REGISTRATION RIGHTS AGREEMENT

            THIS REGISTRATION RIGHTS AGREEMENT, dated as of November 4, 1999
(this "AGREEMENT"), by and between Commodore Applied Technologies, Inc., a
Delaware corporation, with principal executive offices located at 150 East 58th
Street, Suite 3400, New York, New York 10155 (the "COMPANY"), and The Shaar Fund
Ltd. (the "INITIAL INVESTOR").

            WHEREAS, upon the terms and subject to the conditions of the
Securities Purchase Agreement dated as of November 4, 1999, by and between the
Initial Investor and the Company (the "SECURITIES PURCHASE AGREEMENT"), the
Company has agreed to issue and sell to the Initial Investor (i) 335,000 shares
of Series E Convertible Preferred Stock, par value $0.001 per share (the
"PREFERRED SHARES"), which, upon the terms of and subject to the conditions of
the Company's Certificate of Designation of Series E Convertible Preferred Stock
(the "CERTIFICATE OF DESIGNATION"), are convertible into shares of the Company's
common stock, par value $0.001 per share (the "COMMON STOCK") and (ii) Common
Stock Purchase Warrants (the "WARRANTS") to purchase 312,500 shares of Common
Stock; and

            WHEREAS, to induce the Initial Investor to execute and deliver the
Securities Purchase Agreement, the Company has agreed to provide with respect to
the Common Stock issued or issuable in lieu of cash dividend payments on the
Preferred Shares, upon conversion of the Preferred Shares and exercise of the
Warrants certