN CONNECTION WITH THIS AGREEMENT, THE CERTIFICATE OF
AMENDMENT, THE STOCKHOLDERS= AGREEMENT, THE REGISTRATION RIGHTS AGREEMENT, THE
SHARES OR THE CONVERSION SHARES. A COPY OF ANY SUCH PROCESS SO SERVED SHALL BE
MAILED BY REGISTERED MAIL TO THE COMPANY AT THE ADDRESS OF THE COMPANY PROVIDED
HEREUNDER EXCEPT THAT UNLESS OTHERWISE PROVIDED BY APPLICABLE LAW, ANY FAILURE
TO MAIL SUCH COPY SHALL NOT AFFECT THE VALIDITY OF SERVICE OF PROCESS. AS AN
ALTERNATIVE TO SERVICE OF PROCESS ON SUCH AGENT (WHETHER OR NOT ANY SUCH AGENT
HAS BEEN APPOINTED), THE COMPANY HEREBY AGREES THAT SERVICE UPON IT BY MAIL
SHALL CONSTITUTE SUFFICIENT NOTICE AND SERVICE OF PROCESS. NOTHING HEREIN SHALL
AFFECT THE RIGHT TO SERVE PROCESS IN ANY OTHER MANNER PERMITTED BY LAW OR SHALL
LIMIT THE RIGHT OF THE PURCHASER TO BRING PROCEEDINGS OR OBTAIN OR ENFORCE
JUDGMENTS AGAINST THE COMPANY IN THE COURTS OF ANY OTHER JURISDICTION.

            (j) THE COMPANY AND THE PURCHASER HEREBY WAIVE THEIR RESPECTIVE
RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION BASED UPON OR ARISING OUT
OF THIS AGREEMENT, THE CERTIFICATE OF AMENDMENT, THE STOCKHOLDERS= AGREEMENT,
THE REGISTRATION RIGHTS AGREEMENT, THE SHARES OR THE CONVERSION SHARES, OR ANY
DEALINGS BETWEEN THEM RELATING TO THE SUBJECT MATTER OF THIS TRANSACTION. THE
COMPANY AND THE PURCHASER ALSO WAIVE ANY BOND OR SURETY OR SECURITY UPON SUCH
BOND WHICH MIGHT, BUT FOR THIS WAIVER, BE REQUIRED OF THE PURCHASER. THE SCOPE
OF THIS WAIVER IS INTENDED TO BE ALL-ENCOMPASSING OF ANY AND ALL DISPUTES THAT
MAY BE FILED IN ANY COURT AND THAT RELATE TO THE SUBJECT MATTER OF THIS
TRANSACTION, INCLUDING, WITHOUT LIMITATION, CONTRACT CLAIMS, TORT CLAIMS, BREACH
OF DUTY CLAIMS, AND ALL OTHER COMMON LAW AND STATUTORY CLAIMS. THE COMPANY AND
THE PURCHASER FURTHER WARRANT AND REPRESENT THAT EACH HAS REVIEWED THIS WAIVER
WITH ITS LEGAL COUNSEL, AND THAT EACH KNOWINGLY AND VOLUNTARILY WAIVES ITS JURY
TRIAL RIGHTS FOLLOWING CONSULTATION WITH LEGAL COUNSEL. THIS WAIVER IS
IRREVOCABLE, MEANING THAT IT MAY NOT BE MODIFIED EITHER ORALLY OR IN WRITING,
AND THIS WAIVER SHALL APPLY TO ANY SUBSEQUENT AMENDMENTS, RENEWALS, SUPPLEMENTS
OR MODIFICATIONS TO (OR ASSIGNMENTS OF) THIS AGREEMENT, THE CERTIFICATE OF
AMENDMENT, THE STOCKHOLDERS= AGREEMENT, THE REGISTRATION RIGHTS AGREEMENT, THE
SHARES OR THE CONVERSION SHARES. IN THE EVENT OF LITIGATION, THIS AGREEMENT MAY
BE FILED AS A WRITTEN CONSENT TO A TRIAL (WITHOUT A JURY) BY THE COURT.

                  [remainder of page intentionally left blank]



                                      -48-
<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed as of the date first above written.


                                   HUDSON TECHNOLOGIES, INC.



                                   By___________________________________________
                                     Name:  Kevin J. Zugibe
                                     Title: Chairman and Chief Executive Officer


Accepted and Agreed to as of the
date first above written by the
undersigned Purchaser:

FLEMING US DISCOVERY FUND III, L.P.

By: FLEMING US DISCOVERY
     PARTNERS, L.P.,
    its general partner

    By: FLEMING US DISCOVERY, LLC,
        its general partner


        By:______________________
           Robert L. Burr, member


<PAGE>



                                                                      Schedule 1
                                                                    to the Stock
                                                              Purchase Agreement

<TABLE>
<CAPTION>
                                            Social Security or Taxpayer             Number of Shares at               Share Purchase
     Name of Purchaser                          Identification Number                      Closing                          Price
     -----------------                      ---------------------------             -------------------               --------------
<S>                                                 <C>                                   <C>                           <C>       
Fleming US Discovery Fund                           13-3907673                            56,019                        $5,601,900
III, L.P.

Fleming US Discovery                                13-3936603                             8,981                          $898,100
Offshore Fund III, L.P.

</TABLE>


(a) address for communications:

    Fleming Capital Management
    320 Park Avenue
    New York, NY  10022
    Fax:  (212) 508-3928
    Attention: Robert L. Burr
                   Robert M. Zech


(b) address for payments by
    wire transfer:
<TABLE>
<CAPTION>

    Fleming US Discovery Fund III, L.P.        Fleming US Discovery Offshore Fund III, L.P.
<S>                                             <C>
    Chase Manhattan Bank                       Citibank, N.A.
    ABA # 021000021                            ABA # 021000089 / Chips UID# 0008 / Swift Code - CITIUS33
    A/C # 10921671                             A/C: The Bank of Bermuda Limited, Hamilton, Bermuda
    A/C: Robert Fleming Inc.                   Chips UID# 005584
    A/C # 400-470551                           Swift Code: BBDA BM HM
    A/C: Fleming US Discovery Fund III, L.P.   A/C: Fleming US Discovery Offshore Fund III, L.P.
                                               A/C # 0246769
</TABLE>

<PAGE>

                                                                      Schedule 2
                                                                    to the Stock
                                                              Purchase Agreement

                                  Indebtedness
<TABLE>
<CAPTION>


      Amount                        Liens                             Title and Date of Agreement
      ------                        -----                             ---------------------------
<S>                              <C>                             <C>
  $ 1,488,000                   All Assets                  Hudson Technologies Company and Environmental
                                                                  Support Solutions, Inc. with the CIT
                                                            Group/Credit Finance Inc./$5,000,000 Commercial
                                                              Credit Line Finance Facility, April 29, 1998

  $   671,000           Ft. Lauderdale Real Property           Turnberry Savings Bank - Promissory Note,
                                                               Florida Mortgage & Security Agreement and
                                                                Collateral Assignment of Leases & Rent,
                                                                            December 6, 1996

  $    54,000             Todak Reclamation Machines                  Lease as amended by Amendment
                                                                 September 1, 1994 Refrigerant Recovery
                                                                   Corporation of America- T.L. Yount

  $    72,000               Lab and Other Equipment            Lease Agreement-Hudson Technologies, Co. and
                                                                       Green Tree Vendor Services
                                                                            October 19, 1998

  $   872,000         Aerosol Packaging Equipment, ISO       Hudson Technologies, Inc. and The Walden Asset
                       Containers and Other Equipment         Group, Inc. Master Equipment Lease August 2,
                                                                                  1996



  $   495,000                 Hillburn Location              Lease - Ramapo Land Co., Inc. and Refrigerant
                                                                      Reclamation Industries, Inc.
                                                                              May 20, 1994

  $   279,000                 Rantoul Location                 Lease - Roeco Enterprises, Inc. and Hudson
                                                                           Technologies, Inc.
                                                                            October 1, 1997


  $    64,000                Baton Rouge Location                  Lease - Jason McCann and Hudson
                                                                          Technologies, Inc.
                                                                             April 7, 1995
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

<S>                          <C>                               <C>   
  $   131,000               Punta Gorda Location               Commercial Lease - Ellen H. Lojingeer and
                                                                      Hudson Technologies Company
                                                                             April 19, 1997

  $   256,000               Pearl River Location               Lease - Rockhill Building Corporation and
                                                                      Hudson Technologies Company
                                                                            November 9, 1998

  $    52,000                    NEVA Machine                   Commercial Loan - Barnett Bank and Hudson
                                                                           Technologies, Inc.
                                                                           September 5, 1996

  $    51,000               1999 Freightliner FL70                 Retail Installment Contract - Hudson
                                                              Technologies Co. and Gallagher Truck Center,
                                                                          Inc. March 16, 1999

  $    51,000               1999 Freightliner FL70                 Retail Installment Contract - Hudson
                                                             Technologies, Inc. and Gallagher Truck Center,
                                                                         Inc. February 19, 1999
</TABLE>


<PAGE>


                                                                      Schedule 3
                                                                    to the Stock
                                                              Purchase Agreement

                                   Investments

           - 25% interest of Environmental Support Solutions, Inc. (ESS)
           - Hudson guarantee of ESS office lease in Mesa, Arizona



<PAGE>


                                                                      Schedule 4
                                                                    to the Stock
                                                              Purchase Agreement

                               Disclosure Material

1)       Confidential Informational Memorandum, as amended
2)       Depot strategy memorandum
3)       Management presentation January 1999, January 1999, March 1999
4)       Proforma depot income statement December 31, 1998
5)       Draft Form 10-KSB for the year ended December 31, 1998
6)       Summary financial information as of March 11, 1999 and February 28,
         1997
7)       Budget for year ended December 31, 1999
8)       Detailed summary information including forecast assumptions to five
         year forecast including but not limited to, service and refrigerant
         revenues, capital expenditures, depot sales and G&A expense, number of
         employees and summary of refrigerant sales assumptions
9)       Depot sales "bottom up" model
10)      Summary depot model
11)      Proforma depot and satellite budget
12)      Revenues by customer September 30, 1998 and December 31, 1998
13)      Market data information including but not limited to, First Boston
         report, February 1999; ARI statistical profile, Air Conditioning News -
         September 22, 1997, Ducker Research Company - BSRIA, Commerce News -
         August 1, 1997, Equitable Security Report - November 1997
14)      Form 10-QSB for quarters ended March 31, 1998; June 30, 1998 and
         September 30, 1998
15)      Form 10-KSB for years ended December 31, 1997; December 31, 1996 and
         December 31, 1995
16)      Revenues by job 1998 in total and by location
17)      ZugiBeast Patent
18)      Summary of revenue by site, R-Side vs. Non R-Side - December 31, 1998
19)      List of customer references, March 8, 1999; March 9, 1999; undated
20)      Financial package delivered to Board of Directors
21)      Letter to Bob Zech and Kingston Chu dated February 26, 1999 and
         attachments 22) Refrigerant sales by site as of December 31, 1998
23)      Interoffice memorandum dated December 18, 1998 regarding DuPont
         reclamation forecast
24)      Inventory - FIFO/on hand report dated February 26, 1999
25)      Hudson consolidating roll-up financial reports for the period ended
         September 30, 1997, December 31, 1997, March 31, 1998, June 30, 1998,
         September 30, 1998 and December 31, 1998
26)      Quarterly financial results by location and in total for the years
         ended December 31, 1998 and 1997
27)      Refrigerant gross profit by major customer
28)      US refrigerant market size by automotive and HVAC/R
29)      Hudson Technologies, Inc. refrigerant sales by pounds and dollars as of
         1998 and 1997

<PAGE>

30)      Listing of officer compensation as of December 31, 1998
31)      List of personal references for officers of the Company
32)      Listing of stock options by individual for the 1994 and 1997 stock
         option plans
33)      Listing of total common stock and common stock equivalents outstanding
         at December 31, 1998
34)      Market sizing by service event
35)      Detail of sales by line of business
36)      Allocation of selling general and administrative expenses for projected
         periods
37)      Weather data cities
38)      Letter dated February 27, 1999 to David Pollack, Esq. including:
                  o Consolidated Amended Complaint, dated October 29, 1998
                  o Affidavit of William C. Komaroff in support of Defendants'
                  Motion to Dismiss, sworn to December 23, 1998, with exhibits
                  o Memorandum of Law in Support of Defendants' Motion to
                  Dismiss
                  o Plaintiffs' Memorandum of Law in Opposition to Defendants'
                  Motion to Dismiss o First Amended Verified Complaint
                  o Notice of Motion to Dismiss, dated January 11, 1999, with
                  supporting affidavits and exhibits
                  o Memorandum of Law in Support of Defendant Hudson
                  Technologies, Inc.'s Motion to Dismiss
                  o Affidavits of Gary P. Harstead, P.E. and Frank J. Getchell,
                  in opposition to Motion to Dismiss with Exhibits
                  o Memorandum of Law of Plaintiff United Water New York Inc. in
                  Opposition to Defendant Hudson Technologies, Inc.'s Motion to
                  Dismiss
                  o Reply Affidavit of Daniel Riesel in Support of Motion to
                  Dismiss
                  o Reply Memorandum of Law of Hudson Technologies, Inc. in
                  Further Support of Its Motion to Dismiss
                  o Copy of Stephen P. Mandracchia's letter dated January 31,
                  1998 to Rosol Agency, together with backup information
                  underlying the issues
                  o Summary of Monitoring Well Testing Results for R-11 and R-12
                  through January 1999
                  o Copy of September 22, 1998 letter from LeBoeuf, Lamb, Greene
                  and MacRae itemizing for settlement discussion purposes only,
                  United Water's claimed damages
39)      Letter dated March 3, 1999 to Robert Fromberg, Esq. including:
                  o Copies of Certificate of Incorporation and all amendments
                  thereto with filing receipts; and copy of original by-laws and
                  all amendments thereto
                  o Schedule of stock options issued to Officers
                  o Copies of Stock Purchase Agreement, Shareholders Agreement,
                  Standstill Agreement and Registration Agreement with DuPont
                  Chemical and Energy Operations, Inc.
                  o Schedule of outstanding stock and stock equivalents;
                  "Average Number of Shares, December 1998" (1 page))
                  o Copies of Loan and Security Agreement, General Security
                  Agreement, Guaranty from Hudson Technologies, Inc., Junior
                  Mortgage and Security Agreement, and Warrant with The CIT
                  Group/Credit Finance, Inc.
                  o Promissory Note, Florida Mortgage and Security Agreement,
                  and Collateral Assignment of Leases and Rents with Turnberry
                  Bank
                  o Note to Frederick T. Zugibe, Sr.; dated February 25, 1999
                  o Schedule of Capital Leases as of December 31, 1998 (1 page)
                  o Schedule of Operating Leases as of December 31, 1998
                  (3 pages)

<PAGE>

40)      Letter dated March 4, 1999, to Judy Walkoff, Esq. including;
                  o Copy of United Capitol Insurance Company Pollution Insurance
                    Policy for the term November 14, 1997 to November 14, 1998,
                    Policy Number SLP4001093
                  o Copy of original draft of the DEC's proposed consent order
                  o Copy of plans for proposed remediation system; dated April
                    15, 1998
                  o Copy of March 1, 1999 response by Sive, Paget & Riesel to
                    sur-reply submission of United Water
41)      Letter dated March 8, 1999, to Judy Walkoff, Esq. including;
                  o Copies of Interim Settlement Agreement, dated December 9,
                    1996
                  o Copies of the following correspondence with United Capital:
                  o United Capital letter, dated June 24, 1998
                  o Hudson Technologies, Inc. letter, dated July 28, 1998
                  o United Capital letter, dated November 9, 1998
                  o United Capital letter, dated October 9, 1998
                  o Copies of original draft proposal and cost estimate for
                    remediation system (dated September 12, 1997)
42)      Letter dated March 10, 1999, to Lisa Wager, Esq. including;
                  o Copy of Insurance Policy issued by National Insurance
                    Company of Pittsburgh; Policy Number 4866308
                  o Copies of the following Correspondence with Insurer:
                        o Hudson Technologies, Inc. letter, dated March 7, 1998
                        o A.I. Management letter, dated March 16, 1998
                        o Hudson Technologies, Inc. letter, dated March 28, 1998
                        o Hudson Technologies, Inc. letter, dated  April 21,
                          1998
                        o Hudson Technologies, Inc. letter, dated  May 19, 1998
                        o A.I. Management letter, dated June 1, 1998
                        o Hudson Technologies, Inc. letter, dated  June 2, 1998
                        o Hudson Technologies, Inc. letter, dated June 24, 1998
                        o Hudson Technologies, Inc. letter, dated  July 23,
                          1998, with attached letter of Davis Polk, dated July
                          22, 1998
                        o Hudson Technologies, Inc. letter, dated October 14,
                          1998
                        o A.I. Management letter, dated November 24, 1998
                        o Hudson Technologies, Inc. letter, dated December 2,
                          1998
                  o Copies of Press Releases and Westergaard
43)      Letter dated March 11, 1999 to Lisa Wager, Esq. including;
                        o Four page summary of restatement issues o August 9,
                          1997 letter to BDO Seidman, marked DRAFT (2 pages)
                        o Audit Committee Meeting Agenda, for July 30, 1997
                          meeting (1 page)
                        o Six pages of minutes from July 30, 1997 Audit
                          Committee meeting

<PAGE>

44)      Ramapo Well Field VOC Summaries, provided by United Water of New Jersey
         for Production Well #84, 85, 99, 100 for period January 1, 1997 through
         August 31, 1998 (13 pages)
45)      Monitoring Well Summaries for R-11 and R-12 levels, for period April
         22, 1996 and September 3, 1998 (2 pages)
46)      Barnett Bank lease
47)      Greentree Vendor lease
48)      Thomas L. Yount lease
49)      Walden leases, Schedule 1 and 2
50)      Building Leases
         a)  Hillburn, New York
         b)  Pearl River, New York
         c)  Rantoul, Illinois
         d)  Baton Rouge, Louisiana
         e)  Punta Gorda, Florida
51)      GMAC leases, 1999 Vans (2)
52)      CIT  waiver of provisions prohibiting dividends
53)      February 16, 1999 Proxy materials for March 16, 1999 Special Meeting of
         the Shareholders
54)      Letter dated March 26, 1999 to Judy Walkoff, Esq. including;
                  o Copy of written statement of Gail M. Getman
                  o Copy of Notice of Violation, dated 2/26/99 from LA. Dept. of
                    Public Safety
                  o Copy of Notice of Violation, dated 3/8/99 from LA. Dept. of 
                    Public Safety
                  o Copy of Phase II Subsurface Investigation, dated 8/31/98,
                    for 100 Brenner Drive, Congers, New York


<PAGE>


                                                                   Schedule 4.12
                                                                    to the Stock
                                                              Purchase Agreement



       Permits, Licenses & Approvals; Intellectual Property & Other Rights

All patents, patent rights, trademarks, trademark rights, trade names, trade
name rights and copyrights are subject to, and constitute collateral for, the
Loan & Security Agreement, and related documents, executed and delivered in
connection with the Line of Credit issued by The CIT Group/Credit Finance, Inc.


<PAGE>


                                                                   Schedule 4.16
                                                                    to the Stock
                                                              Purchase Agreement

                            Environmental Compliance

Paragraph 4.16 (a)
    o All facts and circumstances relating to the alleged contamination of
      Ramapo Valley Aquifer as alleged in action entitled United Water New
      York Inc. v. Hudson Technologies, Inc., Rockland County Supreme Court
      Index # 3126/98, and all proceedings, discussions and negotiations with
      the N.Y.S. DEC for a consent order relative to same.
    o Ammonia release incident at Baton Rouge Louisiana facility on January
      25, 1999, Notice of Violation dated 2/26/99, alleging violation for
      "Delayed Release Notification of Ammonia" - $1,000 proposed penalty,
      and Notice of Violation dated March 9, 1999 (received March 26, 1999)
      for alleged "Careless Handling of Anhydrous Ammonia - $7,500 proposed
      penalty.
    o Company reported vapor release of approximately 8,000 lbs. of R22 on
      4/23/98 at Hillburn, NY facility due to failed pressure relief device.
    o Phase II Subsurface Investigation Report, dated August 31, 1998, relating
      to 100 Brenner Drive, Congers, New York

Paragraph 4.16 (b)
    o    Alleged contamination of groundwater and Ramapo Valley Aquifer,
         which is the subject of the action entitled United Water New York Inc.
         v. Hudson Technologies, Inc., Rockland County Supreme Court Index #
         3126/98, and which is the subject of all proceedings, discussions and
         negotiations with the N.Y.S. DEC for a consent order relative to same.
    o    Phase II Subsurface Investigation Report, dated August 31, 1998,
         relating to 100 Brenner Drive, Congers, New York, reported detection in
         three monitoring wells of five (5) volatile organic compounds in
         groundwater at levels in excess of groundwater quality guidance values.
         None of these compounds were ever present at the facility during the
         Company's use and occupancy of the premises.

Paragraph 4.16 (c) & (d)   NA

Paragraph 4.16 (e)
    The Company is not aware of any asbestos-containing materials, except that
    one (1) storage tank located at Baton Rouge, Louisiana facility, is
    believed to have asbestos insulation.

Paragraph 4.16 (f)
     None

Paragraph 4.16 (g)         NA


<PAGE>


                                                                      Schedule 5
                                                                    to the Stock
                                                              Purchase Agreement


                                      Liens
<TABLE>
<CAPTION>

    Title and Date of Agreement                                      Affected Property                   
<S>  <C>                                                             <C>
1)  Turnberry Savings Bank - Promissory Note, Florida Mortgage       Mortgage on Ft. Lauderdale Property
    & Security Agreement and Collateral Assignment of Leases &       
    Rents -December 6, 1996                                          
2)  CIT Credit Finance - Hudson Technologies Company and             All Assets and property
    Environmental Support Solutions, Inc. with The CIT               
    Group/Credit Finance, Inc. - $5,000,000 Commercial Credit        
    Line Finance Facility  - April 29, 1998                          
3)  Lease Agreement - Hudson Technologies, Inc. and Absolute         Lab Equipment
    Financial Services, Ltd. Partnership - March 22, 1995            
4)  Open End Commercial Motor Vehicle Lease Agreement Franklin       International Rack Truck
    Equity Leasing Co. and Hudson Technologies, Inc. -               
    April 10, 1995                                                   
5)  Open End Commercial Motor Vehicle Lease Agreement Franklin       International Rack Truck
    Equity Leasing Co. and Hudson Technologies, Inc. -               
    April 10, 1995                                                   
6)  Open End Commercial Motor Vehicle Lease Agreement Franklin       International Rack Truck
    Equity Leasing Co. and Hudson Technologies, Inc. -               
    April 10, 1995                                                   
7)  Hudson Technologies, Inc. and Associates Commercial Corp.        Forklift
    (IL) June 28, 1995                                               
8)  Hudson Technologies, Inc. and Associates Commercial Corp.        Forklift
    (LA) June 28, 1995                                               
9)  Lease Agreement (NY) Hudson Technologies,  Company and           Lab Equipment
    Newcourt Financial -                                             
    April 21, 1998                                                   
10) Lease Agreement (FL) Hudson Technologies Company and             Lab Equipment
    Newcourt Financial -                                             
    April 21, 1998                                                   
11) Lease Agreement - Hudson Technologies Company and                Lab and Other Equipment
    Greentree Vendor Service -                                       
    October 19, 1998                                                 
12) Commercial Loan - Barnett Bank and Hudson Technologies,          NEVA Machine
    Inc. - September 5, 1996                                         
13) Vehicle Retail Installment Contract - Hudson                     Pickup Truck
    Technologies, Inc. and Sam Galloway Ford, Inc.                   
    August 25, 1995                                                  
14) Lease as amended by Amendment September 1, 1994 Todak Machine    
    Refrigerant Recovery Corporation of America - CA Craig II        
15) Lease as amended by Amendment September 1, 1994                  Todak Machine
    Refrigerant Recovery Corporation of America - Fred Goad          
16) Lease as amended by Amendment September 1, 1994                  Todak Machine
    Refrigerant Recovery Corporation of America - DE Schorsten       
17) Lease as amended by Amendment September 1, 1994                  Todak Machine
    Refrigerant Recovery Corporation of America - TL Yount           
18) Lease as amended by Amendment September 1, 1994                  Todak Machine
    Refrigerant Recovery Corporation of America  -                   
    Joseph Russell                                                   
19) Lease as amended by Amendment September 1, 1994                  Todak Machine
    Refrigerant Recovery Corporation of America  -                   
    William Davis                                                    
20) Retail Installment Contract - Hudson Technologies Company        
    Freightliner Box Truck and Gallagher Truck Center, Inc. -        
    March 16, 1999                                                   
21) Retail Installment Contract - Hudson Technologies Company        Freightliner Box Truck
    and Gallagher Truck Center, Inc. - February 19,1999              
                                                                     
</TABLE>                                                         

<PAGE>


                                                                      Schedule 6
                                                                    to the Stock
                                                              Purchase Agreement


                                  Capital Stock

(a)  Authorized, Issued and Outstanding

         (i)      authorized capital stock
                  20,000,000 shares of Common Stock, par value $.01
                  5,000,000 shares of Preferred Stock, par value $.01

         (ii)     number of designated shares of Preferred Stock in each series
                  or class after giving effect to the Certificate of
                  Designations

                  75,000 shares of Series A Convertible Preferred Stock

         (iii)    number of shares outstanding in each series or class after
                  giving effect to the issuance of Shares contemplated by the
                  Stock Purchase Agreements

                  5,085,820 shares of Common Stock
                  65,000 shares of Series A Convertible Preferred Stock

(b)  Common Stock Reserved for Issuance

         (i)      2,736,842 shares of Common Stock to be issued upon conversion
                  of the Series A Convertible Preferred Stock

         (ii)     2,544,529 shares of Common Stock to be issued pursuant to
                  Company Stock Option Plans and outstanding warrants (including
                  500,000 shares pursuant to future plans)


<PAGE>


                                                                   EXHIBIT B   1
                                                                    To the Stock
                                                              Purchase Agreement

1.       Paragraph 4.2 (d)
         Registration rights were granted by the Company pursuant to and as
         provided in the Registration Agreement between DuPont Chemical and
         Energy Operations, Inc, E.I. Dupont de Nemours & Company and Hudson
         Technologies, Inc.; dated 1/29/97.

2.       Paragraph 4.2 (e)
         An agreement with respect to the voting of capital stock of the Company
         was made pursuant to and as provided in the Shareholders' Agreement and
         Standstill Agreement, each dated 1/29/97, between DuPont Chemical and
         Energy Operations, Inc., E.I. Dupont de Nemours & Company and Hudson
         Technologies, Inc.

3.       Paragraph 4.2 (f)
         Certain anti-dilution or other adjustment provisions were granted
         pursuant to and as provided in the Stock Purchase Agreement,
         Shareholders' Agreement, Standstill Agreement and Registration
         Agreement, each dated 1/29/97 between DuPont Chemical and Energy
         Operations, Inc., E.I. Dupont de Nemours & Company and Hudson
         Technologies, Inc.

4.       Paragraph 4.6 (b)
         (i)      a.  Sale of 75% ownership of ESS on 3/19/99
                  b.  The Affliliate Loan
         (ii) Except to the extent otherwise disclosed in the projected 1998
         financial statements contained in the Confidential Information
         Memorandum, as amended (Item 1 to Schedule 4.)

5.       Paragraph 4.7
         (i)  None
         (ii) None
         A)   In re Hudson Technologies, Inc. Securities Litigation, 98 Civ.
              1616 (JFK), pending in United States District Court, Southern
              District of New York - Defendant's motion to dismiss consolidated
              complaint is sub judice
         B)   United Water New York Inc. v. Hudson Technologies, Inc., Rockland
              County Supreme Court Index No. 3126/98 - Defendant's motion to
              dismiss certain causes of action in amended complaint is sub
              judice
         C)   BNY Financial Corporation v. Hudson Technologies Inc., N.Y. County
              Supreme Court Index #602203/98 - currently in discovery
         D)   Proceedings, discussions and negotiations with the NYSDEC for a
              protective order relative to Alleged contamination of groundwater
              and Ramapo Valley Aquifer, which is the subject of "B)" above

<PAGE>


                                                                   EXHIBIT B   2
                                                                    To the Stock
                                                              Purchase Agreement


         E)   Notice of Alleged Safety or Health Hazards, dated 2/3/99, received
              from Occupational Safety and Health Administration regarding
              Hillburn, NY facility. Notice issued in response to a complaint
              from an unnamed party, believed to be a former employee. A follow
              up meeting at the facility took place on March 26, 1999 indicating
              that a formal report will be received within two weeks. Verbal
              comments from representative identified approx. 10-12 primarily
              housekeeping and training items, all of which have been fully or
              partially addressed, which was so noted by representative at
              meeting.

6.       Paragraph 4.9
         (a)  Company Health & Dental Insurance Plans issued by, respectively,
              the New England and Met Life; Hudson Technologies, Inc. 401 (K)
              through M & T Bank Hudson Technologies, Inc. 1994 & 1997 Stock
              Options Plans Hudson Technologies, Inc. Flexible Benefit Plan,
              including Dependent Care Assistance Plan and Medical Reimbursement
              Plan
         (k)  None

7.       Paragraph 4.12
         a.   EPA Certified Reclaimer pursuant to 40 CFR Part 82
         b.   Certified Reclaimer under Air Conditioning and Refrigeration
              Institute ("ARI") Certified Reclaimer Program
         c.   State Contractor Licenses in States of California and Nevada
         d.   New York State Waste Hauler Permit and Connecticut Waste Hauler
              Permit, plus soth other and various local permits as applicable
         e.   License Agreement with ARI for use of ARI logo
         f.   License to use DuPont and SUVA trademarks pursuant to Segment
              Marketer Agreement with DuPont
         g.   patents, trademarks, and copyrights as listed on attached Schedule
              of Patents, Trademarks and Copyrights

8.       Paragraph 4.13 - NONE

9.       Paragraph 4.14
         Real Property Owned:
         -    3200 S.E. 14th Ave., Ft. Lauderdale, Florida
         -    Leased Real Property:
         -    25 Torne Valley Road, Hillburn, New York
         -    One Brenner Drive, Congers, New York
         -    896 W. Champaign Street, Rantoul, Illinois
         -    1197 Airline Highway, Baton Rouge, La.
         -    2720 Westport Road, Charlotte, North Carolina
         -    5474 Williamsburg Drive, Punta Gorda, Florida
         -    3930 Stoney Brook, Houston, TX
         -    1402 20th Street, N.W., Suite #14, Auburn, WA

<PAGE>

                                                                   EXHIBIT B   3
                                                                    To the Stock
                                                              Purchase Agreement


10.      Paragraph 4.22

         a.   Former names: Refrigerant Reclamation Industries, Inc. Refrigerant
              Recovery Corporation of America, Inc. Refrigerant Reclamation
              Corporation of America, Inc. Hudson Technologies of TN, Inc. GRR
              Co., Inc., d/b/a Golden Refrigerant HT Holdings, Inc.
         b.   Fictitious names: Hudson Technologies of New York Hudson
              Technologies of Tennessee Hudson Technologies Company of Tennessee

11.      Paragraph 4.23 & 5.3
         a.   Wm. Sword & Company Incorporated




<PAGE>

                                                                   EXHIBIT B   4
                                                                    To the Stock
                                                              Purchase Agreement


                   SCHEDULE OF PATENTS, TRADEMARKS, COPYRIGHTS

<TABLE>
<CAPTION>

TITLE-NAME                 TYPE             INVENTOR          OWNER             DATE ISSUED      NUMBER
- - - ----------                 ----             --------          -----             -----------      ------
<S>                         <C>                <C>            <C>                  <C>              <C> 
Method & Apparatus
for Refrigerant
Reclamation                Patent           K. Zugibe         Hudson            1/3/95           5,377,499

Hydraulic System
for Recovering
Refrigerants               Patent           K. Zugibe         Hudson            4/2/96           5,502,974

Method & Apparatus
for Reclaiming a
Refrigerant                Patent           J. Todack         Hudson            6/11/91          5,022,230

Apparatus & Method
For Recovering Volatile
Refrigerants               Patent           K. Zugibe         Hudson            9/8/98           5,802,859

Method & Apparatus
For Sonic Cleaning of
Heat Exchangers            Patent Pending   K. Zugibe         Hudson            filed 8/12/98    App #60/096,296

Apparatus & Method
For Flushing a                              K. Zugibe &
Chiller System             Patent Pending   A. Mika           Hudson            filed 8/12/98    App #60,096,297

Apparatus & Method
For Flushing a                              C. Harkins &
Refrigeration System       Patent Pending   A. Mika           Hudson            filed 8/12/98    App #60/096,295

GLACIER                    Trademark        N/A               Hudson            filed 3/7/97     Ser #75/253240

ZUGIBEAST                  Trademark        N/A               Hudson            7/9/96           1,985,422

HTI                        Service Mark     N/A               Hudson            4/23/96          1,970,063
Trademark

HUDSONIC                   Service Mark     N/A               Hudson            filed 8/12/98    Ser. #75/535,057

R-SIDE                     Service Mark     N/A               Hudson            filed 8/6/98     Ser. #75/532,328
Trademark

REFRIGERANTSIDE            Service Mark     N/A               Hudson            filed 8/6/98     Ser. #75/532,327
Trademark

Hudson Technologies,       Service Mark
Inc.                       Trademark        N/A               Hudson            4/23/96          1,969,986

</TABLE>



<PAGE>


                                                                   EXHIBIT B   5
                                                                    To the Stock
                                                              Purchase Agreement


               SCHEDULE OF PATENTS, TRADEMARKS, COPYRIGHTS (cont.)


<TABLE>
<CAPTION>

TITLE-NAME                 TYPE             INVENTOR          OWNER             DATE ISSUED      NUMBER
- - - ----------                 ----             --------          -----             -----------      ------
<S>                         <C>                <C>            <C>                  <C>              <C> 
Refrigerant Journal
System                     Copyright        N/A               ESS               5/17/95          TX 4-016-447


Refrigerant Journal
System Software            Copyright        N/A               ESS               5/8/95           TX 692-039


Facility Refrigerant
Manager Training
Manual                     Copyright        N/A               ESS               6/26/95          TX 4-060-784

Refrigerant Management
Survey                     Copyright        N/A               ESS               6/29/95          TX 4-068-366

Refrigerant
Management Plan            Copyright        N/A               ESS               5/22/95          TX 4-052-551

Refrigerant Compliance
Manager                    Copyright        N/A               ESS               11/16/93         TX 3-683-597

Refrigerant Compliance
Manager                    Trademark        N/A               ESS               Filed 9/19/96    Ser. #75/168690

Refrigerant Journal
Software                   Trademark        N/A               ESS               10/21/97         Reg. #2,106,923

Facility Associate         Trademark        N/A               ESS               10/21/97         Reg. #2,106,926

Generator Associate        Trademark        N/A               ESS               10/28/97         Reg. #2,108,829

Manifest Associate         Trademark        N/A               ESS               10/28/97         Reg. #2,108,828

Transporter Associate      Trademark        N/A               ESS               11/18/97         Reg. #2,113,856

</TABLE>





<PAGE>

                            CERTIFICATE OF AMENDMENT
                                     OF THE
                          CERTIFICATE OF INCORPORATION
                                       OF
                            HUDSON TECHNOLOGIES, INC.

                under Section 805 of the Business Corporation Law

                      ------------------------------------



                  The undersigned, being the Chairman and Chief Executive
Officer and Secretary, respectively, of Hudson Technologies, Inc. (the
"Corporation") hereby certify that:

                  A. The name of the Corporation is HUDSON TECHNOLOGIES, INC.
The Corporation was formed under the name REFRIGERANT RECLAMATION INDUSTRIES,
INC.

                  B. The Certificate of Incorporation was filed with the
Department of State on January 10, 1991.

                  C. On March __, 1999, the Board of Directors of the
Corporation duly adopted resolutions in order to designate the Series A
Preferred Stock (as set forth in the resolution below).

                  D. The resolution contained herein has not been modified,
altered or amended and is presently in full force and effect.

                  E. To effectuate the foregoing, Paragraph (5) of the
Certificate of Incorporation, which refers to the authorized shares of the
Corporation, is hereby amended by adding the following to the end of said
Paragraph (5):

                  RESOLVED, that pursuant to the authority expressly vested in
the Board of Directors of the Corporation by Paragraph 5 of the Certificate of
Incorporation of the Corporation, the Board of Directors hereby fixes and
determines the voting rights, designations, preferences, qualifications,
privileges, limitations, restrictions, options, conversion rights and other
special or relative rights of the foregoing series of the preferred stock, par
value $.01 per


<PAGE>




share, which shall be designated as Series A Convertible Preferred Stock (the
"Series A Preferred Stock").

                  1. Designation. Seventy-five thousand (75,000) shares of
preferred stock, par value $.01 per share, of the Corporation are hereby
constituted as a series of the preferred stock designated as "Series A
Convertible Preferred Stock"; provided, however, that the Corporation shall
issue any such shares in excess of sixty-five thousand (65,000) only to pay
dividends on the Series A Preferred Stock as provided in Section 2(a)(i).

                  2. Dividends.

                  (a) Dividends on Series A Preferred Stock. The Corporation
shall pay, when and as declared by the Corporation's Board of Directors, to the
holders of the Series A Preferred Stock, out of the assets of the Corporation
legally available therefor, dividends at the times, in the amounts and with such
priorities as follows:

                      (i) Dividend Rate. Dividends on shares of Series A
         Preferred Stock will be payable in arrears in cash or, for the first
         eight fiscal quarters after the Issue Date, at the option of the
         Corporation, in additional shares of Series A Preferred Stock, at a
         rate per annum equal to (x) until the fifth anniversary of the Issue
         Date, 7.00% of the Preferred Liquidation Value thereof on the Dividend
         Payment Date and (y) on and after the fifth anniversary of the Issue
         Date, 16.00% of the Preferred Liquidation Value thereof on the Dividend
         Payment Date. Dividends will be calculated on the basis of a 360-day
         year.

                      (ii) Accrual of Dividends.

                      (A) Dividends on each share of Series A Preferred Stock
         shall accrue cumulatively on a daily basis from the Issue Date to the
         date on which the redemption or conversion of such share of Series A
         Preferred Stock shall have been effected, whether or not such dividends
         have been declared and whether or not there shall be (at the time such
         dividends became or become payable or any other time) profits,
         surpluses or other funds of the Corporation legally available for the
         payment of dividends.

                      (B) To the extent not paid on any Dividend Payment Date
         for any reason other than the Corporation's compliance with Section
         2(b) hereof, all dividends which have accrued on any share of Series A
         Preferred Stock then outstanding during the period from and including
         the preceding Dividend Payment Date (or from and including the Issue
         Date in the case of the initial Dividend Payment Date) to (but
         excluding) such Dividend Payment Date shall be added on such Dividend
         Payment Date to the Preferred Liquidation Value of such share of Series
         A Preferred Stock (so that, without limitation,


                                       -2-

<PAGE>



         dividends shall thereafter accrue in respect of the amount of such
         accrued but unpaid dividends) and shall remain a part thereof until
         (but only until) such dividends are paid.

                      (iii) Payment Dates. Full cumulative dividends on the
         Series A Preferred Stock shall be payable semi-annually, on the last
         day of March and September in each year (each, a "Dividend Payment
         Date"). The first Dividend Payment Date shall be September 30, 1999. If
         any Dividend Payment Date shall be on a day other than a Business Day,
         then the Dividend Payment Date shall be on the next succeeding Business
         Day. An amount equal to the full cumulative dividends shall also be
         payable, in satisfaction of such dividend obligation, upon liquidation
         as provided under Section 3 hereof, and upon redemption as provided
         under Section 6 hereof. The Board of Directors may fix a record date
         for the determination of holders of shares of Series A Preferred Stock
         entitled to receive payment of the dividends payable pursuant to this
         Section 2, which record date shall not be more than 60 days prior to
         the Dividend Payment Date.

                      (iv) Amounts Payable. The amount of dividends payable on
         Series A Preferred Stock on each Dividend Payment Date shall be the
         full cumulative dividends which are unpaid through and including such
         Dividend Payment Date. Dividends which are not paid for any reason
         whatsoever on a Dividend Payment Date shall cumulate until paid and
         shall be payable on the next Dividend Payment Date on which payment can
         lawfully be made (or upon liquidation or redemption as provided
         herein). Holders of shares of Series A Preferred Stock called for
         redemption on a redemption date falling between the close of business
         on a dividend payment record date and the opening of business on the
         corresponding Dividend Payment Date shall, in lieu of receiving such
         dividend payment on the Dividend Payment Date fixed therefor, receive
         an amount equal to such dividend payment (consisting of all accumulated
         and unpaid dividends through the redemption date) on the date fixed for
         redemption. If for whatever reason all payments have not been made with
         respect to any share of Series A Preferred Stock as required by Section
         3 on a distribution date or all payments have not been made with
         respect to any share of Series A Preferred Stock as required by Section
         6 on a redemption date (other than because of a failure by the holder
         thereof to tender such shares for payment on such date), then,
         notwithstanding any other provision hereof, dividends shall continue to
         accumulate on such outstanding shares until paid.

                      (v) Compliance with Section 2(b). Notwithstanding any
         other provision hereof, any dividend not paid by the Corporation under
         this Section 2(a) because of the Corporation's compliance with Section
         2(b) will be deemed paid under the provision of this Certificate of
         Amendment.

                  (b) Dividends on Common Stock. In the event that (i) the
Corporation shall at any time or from time to time declare, order, pay or make a
dividend or other distribution (whether in cash, securities, rights to purchase
securities or other property) on its Common Stock and (ii) such dividend or
other distribution exceeds on a per share of Common Stock equivalent basis the
amount payable on a share of Series A Preferred Stock on the Dividend Payment
Date immediately following the declaration of such dividend or other
distribution on the Common


                                       -3-

<PAGE>



Stock, the holders of the Series A Preferred Stock shall receive, in lieu of the
dividend payable under Section 2(a) on such Dividend Payment Date, from the
Corporation, with respect to each share of Series A Preferred Stock held, a
dividend or distribution that is the same dividend or distribution that would be
received by a holder of the number of shares of Common Stock into which such
share of Series A Preferred Stock is convertible pursuant to the provisions of
Section 5 hereof on the record date for such dividend or distribution. Any such
dividend or distribution shall be declared, ordered, paid or made on the Series
A Preferred Stock at the same time such dividend or distribution is declared,
ordered, paid or made on the Common Stock.

                  (c) Limitation on Dividends, Repurchases and Redemptions. So
long as any shares of Series A Preferred Stock shall be outstanding, the
Corporation shall not declare or pay or set apart for payment any dividends or
make any other distributions on any Junior Securities, whether in cash,
securities, rights to purchase securities or other property (other than
dividends or distributions payable in shares of the class or series upon which
such dividends or distributions are declared or paid), nor shall the Corporation
or any of its Subsidiaries purchase, redeem or otherwise acquire for any
consideration or make payment on account of the purchase, redemption or other
retirement of any Parity Securities or Junior Securities, nor shall any monies
be paid or made available for a sinking fund for the purchase or redemption of
any Parity Securities or Junior Securities, unless with respect to all of the
foregoing all dividends or other distributions to which the holders of Series A
Preferred Stock shall have been entitled, pursuant to Sections 2(a) and 2(b)
hereof, shall have been paid or declared and a sum of money has been set apart
for the full payment thereof.

                  (d) Pro Rata Payments. In the event that full dividends are
not paid or made available to the holders of all outstanding shares of Series A
Preferred Stock and of any Parity Securities and funds available for payment of
dividends shall be insufficient to permit payment in full to holders of all such
stock of the full preferential amounts to which they are then entitled, then the
entire amount available for payment of dividends shall be distributed ratably
among all such holders of Series A Preferred Stock and of any Parity Securities
in proportion to the full amount to which they would otherwise be respectively
entitled.

                  3. Preference on Liquidation.

                  (a) Liquidation Preference for Series A Preferred Stock. In
the event that the Corporation shall liquidate, dissolve or wind up, whether
voluntarily or involuntarily, no distribution shall be made to the holders of
shares of Common Stock or other Junior Securities (and no monies shall be set
apart for such purpose) unless prior thereto, the holders of shares of Series A
Preferred Stock shall have received an amount per share equal to the greater of
(i) the sum of (x) the Liquidation Value, plus (y) all declared but unpaid
dividends thereon through the date of distribution, (ii) ratable distributions
determined with respect to the holders of Series A Preferred Stock and Common
Stock on the basis of the number of shares of Common Stock into which such
Series A Preferred Stock could be converted pursuant to the provisions of
Section 5 hereof immediately prior to such distribution and (iii) the Payment
Amount, on a per share basis


                                       -4-

<PAGE>



(the greater of (i), (ii) and (iii) above is herein referred to as the "Series A
Liquidation Preference").

                  (b) Pro Rata Payments. If, upon any such liquidation,
dissolution or other winding up of the affairs of the Corporation, the assets of
the Corporation shall be insufficient to permit the payment in full of the
Series A Liquidation Preference for each share of Series A Preferred Stock then
outstanding and the full liquidating payments on all Parity Securities, then the
assets of the Corporation remaining shall be ratably distributed among the
holders of Series A Preferred Stock and of any Parity Securities in proportion
to the full amounts to which they would otherwise be respectively entitled if
all amounts thereon were paid in full.

                  (c) Sale Not a Liquidation. Neither the voluntary sale,
conveyance, exchange or transfer (for cash, shares of stock, securities or other
consideration) of all or substantially all the property or assets of the
Corporation nor the consolidation, merger or other business combination of the
Corporation with or into one or more corporations shall be deemed to be a
liquidation, dissolution or winding-up, voluntary or involuntary, of the
Corporation.

                  (d) Notice of Liquidation. Written notice of any liquidation,
dissolution or winding up of the Corporation, stating the payment date or dates
when and the place or places where amounts distributable in such circumstances
shall be payable, shall be given by first class mail, postage prepaid, not less
than thirty (30) days prior to any payment date specified therein, to the
holders of record of the Series D Preferred Stock at their respective addresses
as shall appear on the records of the Corporation.

                  4. Voting.

                  (a) General. In addition to any voting rights provided in the
Corporation's Certificate of Incorporation or by law, the Series A Preferred
Stock shall vote together with the Common Stock as a single class on all actions
to be voted on by the stockholders of the Corporation. Each share of Series A
Preferred Stock shall entitle the holder thereof to such number of votes per
share on each such action as shall equal the number of shares of Common Stock
(including fractions of a share) into which each share of Series A Preferred
Stock is then convertible; provided, however, that each holder of Series A
Preferred Stock and Conversion Shares (as defined below in the definition of
"Fleming Holders") hereby irrevocably constitutes Kevin J. Zugibe and Stephen P.
Mandracchia, and each of them, as such holder's proxy, with full power of
substitution in each of them, in the name, place and stead of such holder, to
vote at all meetings of the stockholders of the Corporation (other than with
respect to matters requiring a separate class vote of holders of the Series A
Preferred Stock) that number of voting shares of the Corporation of all classes,
including any now owned or hereafter acquired shares held by such holder and its
Affiliates, in the aggregate, as shall exceed twenty-nine percent (29%) of the
votes entitled to be cast by all stockholders of the Corporation (as
contemplated in the first sentence of this Section 4(a)). Each such proxy is
coupled with an interest. The holders of Series A


                                       -5-

<PAGE>



Preferred Stock shall be entitled to notice of any stockholder's meeting in
accordance with the By-Laws of the Corporation.

                  (b) Board of Directors. The Corporation shall not, without the
written consent or affirmative vote of the holders representing at least a
majority of the shares of Series A Preferred Stock then outstanding, given in
writing or by vote at a meeting, consenting or voting (as the case may be)
separately as a class, increase the maximum number of directors constituting the
Board of Directors to a number in excess of nine (9).

                  (c) Election of Directors. So long as the Fleming Holders hold
at least thirty-five percent (35%) of the originally issued shares of Series A
Preferred Stock, the Fleming Holders (or if no such shares are held by a Fleming
Holder, any transferee of shares of Series A Preferred Stock consented to by the
Corporation (which consent shall not be unreasonably withheld) (the "Permitted
Preferred Transferee)), shall be entitled, but not required, to elect up to two
(2) directors of the Corporation. So long as the Fleming Holders hold at least
twenty percent (20%), but less than thirty-five (35%) percent, of the originally
issued shares of Series A Preferred Stock, the Fleming Holders (or if no such
shares are held by a Fleming Holder, any Permitted Preferred Transferee), shall
be entitled, but not required, to elect one (1) director of the Corporation. A
director elected in accordance with this Section 4 is referred to as a
"Preferred Director".

                  Holders of at least a majority of the outstanding shares of
Series A Preferred Stock shall exercise their right, as described above, to
elect each Preferred Director by written notice to the Corporation of the
identity of the person nominated to serve as Preferred Director, and requesting
the Corporation to call a meeting of the holders of Series A Preferred Stock to
act upon such nomination. Each such nomination shall be subject to approval by
the Corporation, such approval not to be unreasonably withheld. Promptly upon
such request, the holders of Series A Preferred Stock, consenting or voting as a
class (as the case may be), shall be entitled to elect a Preferred Director at
any meeting (or in a written consent in lieu thereof) held for the purpose of
electing directors until such time as holders of at least a majority of the
outstanding shares of Series A Preferred Stock shall notify the Corporation in
writing that they no longer wish to exercise their right to elect a Preferred
Director.

                  At any meeting (or in a written consent in lieu thereof) held
for the purpose of electing directors, (x) the presence in person or by proxy
(or the written consent) of the holders representing a majority of the shares of
Series A Preferred Stock then outstanding shall constitute a quorum of such
class for the election of a Preferred Director; and (y) the absence of the
presence in person or by proxy (or written consent) of the holders representing
less than a majority of the shares of Common Stock then outstanding shall not
affect the right of a quorum of holders of Series A Preferred Stock to elect a
Preferred Director. Any Preferred Director may be removed with or without cause
by, and shall not be removed except by, the holders representing a majority of
the shares of Series A Preferred Stock then outstanding, present in person or by
proxy and voting at a meeting of stockholders, or of the holders of Series A


                                       -6-

<PAGE>



Preferred Stock called for that purpose, or by written consent signed by the
holders representing a majority of the shares of Series A Preferred Stock then
outstanding.

                  A vacancy in the directorship to be held by a Preferred
Director shall be filled only by vote or written consent of the holders of the
Series A Preferred Stock as provided above. Unless otherwise required by the
laws of the State of New York, any holder or holders of at least a majority of
the outstanding shares of Series A Preferred Stock shall have the right to call
a meeting of the holders of Series A Preferred Stock of the Corporation for the
purpose of electing a Preferred Director and filling vacancies of Preferred
Directors.

                  5. Conversion. The holders of shares of Series A Preferred
Stock shall have the right to convert all or a portion of such shares into fully
paid and nonassessable shares of Common Stock or any capital stock or other
securities into which such Common Stock shall have been changed or any capital
stock or other securities resulting from a reclassification thereof as follows:

                  (a) Right to Convert. Subject to and upon compliance with the
provisions of this Section 5, a holder of shares of Series A Preferred Stock
shall have the right, at the option of such holder, at any time, to convert any
or all of such shares into the number of fully paid and nonassessable shares of
Common Stock (calculated as to each conversion rounded down to the nearest
1/100th of a share) obtained by dividing (i) the aggregate Liquidation Value of
the shares to be converted, plus all declared but unpaid dividends thereon
through the date of conversion (unless the holder of shares of Series A
Preferred Stock being so converted shall have elected to receive any such
dividends in respect of the shares being converted subsequent to conversion), by
(ii) the Conversion Price, and by surrender of such shares, such surrender to be
made in the manner provided in paragraph (b) of this Section 5. The Common Stock
issuable upon conversion of the shares of Series A Preferred Stock, when such
Common Stock shall be issued in accordance with the terms hereof, is hereby
declared to be and shall be duly authorized, validly issued, fully paid and
nonassessable Common Stock held by the holders thereof.

                  (b) Mechanics of Conversion. Each holder of Series A Preferred
Stock that desires to convert the same into shares of Common Stock shall
surrender the certificate or certificates therefor, duly endorsed, at the
principal office of the Corporation or of any transfer agent for the Series A
Preferred Stock or Common Stock, accompanied by written notice to the
Corporation that such holder elects to convert the same and stating therein the
number of shares of Series A Preferred Stock being converted and whether all
declared and unpaid dividends in respect of such shares shall be included in the
calculation set forth in Section 5(a) hereof, and setting forth the name or
names in which such holder wishes the certificate or certificates for shares of
Common Stock to be issued if such name or names shall be different from that of
such holder. Thereupon, the Corporation shall issue and deliver at such office
on the fifth succeeding Business Day after receipt of such certificate and
notice (unless such conversion is in connection with an underwritten public
offering of Common Stock, in which event concurrently with such conversion) to
such holder or on such holder's written order, (i) a certificate or certificates
for the

                                       -7-

<PAGE>



number of validly issued, fully paid and nonassessable full shares of Common
Stock to which such holder is entitled and (ii) if less than the full number of
shares of Series A Preferred Stock evidenced by the surrendered certificate or
certificates being converted, a new certificate or certificates, of like tenor,
for the number of shares evidenced by such surrendered certificate or
certificates less the number of shares converted.

                  Each conversion shall be deemed to have been effected
immediately prior to the close of business on the date of such surrender of the
shares to be converted (except that if such conversion is in connection with an
underwritten public offering of Common Stock, then such conversion shall be
deemed to have been effected upon such surrender) so that the rights of the
holder thereof as to the shares being converted shall cease at such time except
for (x) the right to receive shares of Common Stock and (y) if the holder of the
shares being so converted shall have elected to receive dividends subsequent to
such conversion, all accrued and unpaid dividends in accordance herewith, and
the person entitled to receive the shares of Common Stock issuable upon such
conversion shall be treated for all purposes as the record holder of such shares
of Common Stock at such time.

                  (c) Conditional Conversion. Notwithstanding any other
provision hereof, if conversion of any shares of Series A Preferred Stock is to
be made in connection with a public offering of Common Stock or any transaction
described in Section 5(d)(vii) hereof, the conversion of any shares of Series A
Preferred Stock may, at the election of the holder thereof, be conditioned upon
the consummation of the public offering or such transaction, in which case such
conversion shall not be deemed to be effective until the consummation of such
public offering or transaction.

                  (d) Adjustment of the Conversion Price. The Conversion Price
shall be adjusted from time to time as follows:

                      (i) Adjustment for Stock Splits and Combinations. If the
         Corporation at any time or from time to time after the Issue Date, pays
         a stock dividend in shares of its Common Stock, issues any convertible
         debt securities, effects a subdivision of the outstanding Common Stock,
         combines the outstanding shares of Common Stock, issues by
         reclassification of shares of its Common Stock any shares of capital
         stock of the Corporation, makes a distribution of any of its assets
         (other than cash dividends payable out of earnings or retained earnings
         in the ordinary course of business) then, in each such case, the
         Conversion Price in effect immediately prior to such event shall be
         adjusted so that each holder of shares of Series A Preferred Stock
         shall have the right to convert its shares of Series A Preferred Stock
         into the number of shares of Common Stock which it would have owned
         after the event had such shares of Series A Preferred Stock been
         converted immediately before the happening of such event. Any
         adjustment under this Section 5(d)(i) shall become effective
         retroactively immediately after the record date in the case of a
         dividend and distribution and shall become effective immediately after
         the effective date in the case of a issuance, subdivision, combination
         or reclassification. If

                                       -8-

<PAGE>



         the Corporation pays a stock dividend in shares of its Common Stock and
         the holders of the Series A Preferred Stock received such stock
         dividend pursuant to Section 2(b) hereof, the Conversion Price shall
         not be adjusted for such stock dividend under this Section 5(d)(i).

                      (ii) Issuance of Additional Shares of Stock. If the
         Corporation shall (except as hereinafter provided) issue or sell
         Additional Shares of Stock in exchange for consideration in an amount
         per Additional Share of Stock less than the Conversion Price in effect
         immediately prior to such issuance or sale of Additional Shares of
         Stock, then the Conversion Price as to the Common Stock into which the
         Series A Preferred Stock is convertible immediately prior to such
         adjustment shall be adjusted to equal the consideration paid per
         Additional Share of Stock. The provisions of this Section 5(d)(ii)
         shall not apply to any issuance of Additional Shares of Common Stock
         for which an adjustment is provided under Section 5(d)(i) or which are
         dividends or distributions received by the holders of the Series A
         Preferred Stock pursuant to Section 2(b) hereof.

                      (iii) (A) Issuance of Warrants or Other Rights. If at any
         time (i) the Corporation shall in any manner (whether directly or by
         assumption in a merger in which the Corporation is the surviving
         corporation) issue or sell any warrants or other rights to subscribe
         for or purchase any Additional Shares of Stock or any Convertible
         Securities, whether or not the rights to exchange or convert thereunder
         are immediately exercisable, and the consideration received for such
         warrants or other rights or such Convertible Securities shall be less
         than the Conversion Price in effect immediately prior to the time of
         such issue or sale, then the Conversion Price shall be adjusted as
         provided in Section 5(d)(ii). No further adjustments of the Conversion
         Price shall be made upon the actual issue of such Common Stock or of
         such Convertible Securities, upon exercise of such warrants or other
         rights or upon the actual issue of such Common Stock upon such
         conversion or exchange of such Convertible Securities.

                            (B) Issuance of Convertible Securities. If at any
         time the Corporation shall in any manner (whether directly or by
         assumption in a merger in which the Corporation is the surviving
         corporation) issue or sell, any Convertible Securities, whether or not
         the rights to convert thereunder are immediately exercisable, and the
         consideration received for such Convertible Securities shall be less
         than the Conversion Price in effect immediately prior to the time of
         such issue or sale, then the Conversion Price shall be adjusted as
         provided in Section 5(d)(ii). No adjustment of the Conversion Price
         shall be made under this Section 5(d)(iii)(B) upon the issuance of any
         Convertible Securities which are issued pursuant to the exercise of any
         warrants or other subscription or purchase rights therefor, if any such
         adjustment shall previously have been made upon the issuance of such
         warrants or other rights pursuant to Section 5(d)(iii)(A). No further
         adjustments of the Conversion Price shall be made upon the actual issue
         of such Common Stock upon conversion of such Convertible Securities
         and, if any issue or sale of such Convertible Securities is made upon
         exercise of any warrant or other right to subscribe


                                       -9-

<PAGE>



         for or to purchase any such Convertible Securities for which
         adjustments of the Conversion Price have been or are to be made
         pursuant to other provisions of this Section 5(d), no further
         adjustments of the Conversion Price shall be made by reason of such
         issue or sale.

                      (iv) Superseding Adjustments. If, at any time after any
         adjustment of the Conversion Price at which the Series A Preferred
         Stock is convertible shall have been made pursuant to Section 5(d)(iii)
         as a result of any issuance of warrants, rights or Convertible
         Securities,

                           (A) such warrants or rights, or the right of
                  conversion or exchange in such other Convertible Securities,
                  shall expire, and all or a portion of such warrants or rights,
                  or the right of conversion or exchange with respect to all or
                  a portion of such other Convertible Securities, as the case
                  may be, shall not have been exercised, or

                           (B) the consideration per share for which Additional
                  Shares of Stock are issuable pursuant to such warrants or
                  rights, or the terms of such other Convertible Securities,
                  shall be increased (to an amount greater than that which
                  triggered the adjustment of the Conversion Price pursuant to
                  Section 5(d)(iii)) solely by virtue of provisions therein
                  contained for an automatic increase in such consideration per
                  share upon the occurrence of a specified date or event,

         then such previous adjustment shall be rescinded and annulled and the
         Additional Shares of Stock which were deemed to have been issued by
         virtue of the computation made in connection with the adjustment so
         rescinded and annulled shall no longer be deemed to have been issued by
         virtue of such computation. Thereupon, a recomputation shall be made of
         the effect of such warrants or rights or other Convertible Securities
         on the basis of

                           (C) treating the number of Additional Shares of Stock
                  or other property, if any, theretofore actually issued or
                  issuable pursuant to the previous exercise of any such
                  warrants or rights or any such right of conversion or
                  exchange, as having been issued on the date or dates of any
                  such exercise and for the consideration actually received and
                  receivable therefor, and

                           (D) treating any such warrants or rights or any such
                  other Convertible Securities which then remain outstanding as
                  having been granted or issued immediately after the time of
                  such increase of the consideration per share for which
                  Additional Shares of Stock or other property are issuable
                  under such warrants or rights or other Convertible Securities;


                                      -10-

<PAGE>



                  whereupon a new adjustment of the Conversion Price at which
                  the Series A Preferred Stock is convertible shall be made,
                  which new adjustment shall supersede the previous adjustment
                  so rescinded and annulled.

                      (v) Antidilution Adjustments Under Other Securities.
         Without limiting any other rights available hereunder to the holders of
         the Series A Preferred Stock, if there is an antidilution adjustment
         (i) under any Convertible Securities, whether issued prior to or after
         the Issue Date, or (ii) under any rights, options or warrants to
         purchase Additional Shares of Stock, whether issued prior to or after
         the Issue Date which, in either case, results in a reduction in the
         exercise or purchase price with respect to such security or rights or
         results in an increase in the number of Additional Shares of Stock
         obtainable under such Convertible Security, right, option or warrant,
         then an adjustment shall be made to the Conversion Price hereunder. Any
         such adjustment pursuant to this Section 5(d)(v) shall be by whichever
         of the following methods results in a lower Conversion Price: (A) a
         reduction in the Conversion Price equal to the percentage reduction in
         such exercise or purchase price with respect to such Convertible
         Security, right, option or warrant or (B) a reduction in the Conversion
         Price which will result in the same percentage increase in the number
         of shares of Common Stock available hereunder as the percentage
         increase in the number of Additional Shares of Stock available under
         such Convertible Security, right, option or warrant. Any such
         adjustment under this Section 5(d)(v) shall only be made if it would
         result in a lower Conversion Price than that which would be determined
         pursuant to any other antidilution adjustment otherwise required
         hereunder as a result of the event or circumstance which triggered the
         adjustment to such Convertible Security, right, option or warrant, and
         if an adjustment is made pursuant to this Section 5(d)(v), such other
         antidilution adjustment otherwise required hereunder shall not be made
         as a result of such event or circumstance.

                      (vi) Other Provisions Applicable to Adjustments under this
         Section. The following provisions shall be applicable to making
         adjustments to the shares of Common Stock into which the Series A
         Preferred Stock is convertible and the Conversion Price at which the
         Series A Preferred Stock is convertible provided for in this Section
         5(d):

                           (A) Computation of Consideration. To the extent that
                  any Additional Shares of Stock or any Convertible Securities
                  or any warrants or other rights to subscribe for or purchase
                  any Additional Shares of Stock or any Convertible Securities
                  shall be issued for cash consideration, the consideration
                  received by the Corporation therefor shall be the amount of
                  the cash received by the Corporation therefor, or, if such
                  Additional Shares of Stock or Convertible Securities are
                  offered by the Corporation for subscription, the subscription
                  price, or, if such Additional Shares of Stock or Convertible
                  Securities are sold to underwriters or dealers for public
                  offering without a subscription offering, the public offering
                  price (in any such case subtracting any amounts paid or
                  receivable for accrued interest or accrued dividends and any
                  compensation, discounts or expenses paid or


                                      -11-

<PAGE>



                  incurred by the Corporation for and in the underwriting of, or
                  otherwise in connection with, the issuance thereof, to the
                  extent such amounts shall exceed in any such case five percent
                  (5%) of the amount of cash received, subscription price or
                  public offering price). To the extent that such issuance shall
                  be for a consideration other than cash, then except as herein
                  otherwise expressly provided, the amount of such consideration
                  shall be deemed to be the fair value of such consideration at
                  the time of such issuance as determined in good faith by the
                  Board of Directors of the Corporation. In case any Additional
                  Shares of Stock or any Convertible Securities or any warrants
                  or other rights to subscribe for or purchase such Additional
                  Shares of Stock or Convertible Securities shall be issued in
                  connection with any merger in which the Corporation issues any
                  securities, the amount of consideration therefor shall be
                  deemed to be the fair value, as determined in good faith by
                  the Board of Directors of the Corporation, of such portion of
                  the assets and business of the nonsurviving corporation as
                  such Board in good faith shall determine to be attributable to
                  such Additional Shares of Stock, Convertible Securities,
                  warrants or other rights, as the case may be. The
                  consideration for any Additional Shares of Stock issuable
                  pursuant to any warrants or other rights to subscribe for or
                  purchase the same shall be the consideration received by the
                  Corporation for issuing such warrants or other rights plus the
                  additional consideration payable to the Corporation upon
                  exercise of such warrants or other rights. The consideration
                  for any Additional Shares of Stock issuable pursuant to the
                  terms of any Convertible Securities shall be the consideration
                  received by the Corporation for issuing warrants or other
                  rights to subscribe for or purchase such Convertible
                  Securities, plus the consideration paid or payable to the
                  Corporation in respect of the subscription for or purchase of
                  such Convertible Securities, plus the additional
                  consideration, if any, payable to the Corporation upon the
                  exercise of the right of conversion or exchange in such
                  Convertible Securities. In case of the issuance at any time of
                  any Additional Shares of Stock or Convertible Securities in
                  payment or satisfaction of any dividends upon any class of
                  stock other than Common Stock, the Corporation shall be deemed
                  to have received for such Additional Shares of Stock or
                  Convertible Securities a consideration equal to the amount of
                  such dividend so paid or satisfied.

                           (B) When Adjustments to Be Made. The adjustments
                  required by this Section 5(d) shall be made whenever and as
                  often as any event requiring an adjustment shall occur, except
                  that any adjustment of the Conversion Price that would
                  otherwise be required may be postponed (except in the case of
                  a subdivision or combination of shares of the Common Stock, as
                  provided for in Section 5(d)(i)) up to, but not beyond, the
                  date of exercise if such adjustment either by itself or with
                  other adjustments not previously made amount to a change in
                  the Conversion Price of less than $.05. Any adjustment
                  representing a change of less than such minimum amount (except
                  as aforesaid) which is postponed shall


                                      -12-

<PAGE>



                  be carried forward and made as soon as such adjustment,
                  together with other adjustments required by this Section 5(d)
                  and not previously made, would result in a minimum adjustment
                  or on the date of conversion. For the purpose of any
                  adjustment, any event shall be deemed to have occurred at the
                  close of business on the date of its occurrence.

                           (C) Fractional Interests. In computing adjustments
                  under this Section 5(d), fractional interests in the Common
                  Stock shall be taken into account to the nearest 1/100th of a
                  share.

                           (D) Challenge to Good Faith Determination. Whenever
                  the Board of Directors of the Corporation shall be required to
                  make a determination in good faith of the fair value of any
                  item under this Section 5(d), such determination may be
                  challenged in good faith by (1) any holder of thirty percent
                  (30%) or more of Series A Preferred Stock or (2) a Designated
                  Entity, and any dispute shall be resolved by an investment
                  banking firm of recognized national standing jointly selected
                  by the Corporation and such holder or Designated Entity. The
                  fees of such investment banker shall be borne by such holder
                  or Designated Entity unless the Corporation's calculation is
                  determined to be understated by five percent (5%) or more.

                      (vii) Reorganization, Reclassification, Merger or
         Consolidation. If the Corporation shall at any time reorganize or
         reclassify the outstanding shares of Common Stock (other than a change
         in par value, or from no par value to par value, or from par value to
         no par value, or as a result of a subdivision or combination) or
         consolidate with or merge into another corporation (where the
         Corporation is not the continuing corporation after such merger or
         consolidation), the holders of Series A Preferred Stock shall
         thereafter be entitled to receive upon conversion of the Series A
         Preferred Stock in whole or in part, the same kind and number of shares
         of stock and other securities, cash or other property (and upon the
         same terms and with the same rights) as would have been distributed to
         a holder upon such reorganization, reclassification, consolidation or
         merger had such holder converted its Series A Preferred Stock
         immediately prior to such reorganization, reclassification,
         consolidation or merger (subject to subsequent adjustments under
         Section 5(d) hereof). The Conversion Price upon such conversion shall
         be the Conversion Price that would otherwise be in effect pursuant to
         the terms hereof. Notwithstanding anything herein to the contrary, the
         Corporation will not effect any such reorganization, reclassification,
         merger or consolidation unless prior to the consummation thereof, the
         corporation which may be required to deliver any stock, securities or
         other assets upon the conversion of the Series A Preferred Stock shall
         agree by an instrument in writing to deliver such stock, cash,
         securities or other assets to the holders of the Series A Preferred
         Stock. A sale, transfer or lease of all or substantially all of the
         assets of the Corporation to another person shall be deemed a
         reorganization, reclassification, consolidation or merger for the
         foregoing purposes.


                                      -13-

<PAGE>



                      (viii) Exceptions to Adjustment of Conversion Price.
         Anything herein to the contrary notwithstanding, the Corporation shall
         not make any adjustment of the Conversion Price in the case of
         Additional Shares of Stock.

                      (ix) Chief Financial Officer's Opinion. Upon each
         adjustment of the Conversion Price, and in the event of any change in
         the rights of a holder of Series A Preferred Stock by reason of other
         events herein set forth, then and in each such case, the Corporation
         will promptly obtain an opinion of the chief financial officer of the
         Corporation, stating the adjusted Conversion Price, or specifying the
         other shares of the Common Stock, securities or assets and the amount
         thereof receivable as a result of such change in rights, and setting
         forth in reasonable detail the method of calculation and the facts upon
         which such calculation is based. The Corporation will promptly mail a
         copy of such opinion to the holders of Series A Preferred Stock. If a
         holder of thirty percent (30%) or more of Series A Preferred Stock or a
         Designated Entity disagrees with such calculation, the Corporation
         agrees to obtain within forty-five (45) Business Days an opinion of a
         firm of independent certified public accountants selected by the
         Corporation's Board of Directors and acceptable to such holder to
         review such calculation and the opinion of such firm of independent
         certified public accountants shall be final and binding on the parties
         and shall be conclusive evidence of the correctness of the computation
         with respect to any such adjustment of the Conversion Price. The fees
         of such accountants shall be borne by such holder or Designated Entity
         unless the calculation of the chief financial officer of the
         Corporation is determined to be understated by five percent (5%) or
         more.

                      (x) Corporation to Prevent Dilution. In case at any time
         or from time to time conditions arise by reason of action taken by the
         Corporation, which in the good faith opinion of its Board of Directors
         or a majority of the holders of the Series A Preferred Stock are not
         adequately covered by the provisions of this Section 5(d), and which
         might materially and adversely affect the exercise rights of the
         holders of the Series A Preferred Stock, the Board of Directors of the
         Corporation shall appoint such firm of independent certified public
         accountants acceptable to a majority of the holders of the Series A
         Preferred Stock, which shall give their opinion upon the adjustment, if
         any, on a basis consistent with the standards established in the other
         provisions of this Section 5(d), necessary with respect to the
         Conversion Price, so as to preserve, without dilution (other than as
         specifically contemplated by the Certificate of Incorporation), the
         exercise rights of the holders of the Series A Preferred Stock. Upon
         receipt of such opinion, the Board of Directors of the Corporation
         shall forthwith make the adjustments described therein.

                  (e) No Impairment. The Corporation will not, by amendment of
its Certificate of Incorporation or through any reorganization,
recapitalization, transfer of assets, consolidation, merger, dissolution, issue
or sale of securities or any other voluntary action, avoid or seek to avoid the
observance or performance of any of the terms to be observed or performed
hereunder


                                      -14-

<PAGE>



by the Corporation, but will at all times in good faith assist in the carrying
out of all the provisions of Section 5 hereof and in the taking of all such
action as may be necessary or appropriate in order to protect the conversion
rights of the holders of the Series A Preferred Stock against impairment.

                  (f) No Fractional Share Adjustments. No fractional shares
shall be issued upon conversion of the Series A Preferred Stock. If more than
one share of the Series A Preferred Stock is to be converted at one time by the
same stockholder, the number of full shares issuable upon such conversion shall
be computed on the basis of the aggregate amount of the shares to be converted.
Instead of any fractional shares of Common Stock which would otherwise be
issuable upon conversion of any shares of Series A Preferred Stock, the
Corporation will pay a cash adjustment in respect of such fractional interest in
an amount equal to the same fraction of the Market Price per share of Common
Stock at the close of business on the day of conversion which such shares of
Series A Preferred Stock would be convertible into on such date.

                  (g) Shares to be Reserved. The Corporation shall at all times
reserve and keep available, out of its authorized and unissued stock, solely for
the purpose of effecting the conversion of the Series A Preferred Stock, such
number of shares of Common Stock as shall from time to time be sufficient to
effect the conversion of all of the Series A Preferred Stock from time to time
outstanding. The Corporation shall from time to time, in accordance with the
laws of the State of New York, increase the authorized number of shares of
Common Stock if at any time the number of shares of authorized but unissued
Common Stock shall be insufficient to permit the conversion in full of the
Series A Preferred Stock.

                  (h) Taxes and Charges. The Corporation will pay any and all
issue or other taxes that may be payable in respect of any issuance or delivery
of shares of Common Stock on conversion of the Series A Preferred Stock. The
Corporation shall not, however, be required to pay any tax which may be payable
in respect of any transfer involved in the issuance or delivery of Common Stock
in a name other than that of the Series A Preferred Stock, and no such issuance
or delivery shall be made unless and until the Person requesting such issuance
has paid to the Corporation the amount of such tax or has established, to the
satisfaction of the Corporation, that such tax has been paid.

                  (i) Accrued Dividends. Upon conversion of any shares of Series
A Preferred Stock, the holder thereof shall be entitled to receive any accrued
but unpaid dividends in respect of the shares of Series A Preferred Stock so
converted to the date of such conversion.

                  (j) Closing of Books. The Corporation will at no time close
its transfer books against the transfer of any shares of Series A Preferred
Stock or of any shares of Common Stock issued or issuable upon the conversion of
any shares of Series A Preferred Stock in any manner which interferes with the
timely conversion of such shares of Series A Preferred Stock.



                                      -15-

<PAGE>





                  6. Redemption

                  (a) Redemption Price. Any redemption of the Series A Preferred
Stock pursuant to Section 6(b) shall be at a price per share equal to the
Liquidation Value plus all declared but unpaid dividends thereon through the
redemption date (the "Mandatory Redemption Price"). Any redemption of the Series
A Preferred Stock pursuant to Section 6(d) shall be at a price per share equal
to the Series A Liquidation Preference, except that, for purposes of calculation
of the redemption price under this Section 6(a), clause (ii) of the definition
of Series A Liquidation Preference in Section 3(a) hereof shall provide for the
amount per share such holders would have received if such holders had converted
their shares of Series A Preferred Stock into shares of Common Stock immediately
prior to the Fundamental Change (the "Optional Redemption Price"). The Mandatory
Redemption Price shall be paid, at the election of the Corporation, in cash or
shares of Common Stock which have been registered under a registration statement
under the Securities Act of 1933, as amended, which registration statement is
effective, provided, that, for purposes of calculating the number of shares of
Common Stock to be received by each holder of Series A Preferred Stock, each
such share of Common Stock shall be valued at 90% of the Market Price.

                  (b) Redemption at the Corporation's Option. Subject to Section
6(a) hereof, the Corporation may, it its option, redeem all, but not less than
all, of the then outstanding shares of Series A Preferred Stock at the Mandatory
Redemption Price on March 31, 2004.

                  (c) Procedures for Redemption at the Corporation's Option. In
the event the Corporation shall redeem shares of Series A Preferred Stock
pursuant to Section 6(b), the Corporation shall give written notice of such
redemption by first class mail, postage prepaid, mailed not less than thirty
(30) nor more than ninety (90) days prior to the redemption date, to each holder
of record of the shares to be redeemed, at such holder's address as the same
appears on the stock records of the Corporation. Each such notice shall state:
(i) the redemption date; (ii) the number of shares of Series A Preferred Stock
to be redeemed; (iii) the Mandatory Redemption Price or Optional Redemption
Price, as the case may be; (iv) the place or places where certificates for such
shares are to be surrendered for payment of the Mandatory Redemption Price or
Optional Redemption Price, as the case may be; (v) that payment will be made
upon presentation and surrender of such Series A Preferred Stock; (vi) the then
current Conversion Price; (vii) that dividends on the shares to be redeemed
shall cease to accrue following such redemption date; (viii) that such
redemption is mandatory, if pursuant to Section 6(b); and (ix) that dividends,
if any, accrued to and including the date fixed for redemption will be paid as
specified in such notice. Notice having been mailed as aforesaid, from and after
the redemption date, unless the Corporation shall be in default in the payment
of the Mandatory Redemption Price or Optional Redemption Price, as the case may
be (including any accrued and unpaid dividends to (and including) the date fixed
for redemption), (A) dividends on the shares of the Series A Preferred Stock so
called for redemption shall cease to accrue, (B) such shares


                                      -16-

<PAGE>



shall be deemed no longer outstanding and (C) all rights of the holders thereof
as stockholders of the Corporation (except the right to receive from the
Corporation (i) any moneys payable upon redemption without interest thereon and
(ii) any shares of Series A Preferred Stock and Common Stock pursuant to Section
6(a) hereof) shall cease.

                  Upon surrender in accordance with such notice of the
certificates for any such shares so redeemed (properly endorsed or assigned for
transfer, if the Board of Directors shall so require and the notice shall so
state), such shares shall be redeemed by the Corporation at the applicable
Mandatory Redemption Price.

                  Notwithstanding the foregoing, if notice of redemption has
been given pursuant to this Section 6 and any holder of shares of Series A
Preferred Stock shall, prior to the close of business on the third (3rd)
Business Day preceding the redemption date, give written notice to the
Corporation pursuant to Section 5(b) hereof of the conversion of any or all of
the shares to be redeemed held by such holder (accompanied by a certificate or
certificates for such shares, duly endorsed or assigned to the Corporation),
then the conversion of such shares to be redeemed shall become effective as
provided in Section 5 hereof.

                  (d) Redemption at Option of Holder Upon a Fundamental Change.
Subject to Section 6(a) hereof, if a Fundamental Change occurs, each holder of
Series A Preferred Stock shall have the right, at the holder's option, to
require the Corporation to repurchase all of such holder's Series A Preferred
Stock, or any portion thereof, on the date (the "Repurchase Date") selected by
the Corporation that is not less than ten (10) nor more than twenty (20) days
after the Final Surrender Date, at a price per share equal to the Optional
Redemption Price. The Corporation agrees that it will not complete any
Fundamental Change unless proper provision has been made to satisfy its
obligations under this Section 6(d).

                  (e) Notice of Fundamental Change. Within thirty (30) days
after the occurrence of a Fundamental Change, the Corporation shall mail to all
holders of record of the Series A Preferred Stock a notice in the manner and
containing the information set out in Section 6(c), except that, for purposes of
this Section 6(e), such notice shall also describe the occurrence of such
Fundamental Change and the repurchase right arising as a result thereof. To
exercise the repurchase right, a holder of Series A Preferred Stock must
surrender, on or before the date which is, subject to any contrary requirements
of applicable law, thirty (30) days after the date of mailing of the notice from
the Corporation (the "Final Surrender Date"), the certificates representing the
Series A Preferred Stock with respect to which the right is being exercised,
duly endorsed for transfer to the Corporation, together with a written notice of
election.

                  (f) Election Irrevocable. An election by a holder of Series A
Preferred Stock to have the Corporation repurchase shares of Series A Preferred
Stock pursuant to Section 6(d) shall become irrevocable at the close of business
on the relevant Repurchase Date.


                                      -17-

<PAGE>



                  7. Shares to be Retired. Any share of Series A Preferred Stock
converted, redeemed, repurchased or otherwise acquired by the Corporation shall
be retired and cancelled and shall upon cancellation be restored to the status
of authorized but unissued shares of preferred stock, subject to reissuance by
the Board of Directors as shares of preferred stock of one or more other series
but not as shares of Series A Preferred Stock.

                  8. Preemptive Rights.

                  (a) Except (i) for issuances of pro rata dividends to all
holders of Common Stock, (ii) stock issued to employees, officers or directors
in connection with management options or incentive plans approved by the Board
of Directors, (iii) stock issued in connection with any merger, acquisition or
business combination or (iv) stock issued for consideration amounting to less
than $500,000 in any single transaction where the purchase price is not less
than the then applicable Conversion Price, provided that the aggregate amount of
all such transactions shall not exceed $1,000,000, the holders of the Series A
Preferred Stock, in order to enable such holders to maintain their fully diluted
percentage ownership of the Corporation, shall have preemptive rights, as
hereinafter set forth, to purchase any capital stock, including any warrants or
securities convertible into capital stock, of the Corporation hereafter issued
by the Corporation so that a holder of the Series A Preferred Stock shall
hereafter be entitled to acquire a percentage of capital stock which is
hereafter issued equal to the same percentage of the issued and outstanding
Common Stock of the Corporation as is held (directly or obtainable upon
conversion of the Series A Preferred Stock) by such holder of Series A Preferred
Stock immediately prior to the date on which the capital stock is to be issued.
As used herein, "issue" (and variations thereof) includes sales and transfers by
the Corporation of treasury shares.

                  (b) The Corporation shall, before issuing any additional
capital stock (other than the exceptions referred to in Section 8(a) hereof),
give written notice thereof to the holders of the Series A Preferred Stock. Such
notice shall specify what type of instrument the Corporation intends to issue
and the consideration which the Corporation intends to receive therefor. For a
period of twenty (20) days following receipt by the holders of the Series A
Preferred Stock of such notice, the Corporation shall be deemed to have
irrevocably offered to sell to the holders of the Series A Preferred Stock a
sufficient number of shares of such capital stock so that the holders of the
Series A Preferred Stock, if such holders elect to acquire such shares as
hereinafter set forth, shall be capable of acquiring the same percentage of such
shares as the percentage of Common Stock beneficially owned (directly or
obtainable upon conversion of the Series A Preferred Stock) by such holders
immediately prior to the proposed issuance. In the event any such offer is
accepted, in whole or in part, by the holders of the Series A Preferred Stock,
the Corporation shall sell such shares to holders of the Series A Preferred
Stock for the consideration and on the precise terms set forth in the
Corporation's notice (given under the first two sentences of this paragraph). In
the event that one or more holders of the Series A Preferred Stock elects not
to, or fails to, exercise its rights under this Section 8(b) within the twenty
(20) day period, then the Corporation may issue the remaining shares of capital
stock to third persons but only for the same consideration set forth in the
Corporation's notice (given under the first two


                                      -18-

<PAGE>



sentences of this paragraph) and no later than sixty (60) days after the
expiration of such twenty (20) day period. The closing for such transaction
shall take place as proposed by the Corporation with respect to the shares of
capital stock proposed to be issued, at which closing the Corporation shall
deliver certificates for the shares of capital stock in the respective names of
the holders of the Series A Preferred Stock against receipt of the consideration
therefor.

                  (c) Notwithstanding any other provision hereof, (i) the
preemptive rights granted to holders of Series A Preferred Stock by this Section
8 shall terminate with respect to a share of Series A Preferred Stock upon the
conversion or redemption of such share of Series A Preferred Stock in accordance
with the provisions hereof and (ii) the holders of Series A Preferred Stock and
Conversion Shares shall not increase the fully diluted percentage ownership of
the Corporation beyond such level as exists immediately following the Issue
Date, whether by operation of the provisions of Section 2 or 5 hereof, through
an open market purchase or otherwise, except where the Corporation (a)
determines to pay dividends in additional shares of Series A Preferred Stock as
permitted by Section 2(a)(i), (b) is in financial distress and chooses to issue
securities to such holders, (c) repurchases outstanding shares of its capital
stock or takes other corporate action having a similar effect or (d) pursuant to
Section 5(d), has issued or sold Additional Shares of Stock in exchange for
consideration in an amount per Additional Share of Stock less than the
Conversion Price in effect immediately prior to such issuance or sale.

                  9. Call

                  (a) Call at the Corporation's Option. Subject to the other
provisions of this Section 9, on any date beginning two years after the Issue
Date, the Corporation shall have the right to purchase all (but not less than
all) outstanding shares of Series A Preferred Stock (the "Call"), provided,
however, that (i) the Market Price of a share of Common Stock is equal to, or
greater than, an amount equal to 250% of the then applicable Conversion Price
and (ii) the Common Stock has traded, on the principal market for the Common
Stock, with an average daily volume in excess of 20,000 shares for a period of
30 consecutive days ending on the day immediately prior to such date. Any
purchase of the Series A Preferred Stock pursuant to this Section 9(a) shall be
at a price per share of Series A Preferred Stock equal to the Mandatory
Redemption Price.

                  (b) Procedures for Call at the Corporation's Option. The
Corporation's right to Call the Series A Preferred Stock pursuant to Section
9(a) shall be conditioned upon the Corporation giving notice (the "Call
Notice"), by first class mail, postage prepaid, of the exercise of the Call to
the holders of the Series A Preferred Stock not less than twenty five (25) days
prior to the date of the exercise of the Call (the "Call Date"). Each Call
Notice shall state: (i) the Call Date; (ii) the Mandatory Redemption Price;
(iii) the place or places where certificates for such shares are to be
surrendered for payment of the Mandatory Redemption Price; (iv) that payment
will be made upon presentation and surrender of such Series A Preferred Stock;
(v) the then current Conversion Price and the date on which the right to convert
such shares of Series A Preferred Stock will expire; (vi) that dividends on the
shares to be purchased shall cease to


                                      -19-

<PAGE>



accrue following such Call Date; (vii) that such Call is mandatory; and (viii)
that dividends, if any, accrued to and including the Call Date will be paid as
specified in such notice. Notice having been mailed as aforesaid, from and after
the Call Date, unless the Corporation shall be in default in the payment of the
Mandatory Redemption Price (including any accrued and unpaid dividends to (and
including) the Call Date), (A) dividends on the shares of the Series A Preferred
Stock shall cease to accrue, (B) such shares shall be deemed no longer
outstanding and (C) all rights of the holders thereof as stockholders of the
Corporation (except the right to receive from the Corporation (i) any moneys
payable upon exercise of the Call without interest thereon and (ii) any shares
of Common Stock pursuant to Section 5 hereof) shall cease.

                  Upon surrender in accordance with the Call Notice of the
certificates for any such shares so purchased (properly endorsed or assigned for
transfer, if the Board of Directors shall so require and the Call Notice shall
so state), such shares shall be purchased by the Corporation at the applicable
Mandatory Redemption Price.

                  Notwithstanding the foregoing, if the Call Notice has been
given pursuant to this Section 9 and any holder of shares of Series A Preferred
Stock shall, prior to the close of business on the twentieth (20th) day after
receipt of such Call Notice, give written notice to the Corporation pursuant to
Section 5(b) hereof of the conversion of any or all of the shares to be
purchased held by such holder (accompanied by a certificate or certificates for
such shares, duly endorsed or assigned to the Corporation), then (i) the
conversion of such shares to be purchased shall become effective as provided in
Section 5 hereof and (ii) the Corporation's right to Call such shares to be
purchased shall terminate.

                  10. Definitions. As used herein, the following terms shall
have the respective meanings set forth below:

                      "Additional Shares of Stock" means all shares of Common
         Stock issued by the Corporation after the Issue Date, other than (i)
         Common Stock to be issued upon conversion of the Series A Preferred
         Stock, (ii) 500,000 shares of Common Stock reserved for issuance under
         future stock option plans that may be approved and (iii) 2,044,529
         shares of Common Stock reserved or to be reserved for issuance under
         stock options, stock option plans or warrants in effect as of the date
         of the resolution pursuant to which this Certificate of Amendment has
         been adopted.

                      "Affiliate", when used with respect to any Person, means
         (i) if such Person is a corporation, any officer or director thereof
         (other than a director elected pursuant to Section 4 hereof) and any
         Person which is, directly or indirectly, the beneficial owner (by
         itself or as part of any group) of more than five percent (5%) of any
         class of any equity security (within the meaning of the Securities
         Exchange Act of 1934, as amended) thereof, and, if such beneficial
         owner is a partnership, any general partner


                                      -20-

<PAGE>



         thereof, or if such beneficial owner is a corporation, any Person
         controlling, controlled by or under common control with such beneficial
         owner, or any officer or director of such beneficial owner or of any
         corporation occupying any such control relationship, (ii) if such
         Person is a partnership, any general or limited partner thereof, and
         (iii) any other Person which, directly or indirectly, controls or is
         controlled by or is under common control with such Person. For purposes
         of this definition, "control" (including the correlative terms
         "controlling", "controlled by" and "under common control with"), with
         respect to any Person, shall mean possession, directly or indirectly,
         of the power to direct or cause the direction of the management and
         policies of such Person, whether through the ownership of voting
         securities or by contract or otherwise.

                      "Business Day" means any day other than a Saturday, Sunday
         or any day on which banks in the State of New York are authorized or
         obligated to close.

                      "Call" shall have the meaning set forth in Section 9(a).

                      "Call Date" shall have the meaning set forth in Section
         9(b).

                      "Call Notice" shall have the meaning set forth in Section
         9(b).

                      "Common Stock" means the Corporation's Common Stock, par
         value $.01 per share, and shall also include any common stock of the
         Corporation hereafter authorized and any capital stock of the
         Corporation of any other class hereafter authorized which is not
         preferred as to dividends or assets over any other class of capital
         stock of the Corporation or which has ordinary voting power for the
         election of directors of the Corporation.

                      "Conversion Price" means the Conversion Price per share of
         Common Stock into which the Series A Preferred Stock is convertible, as
         such Conversion Price may be adjusted pursuant to Section 5 hereof. The
         initial Conversion Price will be $2.375.

                      "Convertible Securities" means evidences of indebtedness,
         shares of preferred stock or other securities which are convertible
         into or exchangeable, with or without payment of additional
         consideration in cash or property, for Additional Shares of Stock,
         either immediately or upon the occurrence of a specified date or a
         specified event, other than the Series A Preferred Stock.

                      "Designated Entity" means, in connection with the rights
         of any Person holding less than thirty percent (30%), in the aggregate,
         of the originally issued Shares and Conversion Shares (as such terms
         are defined below in the definition

                                      -21-

<PAGE>



         of "Fleming Holders"), (i) as long as any Shares or Conversion Shares
         are held by any Person identified in clause (i) or (ii) of the
         definition of "Fleming Holders", Fleming Capital Management, 320 Park
         Avenue, New York, NY 10022, Attention: Robert L. Burr and (ii) if no
         Shares or Conversion Shares are held by a Person identified in clause
         (i) or (ii) of the definition of "Fleming Holders", the entity
         designated by the Transferee holding the largest number of such shares,
         provided, that such Transferee owns thirty percent (30%) or more, in
         the aggregate, of the originally issued Shares and Conversion Shares
         (in which case such Transferee shall provide notice to the Corporation
         of such entity). For so long as no Shares or Conversion Shares are held
         by any Person identified in clause (i) or (ii) of the definition of
         "Fleming Holders" and no Person holds thirty percent (30%) or more, in
         the aggregate, of the originally issued Shares and Conversion Shares,
         there shall be no Designated Entity. For purposes of this definition of
         "Designated Entity," the calculation of a Person's percentage holdings
         of Conversion Shares shall be determined based upon the number of
         Shares from which such Conversion Shares derived.

                      "Final Surrender Date" shall have the meaning set forth in
         Section 6(e).

                      "Fleming Funds" means Fleming US Discovery Fund III, L.P.
         and Fleming US Discovery Offshore Fund III, L.P.

                      "Fleming Holders" means (i) the Fleming Funds, (ii) any
         Affiliate, officer or employee of an Affiliate or investment fund
         managed by an Affiliate of the Fleming Funds to which the Fleming Funds
         may transfer record and/or beneficial ownership of any shares of Series
         A Preferred Stock (the "Shares") or any shares of Common Stock obtained
         or obtainable upon conversion of the Shares (the "Conversion Shares")
         and (iii) any transferee of Shares or Conversion Shares from a Person
         named in clause (i) or (ii) hereof (provided that such transferee is
         consented to by the Corporation, such consent not to be unreasonably
         withheld), other than a transferee of Shares or Conversion Shares sold
         in either a public offering pursuant to a registration statement under
         the Securities Act or pursuant to Rule 144 under the Securities Act.
         The "Conversion Shares" shall include any capital stock or other
         securities into which Conversion Shares are changed and any capital
         stock or other securities resulting from or comprising a
         reclassification, combination or subdivision of, or a stock dividend
         on, any Conversion Shares.

                      "Fundamental Change" means any of the following events:

                            (i) the sale (or functional equivalent of a sale) of
         all or substantially all of the assets of the Corporation;


                                      -22-

<PAGE>



                            (ii) any event (A) which results in the registration
         of the Corporation's Common Stock under the Securities Exchange Act of
         1934, as amended, to be no longer required; (B) requiring the
         Corporation to make a filing under Section 13(e) of the Securities
         Exchange Act of 1934, as amended; (C) reducing substantially or
         eliminating the public market for shares of Common Stock of the
         Corporation; or (D) causing a delisting of the Corporation's Common
         Stock from the Nasdaq Stock Market;

                            (iii) any consolidation of the Corporation with, or
         merger of the Corporation into, any other person, any merger of another
         person into the Corporation or any other business combination involving
         the Corporation which results in the holders of the Corporation's stock
         immediately prior to giving effect to such transaction owning shares of
         capital stock of the surviving corporation in such transaction
         representing (x) fifty percent (50%) or less of the total voting power
         of all shares of capital stock of such surviving corporation entitled
         to vote generally in the election of directors or (y) fifty percent
         (50%) or less of the total value of all capital stock of such surviving
         corporation; or

                      (iv) the commencement by the Corporation of a voluntary
         case under the Federal bankruptcy laws or any other applicable Federal
         or state bankruptcy, insolvency or similar law; the consent by the
         Corporation to the entry of an order for relief in an involuntary case
         under such law or to the appointment of a receiver, liquidator,
         assignee, custodian, trustee, sequestrator (or other similar official)
         of the Corporation or of any substantial part of its property; any
         assignment by the Corporation for the benefit of its creditors; any
         admission by the Corporation in writing of its inability to pay its
         debts generally as they become due; the entry of a decree or order for
         relief in respect of the Corporation by a court having jurisdiction in
         the premises in an involuntary case under Federal bankruptcy laws or
         any other applicable Federal or state bankruptcy, insolvency or similar
         law appointing a receiver, liquidator, assignee, custodian, trustee,
         sequestrator (or other similar official) of the Corporation or of any
         substantial part of its property, or ordering the winding up or
         liquidation of its affairs, and on account of any such event the
         Corporation shall liquidate, dissolve or wind up; or the liquidation,
         dissolution or winding up of the Corporation under any other
         circumstances.

                  "Issue Date" means, as to any share of Series A Preferred
Stock, the date of original issuance thereof by the Corporation.


                                      -23-

<PAGE>



                      "Junior Securities" mean the Common Stock and any other
         class of capital stock or series of preferred stock existing on the
         date hereof or hereafter created by the Corporation which does not
         expressly provide that it ranks senior to or pari passu with the Series
         A Preferred Stock as to dividends, other distributions, liquidation
         preference or otherwise.

                      "Liquidation Value" means $100 per share with respect to
         the Series A Preferred Stock.

                      "Mandatory Redemption Price" shall have the meaning set
         forth in Section 6(a).

                      "Market Price" means, as to any security on the date of
         determination thereof, the average of the closing prices of such
         security's sales on all principal United States securities exchanges on
         which such security may at the time be listed, or, if there shall have
         been no sales on any such exchange on any day, the last trading price
         of such security on such day, or if such there is no such price, the
         average of the bid and asked prices at the end of such day, on the
         Nasdaq Stock Market, in each such case averaged for a period of thirty
         (30) consecutive calendar days prior to the day when the Market Price
         is being determined. Notwithstanding the foregoing, with respect to the
         issuance of any security by the Corporation in an underwritten public
         offering, the Market Price shall be the per share purchase price paid
         by the underwriters. If at any time such security is not listed on any
         exchange or the Nasdaq Stock Market, the Market Price shall be deemed
         to be the fair value thereof determined by an investment banking firm
         of nationally recognized standing selected by the Board of Directors of
         the Corporation and acceptable to holders of a majority of the Series A
         Preferred Stock, as of the most recent practicable date when the
         determination is to be made, taking into account the value of the
         Corporation as a going concern, and without taking into account any
         lack of liquidity of such security or any discount for a minority
         interest.

                      "Optional Redemption Price" shall have the meaning set
         forth in Section 6(a).

                      "Parity Securities" mean any class of capital stock or
         series of preferred stock existing on the date hereof or hereafter
         created by the Corporation, with the prior written consent of the
         Fleming Holders, which expressly provides that it ranks pari passu with
         the Series A Preferred Stock as to dividends, other distributions,
         liquidation preference or otherwise.

                      "Payment Amount" means such amount as is necessary to
         cause the net present value to equal zero as of any date of all Cash
         Inflows and all Cash

                                      -24-

<PAGE>



         Outflows (each as defined below) with respect to the Series A Preferred
         Stock being repurchased pursuant to Section 6 or held on the date of
         the distribution pursuant to Section 3, as the case may be, when
         calculated with an annual interest rate (compounded annually) equal to
         twelve percent (12%). "Cash Inflows" as used herein means all cash
         payments, including the Payment Amount, received by the holders of the
         Series A Preferred Stock as a dividend or distribution with respect to,
         or as consideration for the sale of, such Series A Preferred Stock
         (whether such payments are received from the Corporation or any other
         Person). "Cash Outflows" as used herein means the sum of all cash
         payments made by the holders of the Series A Preferred Stock to the
         Corporation to acquire such Series A Preferred Stock. (For the
         avoidance of doubt, Cash Inflows and Cash Outflows with respect to any
         Series A Preferred Stock not included in the Series A Preferred Stock
         being repurchased pursuant to Section 6 hereof as part of the
         transaction for which the Payment Amount is then being calculated shall
         not be included in the Cash Inflows and Cash Outflows used to make such
         calculation (for purposes of Section 6 only), and only the Cash Inflows
         and Cash Outflows with respect to the Series A Preferred Stock which
         are then being repurchased pursuant to Section 6 hereof in the
         transaction for which the Payment Amount is then being calculated shall
         be used in the Cash Inflows and Cash Outflows used to make such
         calculation (for purposes of Section 6 only).)

                      "Permitted Preferred Transferee" shall have the meaning
         set forth in Section 4(c).

                      "Person or "person" shall mean an individual, partnership,
         corporation, trust, unincorporated organization, joint venture,
         government or agency, political subdivision thereof, or any other
         entity of any kind.

                      "Preferred Director" or "Preferred Directors" shall have
         the meaning set forth in Section 4(c).

                      "Preferred Liquidation Value", with respect to any share
         of Series A Preferred Stock as of a particular date, means the sum of
         $100 plus an amount equal to any accrued and unpaid dividends on such
         share of Series A Preferred Stock added to the Preferred Liquidation
         Value of such share of Series A Preferred Stock on any Dividend Payment
         Date pursuant to Section 2(a)(ii)(B) and not thereafter paid.

                      "Repurchase Date" shall have the meaning set forth in
         Section 6(d).

                      "Securities Act" shall mean the Securities Act of 1933, as
         amended.


                                      -25-

<PAGE>



                      "Series A Liquidation Preference" shall have the meaning
         set forth in Section 3(a).

                      "Series A Preferred Stock" shall have the meaning set
         forth in the resolution paragraph in the preamble.

                      "Stock Purchase Agreements" mean each of the two Stock
         Purchase Agreements dated as of the date hereof between the Corporation
         and the purchaser listed on the signature page of each such Agreement.

                      "Subsidiary", with respect to any Person, means any
         corporation, association or other entity of which more than 50% of the
         total voting power of shares of stock or other equity interests
         (without regard to the occurrence of any contingency) to vote in the
         election of directors, managers or trustees thereof is, at the time as
         of which any determination is being made, owned or controlled, directly
         or indirectly, by such Person or one or more of its Subsidiaries, or
         both. The term "Subsidiary" or "Subsidiaries" when used herein without
         reference to any particular Person, means a Subsidiary or Subsidiaries
         of the Corporation.

                      "Transferees" shall mean any transferee (except for a
         Fleming Holder) of Shares or Conversion Shares (as such terms are
         defined within the definition of "Fleming Holders") from a Fleming
         Holder. Transferees shall not include a transferee of Shares or
         Conversion Shares sold in either a public offering pursuant to a
         registration statement under the Securities Act or pursuant to Rule 144
         under the Securities Act.

                  11. Notices. Except as may otherwise be provided for herein,
all notices referred to herein shall be in writing, and all notices hereunder
shall be deemed to have been given and received (i) upon receipt, in the case of
a notice of conversion given to the Corporation as contemplated in Section 5(b)
hereof or in the case of a notice of redemption at the holder's option given to
the Corporation as contemplated in Section 6(d) hereof, or (ii) in all other
cases, upon the earlier of (x) receipt of such notice, (y) three Business Days
after the mailing of such notice if sent by registered mail (unless first-class
mail shall be specifically permitted for such notice under the terms hereof) or
(z) the Business Day following sending such notice by overnight courier, in any
case with postage or delivery charges prepaid, addressed: if to the Corporation,
to its offices at 275 North Middletown Road, Pearl River, NY 10965, Attention:
Stephen P. Mandracchia, or to an agent of the Corporation designated as
permitted by the Certificate of Incorporation, or, if to any holder of the
Series A Preferred Stock, to such holder at the address of such holder of the
Series A Preferred Stock as listed in the stock record books of the Corporation,
or to such other address as the Corporation or holder, as the case may be, shall
have designated by notice similarly given.



                                      -26-

<PAGE>



                  [remainder of page intentionally left blank]


                                      -27-

<PAGE>


                  IN WITNESS WHEREOF, we have hereunto executed this Certificate
of Amendment and do affirm the foregoing as true under the penalties of perjury
this ___ day of March, 1999.

                                  HUDSON TECHNOLOGIES, INC.


                                  By:_____________________________________
                                     Name:  Kevin J. Zugibe
                                     Title: Chairman and Chief Executive Officer





                                  By:_____________________________________
                                     Name:  Stephen P. Mandracchia
                                     Title: Secretary


                                      -28-




<PAGE>
================================================================================






                          REGISTRATION RIGHTS AGREEMENT

                                      dated

                                 March 30, 1999


                                      among


                           Hudson Technologies, Inc.,

                      Fleming US Discovery Fund III, L.P.,

                                       and

                  Fleming US Discovery Offshore Fund III, L.P.





================================================================================


<PAGE>


                                TABLE OF CONTENTS

                                                                          Page
                                                                          ----

ARTICLE I    DEMAND REGISTRATIONS............................................1
             1.1        Requests for Registration............................1
             1.2        Limitations on Demand Registrations..................2
             1.3        Effective Registration Statement.....................3
             1.4        Priority on Demand Registrations.....................3
             1.5        Selection of Underwriters............................3
             1.6        Other Registration Rights............................3

ARTICLE II   OTHER REGISTRATIONS.............................................4
             2.1        Right to Piggyback...................................4
             2.2        Priority on Primary Registrations....................4
             2.3        Priority on Secondary Registrations..................4
             2.4        Other Registrations..................................5

ARTICLE III  REGISTRATION PROCEDURES.........................................5

ARTICLE IV   REGISTRATION EXPENSES...........................................9
             4.1        Company's Fees and Expenses..........................9
             4.2        Fees of Counsel to Holders...........................9

ARTICLE V    UNDERWRITTEN OFFERINGS..........................................9
             5.1        Demand Underwritten Offerings........................9
             5.2        Incidental Underwritten Offerings...................10

ARTICLE VI   INDEMNIFICATION................................................10
             6.1        Indemnification by the Company......................10
             6.2        Indemnification by Holders..........................11
             6.3        Indemnification Procedures..........................12
             6.4        Indemnification of Underwriters.....................13
             6.5        Contribution........................................13
             6.6        Timing of Indemnification Payments..................14

ARTICLE VII  RULE 144.......................................................14

ARTICLE VIII  PARTICIPATION IN UNDERWRITTEN REGISTRATIONS...................15

ARTICLE IX    MERGERS, ETC..................................................15


                                       -i-

<PAGE>


                                                                          Page
                                                                          ----

ARTICLE X    DEFINITIONS....................................................15

ARTICLE XI   MISCELLANEOUS..................................................17
             11.1       No Inconsistent Agreements..........................17
             11.2       Adjustments Affecting Registrable Securities........17
             11.3       Remedies............................................18
             11.4       Amendments and Waivers..............................18
             11.5       Successors and Assigns..............................18
             11.6       Notices.............................................18
             11.7       Headings............................................19
             11.8       Gender..............................................19
             11.9       Invalid Provisions..................................20
             11.10      Governing Law.......................................20
             11.11      Counterparts........................................20




                                      -ii-

<PAGE>


                          REGISTRATION RIGHTS AGREEMENT


                  This Registration Rights Agreement is dated as of March 30,
1999, among Hudson Technologies, Inc., a New York corporation (the "Company"),
Fleming US Discovery Fund III, L.P. and Fleming US Discovery Offshore Fund III,
L.P. (collectively, the "Fleming Funds"). The Fleming Funds, any Fleming Holder
and any Transferee are collectively referred to herein as the "Investors" and,
individually, an "Investor." Capitalized terms used and not otherwise defined
herein have the respective meanings ascribed thereto in Article X.


                               W I T N E S S E T H:


                  WHEREAS, simultaneously herewith, the Fleming Funds have
purchased an aggregate of 65,000 shares of Series A Preferred Stock pursuant to
the terms of the Stock Purchase Agreements;

                  WHEREAS, it is a condition to the consummation of the
transactions contemplated by the Stock Purchase Agreements that the Company and
the Fleming Funds enter into this Agreement whereby the Company shall grant, and
the Investors shall obtain, the rights relating to the registration of the
Registrable Securities under the Securities Act, as set forth in this Agreement;

                  NOW, THEREFORE, the parties hereto hereby agree as follows:


                                    ARTICLE I
                              DEMAND REGISTRATIONS

                  1.1 Requests for Registration. Subject to Section 1.2, at any
time and from time to time on or after the date hereof, the Fleming Holders may
request registration under the Securities Act of all or part of their
Registrable Securities (i) on Form S-1 or any similar long- form registration
("Long-Form Demand Registrations"), or (ii) on Form S-3 or any similar
short-form registration ("Short-Form Demand Registrations") if the Company
qualifies to use such short form (and the Company will use its best efforts to
make short-form registration statements available for the sale of Registrable
Securities). Thereafter, the Company will use its best efforts to promptly
effect the registration of such Registrable Securities under the Securities Act
on the form requested by the holder or holders making such registration request.
All registrations requested pursuant to this Section 1.1 are referred to herein
as "Demand Registrations." Upon receipt of a request for a Demand Registration,
the Company will give prompt written notice (in


<PAGE>



any event within five (5) Business Days after its receipt of such request) of
the request for a Demand Registration to all holders of Registrable Securities
not making such request and will include in such Demand Registration all
Registrable Securities with respect to which the Company has received written
requests for inclusion therein within ten (10) days after the receipt of the
Company's notice. The holders of the Registrable Securities making any such
registration request may, at any time prior to the effective date of the
registration statement relating to any Demand Registration, revoke such Demand
Registration request by providing written notice to the Company. In the event
the holders of the Registrable Securities exercise such revocation right without
reasonable basis after the Company has filed a registration statement pursuant
to such request, such holders shall bear the Registration Expenses (as defined
below) incurred by the Company in connection with any subsequent Long-Form
Demand Registration request made hereunder. For purposes of this Section 1.1,
the term "reasonable basis" means (i) the occurrence of any event or series of
events that become known to such holders after making their Demand Registration
request and that, in the reasonable judgment of such holders, constitute a
material adverse change in the assets, properties, liabilities, business,
affairs, results of operations, condition (financial or otherwise) or prospects
of the Company on a consolidated basis, (ii) with respect to the period from the
date of any request for the Demand Registration to the date of such revocation,
a reduction of ten percent (10%) or more in the market price per share of any
class of Registrable Securities (calculated as the average of the closing price
for the five most recent consecutive trading days) or (iii) receipt by the
Company of the opinion of the managing underwriters referred to in Section 1.4
and reduction pursuant thereto of ten percent (10%) of the Registrable
Securities with respect to which a Demand Registration had been requested.

                  1.2 Limitations on Demand Registrations. (a) The holders of
the Registrable Securities shall be entitled to (i) one (1) Long-Form Demand
Registration and (ii) any number of Short-Form Demand Registrations.

                  (b) The Company shall be entitled to postpone for a reasonable
period of time not to exceed forty-five (45) days the filing of any registration
statement otherwise required to be prepared and filed by it if, at the time it
receives a Demand Registration request, the Board of Directors of the Company
determines, in its reasonable good faith judgment, that such registration would
materially interfere with a business or financial transaction of substantial
importance to the Company (other than an underwritten public offering of its
securities), including, without limitation, any such transaction involving a
material acquisition, consolidation, merger or corporate reorganization then
pending or proposed by its Board of Directors involving the Company, and the
Company promptly gives the holders of the Registrable Securities written notice
of such determination, containing a general statement of the reasons for such
postponement and an approximation of the anticipated delay; provided, however,
that the Company shall not be entitled to postpone filing a registration
statement in response to a Demand Registration for the twelve (12) months
following the expiration of such forty-five day period. In the event the filing
of any registration statement is postponed pursuant to this paragraph, the
holder or holders of the Registrable Securities making a registration request


                                       -2-

<PAGE>



shall have the right to withdraw such Demand Registration request by giving
written notice to the Company within thirty (30) days after receipt of the
notice of postponement (and, in the event of such withdrawal, the right of the
holders of the Registrable Securities to such Demand Registration and the right
of the Company to postpone filing shall be reinstated).

                  1.3 Effective Registration Statement. A Demand Registration
requested pursuant to Section 1.1 of this Agreement shall not be deemed to have
been effected (i) unless a registration statement with respect thereto has
become effective, (ii) if after it has become effective, such registration is
interfered with by any stop order, injunction or other order or requirement of
the Securities and Exchange Commission (the "SEC") or other governmental agency
or court for any reason, and the Registrable Securities covered thereby have not
been sold, or (iii) if the conditions to closing specified in the purchase
agreement or underwriting agreement entered into in connection with such
registration are not satisfied by reason of (x) a failure by or inability of the
Company to satisfy any thereof, or (y) the occurrence of an event outside the
control of the holders of Registrable Securities. In addition, a Demand
Registration requested pursuant to Section 1.1 of this Agreement shall not be
deemed to have been effected if holders of Registrable Securities are not able
to register and sell at least 80% of the amount of Registrable Securities
requested to be included in such registration; provided, however, that in no
case shall the holders of the Registrable Securities be entitled to more than
one additional Long- Form Demand Registration as a result of the inability to
register and sell such percentage of Registrable Securities.

                  1.4 Priority on Demand Registrations. The Company will not
include in any Demand Registration any securities which are not Registrable
Securities without the written consent of the Fleming Holders, except to the
extent expressly required by Section 2 of the DuPont Agreement. If other
securities are permitted to be included in a Demand Registration which is an
underwritten offering and the managing underwriters advise the Company in
writing that in their opinion the number of Registrable Securities exceeds the
number of Registrable Securities which can be sold in such offering within a
price range acceptable to the Fleming Holders, the Company will include in such
registration, prior to the inclusion of any securities which are not Registrable
Securities, the number of Registrable Securities requested to be included which
in the opinion of such underwriters can be sold, pro rata among the respective
holders on the basis of the amount of Registrable Securities requested to be
offered thereby.

                  1.5 Selection of Underwriters. The Fleming Holders will have
the right to select the underwriters and the managing underwriters to administer
a Demand Registration and such underwriters and managing underwriters shall be
reasonably acceptable to the Company. The terms of any underwriting agreement
shall be reasonably acceptable to the Company.

                  1.6 Other Registration Rights. Except as provided in this
Agreement, the DuPont Agreement or as otherwise consented to in writing by the
Fleming Holders, the Company will not grant to any Person the right to request
the Company to register any equity


                                       -3-

<PAGE>



securities of the Company, or any securities convertible, exchangeable or
exercisable for or into such securities ("Other Securities"), other than
piggyback registration rights entitling the holder thereof to participate in
Company-initiated registrations with holders of Registrable Securities;
provided, however, that the Registrable Securities shall have priority over
Other Securities in any such Company-initiated registration.


                                   ARTICLE II
                               OTHER REGISTRATIONS

                  2.1 Right to Piggyback. Except for a registration on Form S-8
of shares issued pursuant to the Company's 1997 Stock Option Plan, whenever the
Company proposes to register any of its securities under the Securities Act
(other than pursuant to a Demand Registration), and the registration form to be
used may be used for the registration of Registrable Securities (a "Piggyback
Registration"), the Company will give prompt written notice (in any event within
five (5) Business Days after its receipt of notice of any exercise of other
demand registration rights) to all holders of Registrable Securities of its
intention to effect such a registration and will include in such registration
all Registrable Securities with respect to which the Company has received
written requests for inclusion therein within ten (10) days after the receipt of
the Company's notice.

                  2.2 Priority on Primary Registrations. If a Piggyback
Registration is an underwritten primary registration on behalf of the Company,
and the managing underwriters advise the Company in writing that in their
opinion the number of securities requested to be included in such registration
exceeds the number which can be sold in such offering, the Company will include
in such registration (i) first, the securities the Company proposes to sell,
(ii) second, the Registrable Securities requested to be included in such
registration, provided, that if the managing underwriters in good faith
determine that a lower number of Registrable Securities should be included, then
the Company shall be required to include in the underwriting only that lower
number of Registrable Securities, and the holders of Registrable Securities who
have requested registration shall participate in the underwriting pro rata based
upon their total ownership, on a fully diluted basis, of Registrable Securities
requested to be included in such registration and (iii) third, other securities
requested to be included in such registration, provided, that if such request
arises from rights granted pursuant to the DuPont Agreement, and the managing
underwriters have rendered the opinion referred to in Section 1.4 of this
Agreement, then the securities that are the subject of such request may be
treated by the Company, for purposes of this Section 2.2 only, as Registrable
Securities and included in such registration in accordance with clause (ii)
hereof.

                  2.3 Priority on Secondary Registrations. If a Piggyback
Registration is an underwritten secondary registration on behalf of holders of
the Company's securities, and the managing underwriters advise the Company in
writing that in their opinion the number of


                                       -4-

<PAGE>



securities requested to be included in such registration exceeds the number
which can be sold in such offering, the Company will include in such
registration (i) first, the securities requested to be included therein by the
holders requesting such registration, (ii) second, the Registrable Securities
requested to be included in such registration, provided, that if the managing
underwriters in good faith determine that a lower number of Registrable
Securities should be included, then the Company shall be required to include in
the underwriting only that lower number of Registrable Securities, and the
holders of Registrable Securities who have requested registration shall
participate in the underwriting pro rata based upon their total ownership, on a
fully diluted basis, of Registrable Securities requested to be included in such
registration and (iii) third, other securities requested to be included in such
registration.

                  2.4 Other Registrations. If the Company has previously filed a
registration statement for a Long-Form Demand Registration with respect to
Registrable Securities pursuant to Article I of this Agreement or pursuant to
this Article II, and if such previous registration has not been withdrawn or
abandoned, the Company will not file or cause to be effected any other
registration of any of its equity securities or securities convertible,
exchangeable or exercisable for or into its equity securities under the
Securities Act (except on Form S-4 or S-8 or any successor form), whether on its
own behalf or at the request of any holder or holders of such securities other
than the holders of the Registrable Securities, until a period of at least six
(6) months elapsed from the effective date of such previous registration.

                                   ARTICLE III
                             REGISTRATION PROCEDURES

                  Whenever the holders of Registrable Securities have requested
that any Registrable Securities be registered pursuant to this Agreement, the
Company will use its best efforts to effect the registration and the sale of
such Registrable Securities in accordance with the intended method of
disposition thereof, and pursuant thereto the Company will as expeditiously as
possible or, in the case of clause (q) below, will not:

                  (a) promptly prepare and file with the SEC a registration
statement with respect to such Registrable Securities (such registration
statement to include all information which the holders of the Registrable
Securities to be registered thereby shall reasonably request) and use its best
efforts to promptly cause such registration statement to become effective,
provided that at least five days before filing a registration statement or
prospectus or any amendments or supplements thereto, the Company will (i)
furnish to counsel selected by the Fleming Holders, copies of all such documents
proposed to be filed, and the Company shall not file any such documents to which
such counsel shall have reasonably objected on the grounds that such document
does not comply in all material respects with the requirements of the Securities
Act or of the rules or regulations thereunder, and (ii) notify each holder of
Registrable Securities covered by such registration statement of (x) any request
by the SEC to amend such registration statement or amend or supplement any
prospectus or (y) any stop order issued or


                                       -5-

<PAGE>



threatened by the SEC, and take all reasonable actions required to prevent the 
entry of such stop order or to remove it if entered;

                  (b) (i) promptly prepare and file with the SEC such amendments
and supplements to such registration statement and the prospectus used in
connection therewith as may be necessary to keep such registration statement
effective for a period of not less than 180 days (except that such 180-day
period shall be extended (x) by the length of any period that a stop order or
similar proceeding is in effect which prohibits the distribution of the
Registrable Securities, and (y) by the number of days during the period from and
including the date on which each seller of Registrable Securities shall have
received a notice delivered pursuant to clause (f) below until the date when
such seller shall have received a copy of the supplemented or amended prospectus
contemplated by clause (f) below), and (ii) comply with the provisions of the
Securities Act with respect to the disposition of all securities covered by such
registration statement during such period in accordance with the intended
methods of disposition by the sellers thereof set forth in such registration
statement;

                  (c) as soon as reasonably possible furnish to each seller of
Registrable Securities, without charge, such number of conformed copies of such
registration statement, each amendment and supplement thereto, the prospectus
included in such registration statement (including each preliminary prospectus
and prospectus supplement and, in each case, including all exhibits) and such
other documents as such seller may reasonably request, all in conformity with
the requirements of the Securities Act, in order to facilitate the disposition
of the Registrable Securities owned by such seller;

                  (d) use its best efforts promptly to register or qualify the
Shares under such other securities or blue sky laws of such jurisdictions as any
seller thereof shall reasonably request, to keep such registration or
qualification in effect for so long as such registration statement remains in
effect and to do any and all other acts and things which may be reasonably
necessary or advisable to enable such seller to consummate the disposition in
such jurisdictions of the Registrable Securities owned by such seller, provided,
however, that the Company will not be required to (i) qualify generally to do
business as a foreign corporation in any jurisdiction where it would not
otherwise be required to qualify but for this clause (d), (ii) subject itself to
taxation in any such jurisdiction or (iii) consent to general service of process
in any such jurisdiction;

                  (e) furnish to each seller of Registrable Securities a signed
copy, addressed to such seller (and the underwriters, if any) of an opinion of
counsel for the Company or special counsel to the selling stockholders, dated
the effective date of such registration statement (and, if such registration
statement includes an underwritten public offering, dated the date of the
closing under the underwriting agreement), reasonably satisfactory in form and
substance to counsel selected by the Fleming Holders, covering substantially the
same matters with respect to such registration statement (and the prospectus
included therein) as are customarily covered in


                                       -6-

<PAGE>



opinions of issuer's counsel delivered to the underwriters in underwritten
public offerings, and such other legal matters as the seller (or the
underwriters, if any) may reasonably request;

                  (f) promptly notify each seller of Registrable Securities, at
a time when a prospectus relating to the Shares is required to be delivered
under the Securities Act, of the Company's becoming aware that the prospectus
included in such registration statement, as then in effect, contains an untrue
statement of a material fact or omits to state any material fact required to be
stated therein or necessary to make the statements therein not misleading in
light of the circumstances under which they were made, and, at the request of
any such seller, promptly prepare and furnish such seller a reasonable number of
copies of a supplement to or an amendment of such prospectus as may be necessary
so that, as thereafter delivered to the purchasers of such Registrable
Securities, such prospectus shall not include an untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements therein not misleading in light of the circumstances
under which they were made;

                  (g) cause all of the Shares to be listed on each securities
exchange on which similar securities issued by the Company are then listed or,
if there shall then be no such listing, to be accepted for quotation as either a
National Market Security or SmallCap Market Security on The NASDAQ Stock Market;

                  (h) provide a transfer agent and registrar for all of the
Shares not later than the effective date of such registration statement;

                  (i) enter into such customary arrangements and take all such
other actions as the Fleming Holders or the underwriters, if any, reasonably
request in order to expedite or facilitate the disposition of the Shares;

                  (j) make available for inspection by (i) any holder of thirty
percent (30%) or more of Registrable Securities or (ii) a Designated Entity, any
underwriter participating in any disposition pursuant to such registration
statement and any attorney, accountant or other agent retained by any such
holder, Designated Entity or underwriter, all financial and other records,
pertinent corporate documents and properties of the Company, and cause the
Company's officers, directors, employees and independent accountants to supply
all information reasonably requested by any such holder, Designated Entity,
underwriter, attorney, accountant or agent in connection with such registration
statement; provided, that no such holder, Designated Entity, underwriter,
attorney, accountant or agent shall inspect any non-public information of the
Company unless such Person has executed a confidentiality agreement;

                  (k) cause the Company's officers to make presentations to
potential purchasers of the Shares, as reasonably requested by any seller of
Registrable Securities or any


                                       -7-

<PAGE>



underwriter participating in any disposition pursuant to such registration 
statement in connection with any Long-Form Demand Registration;

                  (l) subject to other provisions hereof, use its best efforts
to cause the Shares to be registered with or approved by such other governmental
agencies or authorities or self-regulatory organizations as may be necessary to
enable the sellers thereof to consummate the disposition of the Shares;

                  (m) use its best efforts to obtain a "comfort" letter, dated
the effective date of such registration statement (and, if such registration
includes an underwritten offering, dated the date of the closing under the
underwriting agreement), signed by the independent public accountants who have
certified the Company's financial statements, addressed to each seller, and to
the underwriters, if any, covering substantially the same matters with respect
to such registration statement (and the prospectus included therein) and with
respect to events subsequent to the date of such financial statements, as are
customarily covered in accountants' letters delivered to the underwriters in
underwritten public offerings of securities and such other financial matters as
such seller (or the underwriters, if any) may reasonably request; provided,
that, notwithstanding the foregoing, the Company shall have no obligation to
obtain a "comfort" letter in a non-underwritten offering;

                  (n) otherwise use its best efforts to comply with all
applicable rules and regulations of the SEC and make available to its
securityholders, in each case as soon as practicable, an earnings statement
covering a period of at least twelve months, beginning after the effective date
of the registration statement, which earnings statement shall satisfy the
provisions of Section 11(a) of the Securities Act;

                  (o) permit any holder of Registrable Securities, which holder,
in the sole judgment exercised in good faith of such holder, might be deemed to
be a controlling person of the Company (within the meaning of the Securities Act
or the Exchange Act), to participate in the preparation of any registration
statement covering such holder's Registrable Securities and to include therein
material, furnished to the Company in writing, which in the reasonable judgment
of such holder should be included and which is reasonably acceptable to the
Company;

                  (p) use every reasonable effort to obtain the lifting at the
earliest possible time of any stop order suspending the effectiveness of any
registration statement or of any order preventing or suspending the use of any
preliminary prospectus;

                  (q) at any time file or make any amendment to a registration
statement, or any amendment of or supplement to a prospectus (including
amendments of the documents incorporated by reference into the prospectus), of
which each seller of Registrable Securities or the managing underwriters shall
not have previously been advised and furnished a copy or to


                                       -8-

<PAGE>



which the sellers of Registrable Securities, the managing underwriters, or 
counsel for such sellers or for the underwriters shall reasonably object; and

                  (r) make such representations and warranties (subject to
appropriate disclosure schedule exceptions) to sellers of Registrable Securities
and the underwriters, if any, in form, substance and scope as are customarily
made by issuers to underwriters and selling holders, as the case may be, in
underwritten public offerings of substantially the same type; provided, that,
notwithstanding the foregoing, the Company shall have no obligation to make such
representations and warranties in a non-underwritten offering.


                                   ARTICLE IV
                              REGISTRATION EXPENSES

                  4.1 Company's Fees and Expenses. All expenses incident to the
Company's performance of or compliance with this Agreement, including without
limitation, all registration and filing fees, fees and expenses of compliance
with securities or blue sky laws, printing expenses, messenger and delivery
expenses, fees and expenses for listing or quoting the Shares on each securities
exchange or The NASDAQ Stock Market on which similar securities issued by the
Company are then listed or quoted, and fees and disbursements of counsel for the
Company, any transfer agent and all independent certified public accountants,
underwriters (excluding discounts and selling commissions) and other Persons
retained by the Company in connection with any Demand Registration or any
Piggyback Registration (all such expenses being herein called "Registration
Expenses"), will be paid by the Company.

                  4.2 Fees of Counsel to Holders. Subject to the sixth sentence
of Section 1.1, in connection with each registration hereunder, the Company will
reimburse the holders of Registrable Securities covered by such registration for
the reasonable fees and disbursements of one counsel chosen by the Fleming
Holders.


                                    ARTICLE V
                             UNDERWRITTEN OFFERINGS

                  5.1 Demand Underwritten Offerings. If requested by the
underwriters for any underwritten offerings of Registrable Securities pursuant
to a Demand Registration, the Company will enter into an underwriting agreement
with such underwriters for such offering, such agreement to be reasonably
satisfactory in substance and form to the Fleming Holders and the underwriters,
and to contain such representations and warranties by the Company and such other
terms as are generally included in agreements of this type, including, without
limitation, indemnities customarily included in such agreements. The holders of
Registrable Securities to be distributed by such underwriters may be parties to
such underwriting agreement and may, at


                                       -9-

<PAGE>



their option, require that any or all of the representations and warranties by,
and the other agreements on the part of, the Company to and for the benefit of
such underwriters shall also be made to and for the benefit of such holders of
Registrable Securities and that any or all of the conditions precedent to the
obligations of such underwriters under such underwriting agreement be conditions
precedent to the obligations of such holders of Registrable Securities. The
Company shall cooperate with any such holder of Registrable Securities in order
to limit any representations or warranties to, or agreements with, the Company
or the underwriters to be made by such holder only to those representations,
warranties or agreements regarding such holder, such holder's Registrable
Securities and such holder's intended method of distribution and any other
representation required by law.

                  5.2 Incidental Underwritten Offerings. If the Company at any
time proposes to register any of its securities under the Securities Act as
contemplated by Article II of this Agreement and such securities are to be
distributed by or through one or more underwriters, the Company will, if
requested by any holder of Registrable Securities as provided in Article II of
this Agreement, arrange for such underwriters to include all the Registrable
Securities to be offered and sold by such holder, subject to the limitations set
forth in Article II hereof, among the securities to be distributed by such
underwriters. The holders of Registrable Securities to be distributed by such
underwriters shall be parties to the underwriting agreement between the Company
and such underwriters, and may, at their option, require that any or all of the
representations and warranties by, and the other agreements on the part of, the
Company to and for the benefit of such underwriters shall also be made to and
for the benefit of such holders of Registrable Securities and that any or all of
the conditions precedent to the obligations of such underwriters under such
underwriting agreement be conditions precedent to the obligations of such
holders of Registrable Securities. The Company shall cooperate with any such
holder of Registrable Securities in order to limit any representations or
warranties to, or agreements with, the Company or the underwriters to be made by
such holder only to those representations, warranties or agreements regarding
such holder, such holder's Registrable Securities and such holder's intended
method of distribution and any other representation required by law.


                                   ARTICLE VI
                                 INDEMNIFICATION

                  6.1 Indemnification by the Company. The Company agrees to
indemnify and hold harmless, to the extent permitted by law, each of the holders
of any Registrable Securities covered by any registration statement prepared
pursuant to this Agreement, each other Person, if any, who controls such holder
within the meaning of the Securities Act or the Exchange Act, and each of their
respective directors, officers and general partners, as follows:

                           (i) against any and all loss, liability, claim,
                  damage and expense arising out of or based upon an untrue
                  statement or alleged untrue statement of a


                                      -10-

<PAGE>



                  material fact contained in any registration statement (or any
                  amendment or supplement thereto), including all documents
                  incorporated therein by reference, or in any preliminary
                  prospectus or prospectus (or any amendment or supplement
                  thereto) or the omission or alleged omission therefrom of a
                  material fact required to be stated therein or necessary to
                  make the statements therein, in light of the circumstances
                  under which they were made, not misleading;

                           (ii) against any and all loss, liability, claim,
                  damage and expense to the extent of the aggregate amount paid
                  in settlement of any litigation, investigation or proceeding
                  by any governmental agency or body, commenced or threatened,
                  or of any claim whatsoever based upon any such untrue
                  statement or omission or any such alleged untrue statement or
                  omission, if such settlement is effected with the written
                  consent of the Company; and

                           (iii) against any and all expense incurred by them in
                  connection with investigating, preparing or defending against
                  any litigation, investigation or proceeding by any
                  governmental agency or body, commenced or threatened, or any
                  claim whatsoever based upon any such untrue statement or
                  omission or any such alleged untrue statement or omission, to
                  the extent that any such expense is not paid under clause (i)
                  or (ii) above;

provided, that this indemnity does not apply to any loss, liability, claim,
damage or expense to the extent arising out of an untrue statement or alleged
untrue statement or omission or alleged omission made in reliance upon and in
conformity with written information furnished to the Company by or on behalf of
any holder expressly for use in the preparation of any registration statement
(or any amendment or supplement thereto), including all documents incorporated
therein by reference, or in any preliminary prospectus or prospectus (or any
amendment or supplement thereto); and provided further, that the Company will
not be liable to any holder under the indemnity agreement in this Section 6.1,
with respect to any preliminary prospectus or the final prospectus or the final
prospectus as amended or supplemented, as the case may be, to the extent that
any such loss, liability, claim, damage or expense of such controlling Person or
holder results from the fact that such holder sold Registrable Securities to a
Person to whom there was not sent or given, at or prior to the written
confirmation of such sale, a copy of the final prospectus or of the final
prospectus as then amended or supplemented, whichever is most recent, if the
Company has previously and timely furnished copies thereof to such holder. Such
indemnity shall remain in full force and effect regardless of any investigation
made by or on behalf of such holder or any such director, officer, general
partner, or other controlling Person and shall survive the transfer of such
securities by such seller.

                  6.2 Indemnification by Holders. In connection with any
registration statement in which a holder of Registrable Securities is
participating, each such holder agrees to indemnify and hold harmless (in the
same manner and to the same extent as set forth in Section


                                      -11-

<PAGE>



6.1 of this Agreement), to the extent permitted by law, the Company and its
directors, officers and controlling Persons, and their respective directors,
officers and general partners, with respect to any statement or alleged
statement in or omission or alleged omission from such registration statement,
any preliminary, final or summary prospectus contained therein, or any amendment
or supplement thereto, if such statement or alleged statement or omission or
alleged omission was made in reliance upon and in conformity with written
information furnished to the Company by or on behalf of such holder,
specifically stating that it is for use in the preparation of such registration
statement, preliminary, final or summary prospectus or amendment or supplement.
Such indemnity shall remain in full force and effect regardless of any
investigation made by or on behalf of the Company, or such holder, as the case
may be, or any of their respective directors, officers, controlling Persons or
general partners and shall survive the transfer of such securities by such
holder. The obligations of each holder of Registrable Securities pursuant to
this Section 6.2 are to be several and not joint; provided, that, with respect
to each claim pursuant to this Section 6.2, each such holder's maximum liability
under this Section shall be limited to an amount equal to the net proceeds
actually received by such holder (after deducting any underwriting discount and
expenses) from the sale of Registrable Securities being sold pursuant to such
registration statement or prospectus by such holder.

                  6.3 Indemnification Procedures. Promptly after receipt by an
indemnified party hereunder of written notice of the commencement of any action
or proceeding involving a claim referred to in Section 6.1 or Section 6.2 of
this Agreement, such indemnified party will, if a claim in respect thereof is to
be made against an indemnifying party, give written notice to the latter of the
commencement of such action; provided, that the failure of any indemnified party
to give notice as provided herein shall not relieve the indemnifying party of
its obligations under Section 6.1 or Section 6.2 of this Agreement except to the
extent that the indemnifying party is actually prejudiced by such failure to
give notice. In case any such action is brought against an indemnified party,
the indemnifying party will be entitled to participate in and to assume the
defense thereof, jointly with any other indemnifying party similarly notified,
to the extent that it may wish, with counsel reasonably satisfactory to such
indemnified party, and after notice from the indemnifying party to such
indemnified party of its election so to assume the defense thereof, the
indemnifying party will not be liable to such indemnified party for any legal or
other expenses subsequently incurred by the latter in connection with the
defense thereof, unless in such indemnified party's judgment a conflict of
interest between such indemnified and indemnifying parties may exist in respect
of such claim, in which case the indemnifying party shall not be liable for the
fees and expenses of (i) more than one counsel for all holders of Registrable
Securities, selected by the Fleming Holders, or (ii) more than one counsel for
the Company in connection with any one action or separate but similar or related
actions. An indemnifying party who is not entitled to, or elects not to, assume
the defense of a claim will not be obligated to pay the fees and expenses of
more than one counsel for all parties indemnified by such indemnifying party
with respect to such claim, unless in the judgment of any indemnified party a
conflict of interest may exist between such indemnified party and any other of
such indemnified parties with respect to such claim, in which event the
indemnifying party shall be


                                      -12-

<PAGE>



obligated to pay the fees and expenses of such additional counsel or counsels.
The indemnifying party will not, without the prior written consent of each
indemnified party, settle or compromise or consent to the entry of any judgment
in any pending or threatened claim, action, suit or proceeding in respect of
which indemnification may be sought hereunder (whether or not such indemnified
party or any Person who controls such indemnified party is a party to such
claim, action, suit or proceeding), unless such settlement, compromise or
consent includes an unconditional release of such indemnified party from all
liability arising out of such claim, action, suit or proceeding. Notwithstanding
anything to the contrary set forth herein, and without limiting any of the
rights set forth above, in any event any party will have the right to retain, at
its own expense, counsel with respect to the defense of a claim.

                  6.4 Indemnification of Underwriters. The Company and each
holder of Registrable Securities requesting registration shall provide for the
foregoing indemnity in any underwriting agreement with respect to any required
registration or other qualification of securities under any Federal or state law
or regulation of any governmental authority other than the Securities Act.

                  6.5 Contribution. If the indemnification provided for in
Sections 6.1 and 6.2 of this Agreement is unavailable or insufficient to hold
harmless an indemnified party under such Sections, then each indemnifying party
shall contribute to the amount paid or payable to such indemnified party as a
result of the losses, claims, damages or liabilities referred to in Section 6.1
or Section 6.2 of this Agreement in such proportion as is appropriate to reflect
the relative fault of the indemnifying party on the one hand, and the
indemnified party on the other, in connection with statements or omissions which
resulted in such losses, liabilities, claims, damages or expenses, as well as
any other relevant equitable considerations, including, without limitation, the
relative benefits received by each party from the offering of the securities
covered by such registration statement, the parties' relative knowledge and
access to information concerning the matter with respect to which the claim was
asserted and the opportunity to correct and prevent any statement or omission.
The relative fault shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact relates to information
supplied by the indemnifying party or the indemnified party and the parties'
relative intent, knowledge, access to information and opportunity to correct or
prevent such untrue statements or omission. The parties hereto agree that it
would not be just and equitable if contributions pursuant to this Section 6.5
were to be determined by pro rata or per capita allocation (even if the
underwriters were treated as one entity for such purpose) or by any other method
of allocation which does not take account of the equitable considerations
referred to in the first sentence of this Section 6.5. The amount paid to an
indemnified party as a result of the losses, claims, damages or liabilities
referred to in the first sentence of this Section 6.5 shall be deemed to include
any legal or other expenses reasonably incurred by such indemnified party in
connection with investigating or defending any action or claim (which shall be
limited as provided in Section 6.3 of this Agreement if the indemnifying party
has assumed the defense of any such action in accordance with the provisions
thereof)


                                      -13-

<PAGE>



which is the subject of this Section 6.5. Promptly after receipt by an
indemnified party under this Section 6.5 of notice of the commencement of any
action against such party in respect of which a claim for contribution may be
made against an indemnifying party under this Section 6.5, such indemnified
party shall notify the indemnifying party in writing of the commencement thereof
if the notice specified in Section 6.3 of this Agreement has not been given with
respect to such action; provided, that the failure to so notify the indemnifying
party shall not relieve the indemnifying party from any liability which it may
otherwise have to any indemnified party under this Section 6.5, except to the
extent that the indemnifying party is actually prejudiced by such failure to
give notice. The Company and each holder of Registrable Securities agrees with
each other and the underwriters of the Registrable Securities, if requested by
such underwriters, that (i) the underwriters' portion of such contribution shall
not exceed the underwriting discount and (ii) the amount of such contribution
shall not exceed an amount equal to the net proceeds actually received by such
indemnifying party from the sale of Registrable Securities in the offering to
which the losses, liabilities, claims, damages or expenses of the indemnified
parties relate. No Person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any Person who was not guilty of such fraudulent
misrepresentation.

                  6.6 Timing of Indemnification Payments. The indemnification
required by this Article VI shall be made by periodic payments of the amount
thereof during the course of the investigation or defense, as and when bills are
received or expense, loss, damage or liability is incurred.


                                   ARTICLE VII
                                    RULE 144

                  The Company covenants that it will file the reports required
to be filed by it under the Securities Act and the Exchange Act and the rules
and regulations adopted by the SEC thereunder (or, if the Company is not
required to file such reports, it will, upon the request of any holder of
Registrable Securities, make publicly available other information), and it will
take such further action as any holder of Registrable Securities may reasonably
request, all to the extent required from time to time to enable such holder to
sell shares of Registrable Securities without registration under the Securities
Act within the limitation of the exemption provided by (i) Rule 144 or Rule 144A
under the Securities Act, as such Rules may be amended from time to time, or
(ii) any similar rule or regulation hereafter adopted by the SEC. Upon the
request of any holder of Registrable Securities, the Company will deliver to
such holder a written statement as to whether it has complied with such
requirements.




                                      -14-

<PAGE>



                                  ARTICLE VIII
                   PARTICIPATION IN UNDERWRITTEN REGISTRATIONS

                  No Person may participate in any underwritten registration
hereunder unless such Person (i) agrees to sell such Person's securities on the
basis provided in any underwriting arrangements approved by the Person or
Persons entitled hereunder to approve such arrangements and (ii) completes and
executes all questionnaires, powers of attorney, indemnities, underwriting
agreements and other documents required under the terms of such underwriting
arrangements and consistent with the provisions of this Agreement.


                                   ARTICLE IX
                                  MERGERS, ETC.

                  The Company shall not, directly or indirectly, enter into any
merger, consolidation or reorganization in which the Company shall not be the
surviving corporation unless the proposed surviving corporation shall, prior to
such merger, consolidation, or reorganization, agree in writing to assume the
obligations of the Company under this Agreement, and for that purpose references
hereunder to "Registrable Securities" shall be deemed to be references to the
securities that the Investors or the holders of Registrable Securities would be
entitled to receive in exchange for Registrable Securities under any such
merger, consolidation or reorganization.


                                    ARTICLE X
                                   DEFINITIONS


                  As used in this Agreement, the following defined terms shall
have the meanings set forth below:

                  "Business Day" means a day other than Saturday, Sunday or any
day on which banks in the State of New York are authorized or obligated to
close.

                  "Common Stock" means the Company's Common Stock, par value 
$.01 per share.

                  "Company" shall have the meaning set forth in the first 
paragraph hereof.

                  "Demand Registrations" shall have the meaning set forth in 
Section 1.1(a) hereof.



                                      -15-

<PAGE>



                  "Designated Entity" means, in connection with the rights held
by holders of less than thirty percent (30%) of Registrable Securities, (i) as
long as any shares of Registrable Securities are held by any Person identified
in clause (i) or (ii) of the definition of "Fleming Holders" set forth in the
Stock Purchase Agreements, Fleming Capital Management, 320 Park Avenue, New
York, NY 10022, Attention: Robert L. Burr and (ii) if no shares of Registrable
Securities are held by a Person identified in clause (i) or (ii) of the
definition of "Fleming Holders" set forth in the Stock Purchase Agreements, the
entity designated by the Transferee who holds the largest number of such shares,
provided, that such Transferee owns thirty percent (30%) or more of the
Registrable Securities (in which case such Transferee shall provide notice to
the Company of such entity). For so long as no Registrable Securities are held
by any Person identified in clause (i) or (ii) of the definition of "Fleming
Holders" set forth in the Stock Purchase Agreements and no Person holds thirty
percent (30%) or more, in the aggregate, of the Registrable Securities, there
shall be no Designated Entity.

                  "DuPont Agreement" means the Registration Agreement, dated as
of January 29, 1997, among the Company, E.I. DuPont de Nemours and Company and
DuPont Chemical and Energy Operations, Inc.

                  "Exchange Act" means the Securities Exchange Act of 1934, as 
amended.

                  "Fleming Funds" shall have the meaning set forth in the first 
paragraph hereof.

                  "Fleming Holders" shall have the meaning set forth in Section
3 of the Stock Purchase Agreements.

                  "Investor" or "Investors" shall have the meaning set forth in
the first paragraph hereof.

                  "Long-Form Demand Registrations" shall have the meaning set
forth in Section 1.1 hereof.

                  "Other Securities" shall have the meaning set forth in Section
1.6 hereof.

                  "Person" means any individual, corporation, partnership,
association, trust or other entity or organization, including a government or
political subdivision or an agency or instrumentality thereof.

                  "Piggyback Registration" shall have the meaning set forth in 
Section 2.1 hereof.

                  "Registrable Securities" means (i) any shares of Common Stock
issued or issuable upon conversion of the Series A Preferred Stock purchased by
the Investors pursuant to the Stock Purchase Agreements and (ii) any securities
issued or issuable with respect to the

                                      -16-

<PAGE>



Common Stock referred to in clause (i) by way of stock dividend or stock split
or in connection with a combination of shares, recapitalization, merger,
consolidation or other reorganization or otherwise. As to any particular
Registrable Securities, such securities will cease to be Registrable Securities
when they have (x) been effectively registered under the Securities Act and
disposed of in accordance with the registration statement covering them or (y)
been transferred pursuant to Rule 144 (or any similar rule then in force) under
the Securities Act.

                  "Registration Expenses" shall have the meaning set forth in 
Section 4.1 hereof.

                  "SEC" shall have the meaning set forth in Section 1.3 hereof.

                  "Securities Act" means the Securities Act of 1933, as amended.

                  "Series A Preferred Stock" means the Company's Series A
Convertible Preferred Stock, par value $.01 per share, which Series A Preferred
Stock is convertible into shares of Common Stock.

                  "Shares" means the shares of Registrable Securities registered
on the registration statement filed with the SEC in connection with any Demand
Registration or any Piggyback Registration.

                  "Short-Form Demand Registrations" shall have the meaning set
forth in Section 1.1 hereof.

                  "Stock Purchase Agreements" means, collectively, the separate
Stock Purchase Agreements, dated as of March 30, 1999, between the Company and
each of the Fleming Funds.

                  "Transferees" shall have the meaning set forth in Section 3 of
the Stock Purchase Agreements.


                                   ARTICLE XI
                                  MISCELLANEOUS

                  11.1 No Inconsistent Agreements. The Company will not
hereafter enter into any agreement with respect to its securities which is
inconsistent with the rights granted to the holders of Registrable Securities in
this Agreement.

                  11.2 Adjustments Affecting Registrable Securities. The Company
will not effect or permit to occur any combination, subdivision or
reclassification of any of its securities which would adversely affect the
ability of the holders of Registrable Securities to include Registrable
Securities in a registration undertaken pursuant to this Agreement or which, to
the


                                      -17-

<PAGE>



extent within its control, would adversely affect the marketability of such
Registrable Securities in any such registration (including, without limitation,
effecting a stock split or a combination of shares).

                  11.3 Remedies. In the event of a breach by any party to this
Agreement of its obligations under this Agreement, any party injured by such
breach, in addition to being entitled to exercise all rights granted by law,
including recovery of damages, will be entitled to specific performance of its
rights under this Agreement. The parties agree that the provisions of this
Agreement shall be specifically enforceable, it being agreed by the parties that
the remedy at law, including monetary damages, for breach of any such provision
will be inadequate compensation for any loss and that any defense in any action
for specific performance that a remedy at law would be adequate is waived.

                  11.4 Amendments and Waivers. Except as otherwise provided
herein, no modification, amendment or waiver of any provision of this Agreement
will be effective against the Company or any holder of Registrable Securities,
unless such modification, amendment or waiver is approved in writing by the
Company and the Fleming Holders. The failure of any party to enforce any of the
provisions of this Agreement will in no way be construed as a waiver of such
provisions and will not affect the right of such party thereafter to enforce
each and every provision of this Agreement in accordance with its terms.

                  11.5 Successors and Assigns. All covenants and agreements in
this Agreement by or on behalf of any of the parties hereto will bind and inure
to the benefit of the respective successors and assigns of the parties hereto
whether so expressed or not. In addition, whether or not any express assignment
has been made, the provisions of this Agreement which are for the benefit of the
Investors or the holders of Registrable Securities are also for the benefit of,
and enforceable by, any subsequent holder of Registrable Securities.

                  11.6 Notices. All notices, requests and other communications
hereunder must be in writing and will be deemed to have been duly given only if
delivered personally or by facsimile transmission or sent by nationally
recognized overnight courier service to the parties at the following addresses
or facsimile numbers:

                  (i)      If to an Investor or a holder of Registrable 
                           Securities, to:

                           Fleming Capital Management
                           320 Park Avenue
                           New York, NY  10022
                           Facsimile No.:  (212) 508-3928
                           Attn:  Robert L. Burr and Robert M. Zech



                                      -18-

<PAGE>



                           with a copy to:

                           Morgan, Lewis & Bockius LLP
                           101 Park Avenue
                           New York, NY 10178
                           Facsimile No.:  (212) 309-6273
                           Attn: David W. Pollak, Esq.

                  (ii)     If to the Company, to:

                           Hudson Technologies, Inc.
                           275 North Middletown Road
                           Pearl River, NY  10965
                           Facsimile No.:  (914) 368-2540
                           Attn:  Stephen P. Mandracchia

                           with a copy to:

                           Tenzer Greenblatt LLP
                           405 Lexington Avenue
                           New York, NY  10174
                           Facsimile No.:  (212) 885-5001
                           Attn:  Kenneth Selterman, Esq.


All such notices, requests and other communications will (x) if delivered
personally to the address as provided in this Section 11.6, be deemed given and
received upon delivery, (y) if delivered by facsimile transmission to the
facsimile number as provided in this Section 11.6, be deemed given and received
upon receipt and (z) if delivered by nationally recognized overnight courier
service in the manner described above to the address as provided in this Section
11.6, be deemed given and received on the Business Day following the day it was
sent (in each case regardless of whether such notice, request or other
communication is received by any other Person to whom a copy of such notice is
to be delivered pursuant to this Section 11.6). Any party may from time to time
change its address, facsimile number or other information for the purpose of
notices to that party by giving notice specifying such change to the other
parties hereto.

                  11.7 Headings. The headings used in this Agreement have been
inserted for convenience of reference only and do not define or limit the
provisions hereof.

                  11.8 Gender. Whenever the pronouns "he" or "his" are used
herein they shall also be deemed to mean "she" or "hers" or "it" or "its"
whenever applicable. Words in the


                                      -19-

<PAGE>



singular shall be read and construed as though in the plural and words in the
plural shall be construed as though in the singular in all cases where they
would so apply.

                  11.9 Invalid Provisions. If any provision of this Agreement is
held to be illegal, invalid or unenforceable, and if the rights or obligations
of any party hereto under this Agreement will not be materially and adversely
affected thereby, (i) such provision will be fully severable, (ii) this
Agreement will be construed and enforced as if such illegal, invalid or
unenforceable provision had never comprised a part hereof, (iii) the remaining
provisions of this Agreement will remain in full force and effect and will not
be affected by the illegal, invalid or unenforceable provision or by its
severance herefrom and (iv) in lieu of such illegal, invalid or unenforceable
provision, there will be added automatically as a part of this Agreement a
legal, valid and enforceable provision as similar in terms to such illegal,
invalid or unenforceable provision as may be possible.

                  11.10 Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of New York applicable to a
contract executed and performed in such State without giving effect to the
conflicts of laws principles thereof.

                  11.11 Counterparts. This Agreement may be executed in any
number of counterparts, each of which will be deemed an original, but all of
which together will constitute one and the same instrument.



                  [remainder of page intentionally left blank]


                                      -20-

<PAGE>



                  IN WITNESS WHEREOF, the parties have duly executed this
Agreement as of the date first written above.

                                        HUDSON TECHNOLOGIES, INC.


                                        By: __________________________
                                               Name:
                                               Title:


                                        FLEMING US DISCOVERY FUND III, L.P.

                                        By:  FLEMING US DISCOVERY
                                                PARTNERS, L.P.,
                                             its general partner

                                             By:  FLEMING US DISCOVERY, LLC,
                                                  its general partner


                                                  By:_________________________ 
                                                        Robert L. Burr, member

                                        FLEMING US DISCOVERY OFFSHORE
                                           FUND III, L.P.

                                        By:  FLEMING US DISCOVERY
                                                PARTNERS, L.P.,
                                             its general partner

                                             By:  FLEMING US DISCOVERY, LLC,
                                                  its general partner


                                                  By:_________________________
                                                       Robert L. Burr, member


                                      -21-
<PAGE>

                             STOCKHOLDERS' AGREEMENT


                  This STOCKHOLDERS' AGREEMENT is dated as of March 30, 1999,
among Hudson Technologies, Inc., a New York corporation (the "Company"), Kevin
J. Zugibe ("KJZ"), Thomas P. Zugibe ("TPZ") and Stephen P. Mandracchia
("Mandracchia" and, collectively with KJZ and TPZ, "Management"), and Fleming US
Discovery Fund III, L.P. and Fleming US Discovery Offshore Fund III, L.P.
(collectively, the "Fleming Funds"). The Fleming Funds, any Fleming Holder and
any Transferee are collectively referred to herein as the "Investor Group" and,
individually, as an "Investor."

                               W I T N E S S E T H:

                  WHEREAS, pursuant to the terms of the Stock Purchase
Agreements, dated as of March 30, 1999, between the Company and each of the
Fleming Funds (the "Stock Purchase Agreements"), the Fleming Funds have
purchased 65,000 shares of the Company's Series A Convertible Preferred Stock,
par value $.01 per share (the "Series A Preferred Stock");

                  WHEREAS, KJZ beneficially owns approximately 7.0% of the
outstanding shares of the Company's Common Stock, par value $.01 per share (the
"Common Stock"), TPZ beneficially owns approximately 6.8% of the outstanding
shares of the Common Stock and Mandracchia beneficially owns approximately 6.8%
of the outstanding shares of the Common Stock (such shares, along with any
shares of Common Stock or other equity securities of the Company that KJZ, TPZ
or Mandracchia may subsequently acquire, the "Management Shares");

                  WHEREAS, it is a condition precedent to the Company's and the
Fleming Funds' respective obligations to consummate the transactions
contemplated by the Stock Purchase Agreements that the parties hereto shall have
entered into this Agreement; and

                  WHEREAS, each of the members of Management, the Company and
the Fleming Funds desires to enter into this Agreement to regulate certain
aspects of their relationship;

                  NOW, THEREFORE, in consideration of the arguments and mutual
covenants contained herein, the parties hereto hereby agree as follows:

1.       Rights of Inclusion (Tag-Along Rights).

                  (a) In the event any member of Management proposes to Transfer
any of its Management Shares (the "Transferor Shares") to any Person (the
"Buyer"), as a condition to

<PAGE>



such Transfer, such member of Management shall cause the Buyer to offer (the
"Inclusion Offer") to purchase from each Investor, at each such Investor's
option, up to that number of Investor Shares determined in accordance with
Section 1(b) on the same terms and conditions as are applicable to the
Transferor Shares (including any consideration to be received by such member of
Management in the form of bonuses, consulting fees, noncompetition payments or
pursuant to employment arrangements or similar arrangements), except that each
Investor shall not be required to provide any representation, warranty or other
undertaking other than with respect to its ownership of, and authority to
Transfer, the Investor Shares owned by it free of any liens or encumbrances.
Such member of Management shall provide prompt written notice to each Investor
(the "Inclusion Notice") setting forth all the terms and conditions of the
Inclusion Offer, and each Investor may accept the Inclusion Offer in whole or in
part by providing a written notice of acceptance with respect to Investor Shares
owned by it to such member of Management within twenty (20) days of delivery of
the Inclusion Notice to it (the "Acceptance Notice").

                  (b) Each Investor shall have the right to sell, pursuant to
the Inclusion Offer, Investor Shares representing the same percentage of all
Investor Shares owned by it as the Transferor Shares are of all Management
Shares owned by such member of Management (such percentage shall be calculated
on the basis that all shares of Series A Preferred Stock owned by each Investor
have been converted into shares of Common Stock at the current conversion price
per share under Section 5 of the Certificate of Amendment); provided, however,
that if no Investor elects to exercise such right, such member of Management
shall nonetheless be entitled to Transfer all of the Transferor Shares described
in the Inclusion Notice. In the event the number of Investor Shares for which
the Investor Group elects to exercise such right, along with the Transferor
Shares and any other shares of the Company to be sold by other stockholders
pursuant to any similar rights granted to such other stockholders, exceed the
number of shares which the Buyer is willing to purchase, the number of shares to
be Transferred to the Buyer by each transferor shall be reduced so that each
transferor is entitled to Transfer the same percentage of its shares included in
its Acceptance Notice as each other transferor. If an Investor elects to
exercise such right, such Investor may, in its sole discretion, determine the
composition of the Investor Shares (i.e., the number of the shares of Series A
Preferred Stock and Common Stock to be included in the Investor Shares) to be
Transferred by it to the Buyer pursuant to the Inclusion Offer. In the event
that any Investor chooses to include any shares of Series A Preferred Stock in
the Investor Shares to be Transferred by it to the Buyer pursuant to the
Inclusion Offer, any such Investor shall, prior to or simultaneously with such
Transfer, convert such shares of Series A Preferred Stock into shares of Common
Stock so that each Investor Transfers only Common Stock to the Buyer; provided
that any such conversion may be made conditional upon completion of such
Transfer to the Buyer.

                  (c) Such member of Management shall have ninety (90) days from
the date of the Inclusion Notice to Transfer, on behalf of himself and the
Investor Group, up to the number of shares covered by the Inclusion Offer
(including the Transferor Shares) to the Buyer. The terms of such Transfer,
including, without limitation, price and form of consideration, shall be as

                                        2

<PAGE>



set forth in the Inclusion Notice. If at the end of such ninety (90) day period
such member of Management has not completed the Transfer of the Transferor
Shares and the Investor Shares (if any) proposed to be Transferred, such member
of Management may not proceed with such Transfer or any other Transfer without
first giving a new Inclusion Notice pursuant to the provisions of this Section
1.

                  (d) If such member of Management is able to complete the
Transfer of the Transferor Shares and the Investor Shares (if any) proposed to
be Transferred within such ninety (90) day period, at the closing thereof, each
Investor shall deliver to the Buyer a certificate or certificates representing
the Investor Shares owned by it to be Transferred pursuant to the Inclusion
Offer, free and clear of all liens and encumbrances, and the Buyer shall pay to
each such Investor the purchase price for the Investor Shares so Transferred
pursuant to this Section 1 and shall furnish such other evidence of the
completion of such Transfer and the terms thereof as may be reasonably requested
by the Investor Group.

                  (e) The provisions of this Section 1 shall not apply to any
Transfer or proposed Transfer by any member of Management of Management Shares
representing ten percent (10%) or less of the Management Shares held by such
member on the date hereof, if such Transfer or proposed Transfer by such member,
together with all other such Transfers by such member during the five (5) years
preceding the date of such Transfer, represent twenty-five percent (25%) or less
of the Management Shares held by such member on the date hereof, with Management
Shares held by such member on the date hereof to be appropriately adjusted to
reflect any stock split, stock dividend, recapitalization or similar event;
provided, however, that each Transfer of Management Shares by such member that
takes place within one year of any other Transfer to the same Person or any
Affiliate of such Person shall be aggregated for purposes of such ten percent
(10%) threshold.

2.       Additional Directors.

                  (a) (i) So long as (A) the Fleming Holders hold at least
thirty-five percent (35%), in the aggregate, of the shares of Series A Preferred
Stock originally issued and Conversion Shares, or (B) if no such shares are held
by a Fleming Holder, any Transferee consented to by the Company, such consent
not to be unreasonably withheld (a "Permitted Transferee")), such Fleming
Holders or Permitted Transferee, as the case may be, shall be entitled, but not
required, to nominate up to two (2) individuals to be directors of the Company
(the "Additional Director" or "Additional Directors").

                      (ii) So long as (A) the Fleming Holders hold at least
twenty percent (20%), but less than thirty-five (35%) percent, in the aggregate,
of the shares of Series A Preferred Stock originally issued and Conversion
Shares, or (B) if no such shares are held by a Fleming Holder, any Permitted
Transferee, such Fleming Holders or Permitted Transferee, as the case may be,
shall be entitled, but not required, to nominate one (1) Additional Director.

                                        3

<PAGE>



                      (iii) Notwithstanding the foregoing provisions of this 
Section 2(a), the right of the Fleming Holders or Permitted Transferee, as the
case may be, to nominate Additional Directors shall be subject to the election
of Preferred Directors pursuant to Section 4(c) of the Certificate of Amendment,
such that for each Preferred Director elected pursuant thereto, the Fleming
Holders or Permitted Transferee, as the case may be, shall be entitled to
nominate one fewer Additional Director than would be the case had such Preferred
Director not been elected.

                  (b) Holders of at least a majority of the outstanding shares
of Series A Preferred Stock and Conversion Shares shall exercise their right, as
described in Section 2(a) above, to nominate each Additional Director by written
notice to the Company of the identity of the person so nominated, and requesting
the Company to call a meeting of its stockholders to act upon such nomination.
As promptly as practicable after receipt of written notice from such holders,
the Company will cause (including without limitation by vote of proxies granted
to management of the Company) each Additional Director to be elected to the
Company's Board of Directors. The nomination of each Additional Director shall
be made after consultation with the Company, and any such Additional Director
shall be an individual agreed to by the Company, such agreement not to be
unreasonably withheld. At the time of any such nomination, such Additional
Director will affirm his or her duty of confidentiality to the Company with
regard to any non-public confidential Company information through a
confidentiality agreement reasonably satisfactory to the Company and such
holders. Until the termination of this Agreement in accordance with its terms,
the Company's nominating committee shall recommend to the Company's Board of
Directors that all Additional Directors nominated for election to the Company's
Board of Directors pursuant to this Section 2 be included in the slate of
nominees recommended by such Board to the Company's shareholders for election as
directors at each annual meeting of the shareholders of the Company. In the
event that any Additional Director shall cease to serve as a director of the
Company for any reason, the vacancy created thereby shall be filled according to
the procedures described in Section 2(a) above and this Section 2(b).
Notwithstanding anything in this Section 2(b) to the contrary, in lieu of
holding a special or annual meeting of stockholders to elect Additional
Directors to the Company's Board of Directors, the Company, in its discretion,
may increase the size of its Board of Directors in accordance with the terms of
its bylaws and appoint Additional Directors to fill such newly created vacancies
on the Board of Directors.

                  (c) The Company will furnish to each Additional Director
elected to the Company's Board of Directors all information that is provided to
the other directors of the Company.

                  (d) For so long as the Company's Board of Directors is divided
into classes in respect of term of office, the Company shall allocate any
Additional Directors elected thereto pursuant to this Section 2 among such
classes so as best to maintain the respective rights and privileges held by each
such class prior to the election of such Additional Directors.


                                        4

<PAGE>



                  (e) It is the Company's policy to discuss with the Board of
Directors any proposed merger, consolidation, reorganization or acquisition or
disposition of material assets other than in the ordinary course of business and
other transactions out of the ordinary course of business which would have a
material impact on the Company's financial position or results of operations. If
in the future it should no longer be the Company's policy to present any such
matters to the Board of Directors, then the Company will, during the term of
this Agreement, discuss any such transactions with Fleming Capital Management or
such other Person as the Investor Group may designate in writing to the Company.

                  (f) Each of KJZ, TPZ and Mandracchia hereby irrevocably and
unconditionally agrees to take all actions necessary to call, or to cause the
Company and the appropriate officers and directors of the Company to call, a
special or annual meeting of stockholders of the Company for the purpose of, and
to vote all shares of Common Stock owned by him and other securities over which
he has voting control at any such annual or special meeting in favor of, or take
all actions by written consent in lieu of any such meeting necessary to cause,
the election as members of the Company's Board of Directors of each Additional
Director nominated in accordance with, and to otherwise effect the intent of,
this Section 2. In addition, each of KJZ, TPZ and Mandracchia agrees to vote the
shares of Common Stock owned by him and other securities over which he has
voting control upon any other matter arising under this Agreement submitted to a
vote of the stockholders in a manner that will implement the terms of this
Agreement.

3.       Board Observer Rights; Committees.

                  (a) (i) So long as (A) the Fleming Holders hold at least
thirty-five percent (35%), in the aggregate, of the shares of Series A Preferred
Stock originally issued and Conversion Shares, or (B) if no such shares are held
by a Fleming Holder, any Permitted Transferee, such Fleming Holders or Permitted
Transferee, as the case may be, shall have the right to appoint up to two (2)
representatives (the "Fleming Observer" or "Fleming Observers") (subject to the
provisions of Section 3(b) herein).

                      (ii) So long as (A) the Fleming Holders hold at least
twenty percent (20%), but less than thirty-five percent (35%), in the aggregate,
of the shares of Series A Preferred Stock originally issued and Conversion
Shares, or (B) if no such shares are held by a Fleming Holder, any Permitted
Transferee, such Fleming Holders or Permitted Transferee, as the case may be,
shall have the right to appoint one (1) Fleming Observer (subject to the
provisions of Section 3(b) herein).

                      (iii) The Fleming Observers shall have the right to attend
and participate in meetings of the Company's Board of Directors, or any
committee thereof, and the Company shall permit any Fleming Observer to attend
and participate in all such meetings as an observer, provided, that each Fleming
Observer shall have executed and delivered to the Company a confidentiality
agreement in a form reasonably acceptable to the Company and the Fleming

                                        5

<PAGE>



Holders. A Fleming Observer shall not have the right to vote on any matter
presented to the Board or any committee thereof. The Company shall give all
Fleming Observers written notice of each meeting of the Board of Directors or
any committee thereof and all written materials and other information given to
the Company's directors and committee members in the same manner and at the same
time such notices, materials and other information are given to the directors
and committee members. The Company shall reimburse any Fleming Observer for
travel and other expenses in connection with such meetings to the same extent
that the Company reimburses its directors and committee members. If the Board of
Directors or any committee thereof proposes to take any action by written
consent in lieu of a meeting, the Company shall give written notice thereof to
all Fleming Observers prior to the effective date of such consent describing the
nature and substance of such action.

                  (b) During such time that (i) the holders of the Series A
Preferred Stock have elected at least one director to the Company's Board of
Directors (or have waived their right to so elect such director) pursuant to
Section 4 of the Company's Certificate of Amendment with respect to the Series A
Preferred Stock or (ii) at least one Additional Director nominated by the
holders of the Series A Preferred Stock and Conversion Shares pursuant to
Section 2 hereof has been elected to the Company's Board of Directors (any such
Preferred Director or Additional Director being referred to as an "Investor
Director"), the number of Fleming Observers with respect to whom the Fleming
Holders or the Permitted Transferee, as the case may be, shall be entitled to
exercise their rights as provided in Section 3(a)(i) shall be modified such that
(A) in the event there is one (1) Investor Director, the Fleming Holders or the
Permitted Transferee, as the case may be, shall have the right to have one (1)
Fleming Observer and (B) in the event there are two (2) Investor Directors, the
Fleming Holders or the Permitted Transferee, as the case may be, shall not have
the right to have any Fleming Observer.

4.       Definitions.

                  As used herein, the following terms shall have the respective 
meanings set forth below:

                  "Acceptance Notice" shall have the meaning set forth in 
Section 1(a) hereof.

                  "Additional Director" shall have the meaning set forth in
Section 2(a) hereof.

                  "Affiliate" shall have the meaning set forth in Section 3 of
the Stock Purchase Agreements.

                  "Board" or "Board of Directors" shall have the meaning given
it in Section 3 of the Stock Purchase Agreements.

                  "Buyer" shall have the meaning set forth in Section 1(a)
hereof.


                                        6

<PAGE>



                  "Certificate of Amendment" shall have the meaning set forth in
Section 1(a) of the Stock Purchase Agreements.

                  "Common Stock" shall have the meaning set forth in the second
WHEREAS clause hereof.

                  "Company" shall have the meaning set forth in the first 
paragraph hereof.

                  "Conversion Shares" shall have the meaning set forth in
Section 3 of the Stock Purchase Agreements.

                  "Fleming Funds" shall have the meaning set forth in the first 
paragraph hereof.

                  "Fleming Holders" shall have the meaning set forth in Section
3 of the Stock Purchase Agreements.

                  "Fleming Observer" or "Fleming Observers" shall have the
meaning set forth in Section 3(a) hereof.

                  "Inclusion Notice" shall have the meaning set forth in Section
1(a) hereof.

                  "Inclusion Offer" shall have the meaning set forth in Section 
1(a) hereof.

                  "Investor" shall have the meaning set forth in the first 
paragraph hereof.

                  "Investor Director" shall have the meaning set forth in 
Section 3(b) hereof.

                  "Investor Group" shall have the meaning set forth in the first
paragraph hereof.

                  "Investor Shares" means all Series A Preferred Stock and
Common Stock owned by the Investor Group.

                  "Issue Date" shall have the meaning set forth in the 
Certificate of Amendment.

                  "KJZ" shall have the meaning set forth in the first paragraph 
hereof.

                  "Management" shall have the meaning set forth in the first 
paragraph hereof.

                  "Management Shares" shall have the meaning set forth in the
second WHEREAS clause hereof.

                  "Mandracchia" shall have the meaning set forth in the first 
paragraph hereof.

                                        7

<PAGE>



                  "Offer Acceptance Notice" shall have the meaning set forth in
Section 5(a) hereof.

                  "Offer Notice" shall have the meaning set forth in Section 
5(a) hereof.

                  "Permitted Transferee" shall have the meaning set forth in 
Section 2(a) hereof.

                  "Person" means an individual, corporation, partnership, firm,
association, joint venture, trust, unincorporated organization, governmental
body, agency, political subdivision or other entity.

                  "Proposed Sale" shall have the meaning set forth in Section 
5(a) hereof.

                  "Series A Preferred Stock" shall have the meaning set forth in
the first WHEREAS clause hereof.

                  "Stock Purchase Agreements" shall have the meaning set forth
in the first WHEREAS clause hereof.

                  "TPZ" shall have the meaning set forth in the first paragraph 
hereof.

                  "Transfer" means, with respect to any security, any direct or
indirect sale, transfer, assignment, hypothecation, pledge or any other
disposition of such security or any interest therein.

                  "Transferee" shall have the meaning set forth in Section 3 of
the Stock Purchase Agreements.

                  "Transferor Shares" shall have the meaning set forth in 
Section 1(a) hereof.

5.       Right of First Offer.

         (a) Subject to Section 5(c) below, prior to the conversion of any
shares of Series A Preferred Stock pursuant to Section 5 of the Certificate of
Amendment, if any holder thereof receives a bona fide offer for such shares from
any Person listed on Schedule 1 attached hereto (a "Proposed Sale"), as a
condition to a sale pursuant to such offer, such holder shall provide written
notice to the Company (the "Offer Notice") setting forth the identity of the
proposed purchaser and all the terms and conditions of the proposed sale. The
Company shall have the right, but not the obligation, to purchase all of such
shares, on the terms and conditions set forth in the Offer Notice, by delivering
a written notice of acceptance to such holder within ten (10) days of delivery
of the Offer Notice to the Company (the "Offer Acceptance Notice"). If the
Company fails to deliver an Offer Acceptance Notice to such holder within such
ten (10) day period, then such holder shall be entitled to sell its shares in
accordance with the Proposed Sale.


                                        8

<PAGE>



         (b) Subject to Section 5(a) above, a holder of shares of Series A
Preferred Stock shall have one hundred twenty (120) days from the date of the
Offer Notice to effectuate a Proposed Sale. The terms of such Proposed Sale,
including, without limitation, price and form of consideration, shall be as set
forth in the Offer Notice. If at the end of such one hundred twenty (120) day
period such holder has not completed the Proposed Sale, such holder may not
proceed with such Proposed Sale or any other Proposed Sale without first giving
a new Offer Notice pursuant to the provisions of Section 5(a).

         (c) Notwithstanding any provision in this Section 5 to the contrary,
until one year after the Issue Date, no holder of shares of Series A Preferred
Stock or Conversion Shares shall sell any such shares to any Person listed on
Schedule 1 attached hereto, except in the case of the Company being sold in its
entirety to any such Person.

         (d) Each of the Fleming Funds hereby agrees that it will not sell,
assign, transfer or otherwise dispose of any shares of Series A Preferred Stock
or Conversion Shares, other than pursuant to a registered public offering or
pursuant to a Rule 144 Transaction (as defined in the Stock Purchase
Agreements), unless the Transferee of such securities shall have agreed to be
bound by the provisions of this Section 5 as though an original party hereto.

6.       Miscellaneous.

                  (a) In the event of a breach by any party to this Agreement of
its obligations under this Agreement, any party injured by such breach, in
addition to being entitled to exercise all rights granted by law, including
recovery of damages, will be entitled to specific performance of its rights
under this Agreement. The parties agree that the provisions of this Agreement
shall be specifically enforceable, it being agreed by the parties that the
remedy at law, including monetary damages, for breach of any such provision will
be inadequate compensation for any loss and that any defense in any action for
specific performance that a remedy at law would be adequate is waived.

                  (b) Except as otherwise provided herein, no modification,
amendment or waiver of any provision of this Agreement will be effective against
any party hereto unless such modification, amendment or waiver is approved in
writing by all parties hereto. The failure of any party to enforce any of the
provisions of this Agreement will in no way be construed as a waiver of such
provisions and will not affect the right of such party thereafter to enforce
each and every provision of this Agreement in accordance with its terms.

                  (c) All covenants and agreements in this Agreement by or on
behalf of any of the parties hereto will bind and inure to the benefit of the
respective successors and assigns of the parties hereto whether so expressed or
not.

                  (d) All notices, requests and other communications hereunder
must be in writing and will be deemed to have been duly given only if delivered
personally or by facsimile transmission

                                        9

<PAGE>



or sent by nationally recognized overnight courier service to the parties at the
following addresses or facsimile numbers:

                  (i)      If to an Investor, to:

                           the address indicated on Schedule 1 to the Stock 
                           Purchase Agreements;

                           with a copy to:

                           Morgan, Lewis & Bockius LLP
                           101 Park Avenue
                           New York, NY 10178
                           Facsimile No.:  (212) 309-6273
                           Attn: David W. Pollak, Esq.

                  (ii)     If to the Company, to:

                           Hudson Technologies, Inc.
                           275 North Middletown Road
                           Pearl River, NY  10965
                           Facsimile No.:  (914) 368-2540
                           Attn:  Stephen P. Mandracchia

                           with a copy to:

                           Tenzer Greenblatt LLP
                           405 Lexington Avenue
                           New York, NY  10174
                           Facsimile No.:  (212) 885-5001
                           Attn:  Kenneth Selterman, Esq.

                  (iii)    If to KJZ, to:

                           Kevin J. Zugibe
                           Hudson Technologies, Inc.
                           275 North Middletown Road
                           Pearl River, NY  10965
                           Facsimile No.:  (914) 368-2540

                  (iv)     If to TPZ, to:

                           Thomas P. Zugibe
                           Hudson Technologies, Inc.

                                       10

<PAGE>



                           275 North Middletown Road
                           Pearl River, NY  10965
                           Facsimile No.:  (914) 368-2540

                  (v)      If to Mandracchia, to:

                           Stephen P. Mandracchia
                           Hudson Technologies, Inc.
                           275 North Middletown Road
                           Pearl River, NY  10965
                           Facsimile No.:  (914) 368-2540

                  All such notices, requests and other communications will (x)
if delivered personally to the address as provided in this Section 6(d), be
deemed given and received upon delivery, (y) if delivered by facsimile
transmission to the facsimile number as provided in this Section 6(d), be deemed
given and received upon receipt and (z) if delivered by nationally recognized
overnight courier service in the manner described above to the address as
provided in this Section 6(d), be deemed given and received on the business day
following the day it was sent (in each case regardless of whether such notice,
request or other communication is received by any other Person to whom a copy of
such notice is to be delivered pursuant to this Section 6(d)). Any party from
time to time may change its address, facsimile number or other information for
the purpose of notices to that party by giving notice specifying such change to
the other parties hereto.

                  (e) The headings used in this Agreement have been inserted for
convenience of reference only and do not define or limit the provisions hereof.

                  (f) If any provision of this Agreement is held to be illegal,
invalid or unenforceable, and if the rights or obligations of any party hereto
under this Agreement will not be materially and adversely affected thereby, (i)
such provision will be fully severable, (ii) this Agreement will be construed
and enforced as if such illegal, invalid or unenforceable provision had never
comprised a part hereof, (iii) the remaining provisions of this Agreement will
remain in full force and effect and will not be affected by the illegal, invalid
or unenforceable provision or by its severance herefrom and (iv) in lieu of such
illegal, invalid or unenforceable provision, there will be added automatically
as a part of this Agreement a legal, valid and enforceable provision as similar
in terms to such illegal, invalid or unenforceable provision as may be possible.

                  (g) This Agreement shall be governed by and construed in
accordance with the laws of the State of New York applicable to a contract
executed and performed in such State without giving effect to the conflicts of
laws principles thereof.

                  (h) This Agreement may be executed in any number of
counterparts, each of which will be deemed an original, but all of which
together will constitute one and the same instrument.

                                       11

<PAGE>



                  (i) For purposes of Sections 2(a)(i), 2(a)(ii), 3(a)(i) and
3(a)(ii), the calculation of a Person's percentage holdings of Conversion Shares
shall be determined based upon the number of shares of Series A Preferred Stock
from which such Conversion Shares derived.



                  [remainder of page intentionally left blank]


                                       12

<PAGE>



                  IN WITNESS WHEREOF, the parties have duly executed this
Stockholders' Agreement as of the date first written above.


                            HUDSON TECHNOLOGIES, INC.


                            By: _________________________
                                   Name:  Kevin J. Zugibe
                                   Title: Chairman and Chief Executive Officer


                            -----------------------------
                                Kevin J. Zugibe


                            -----------------------------
                                Thomas P. Zugibe


                            -----------------------------
                                Stephen P. Mandracchia






<PAGE>



                               FLEMING US DISCOVERY FUND III, L.P.

                               By:      FLEMING US DISCOVERY
                                           PARTNERS, L.P.,
                                        its general partner

                                        By:      FLEMING US DISCOVERY, LLC,
                                                 its general partner


                                                 By:___________________________
                                                        Robert L. Burr, member



                               FLEMING US DISCOVERY OFFSHORE
                                  FUND III, L.P.

                               By:      FLEMING US DISCOVERY
                                           PARTNERS, L.P.,
                                        its general partner

                                        By:      FLEMING US DISCOVERY, LLC,
                                                 its general partner


                                                 By:___________________________
                                                        Robert L. Burr, member






<PAGE>









Exhibit 23.1:
- - - ------------
            
               Consent of Independent Certified Public Accountants
               ---------------------------------------------------

Hudson Technologies, Inc.
Pearl River, New York

    We hereby consent to the incorporation by reference in the Registration
Statement (No. 333-17133) on Form S-8 of our report dated February 24, 1999,
except for Note 12, which is as of March 30, 1999, relating to the consolidated
financial statements of Hudson Technologies, Inc. for the year ended December
31, 1998 appearing in the Company's Annual Report on Form 10-KSB for the year
ended December 31, 1998.

We also consent to the reference to us under the caption "Experts" in the
Prospectus.


                                BDO SEIDMAN, LLP

Valhalla, New York
March 30, 1999



<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-KSB
AT DECEMBER 31, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                         776,000
<SECURITIES>                                         0
<RECEIVABLES>                                1,315,000
<ALLOWANCES>                                   240,000
<INVENTORY>                                  3,284,000
<CURRENT-ASSETS>                             5,343,000
<PP&E>                                       5,332,000
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                              10,859,000
<CURRENT-LIABILITIES>                        5,290,000
<BONDS>                                              0
                                0
                                          0
<COMMON>                                        51,000
<OTHER-SE>                                   3,591,000
<TOTAL-LIABILITY-AND-EQUITY>                10,859,000
<SALES>                                     23,311,000
<TOTAL-REVENUES>                            23,311,000
<CGS>                                       17,585,000
<TOTAL-COSTS>                               17,585,000
<OTHER-EXPENSES>                             1,195,000
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             399,000
<INCOME-PRETAX>                            (2,656,000)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (2,656,000)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (2,656,000)
<EPS-PRIMARY>                                    (.52)
<EPS-DILUTED>                                    (.52)
        

</TABLE>


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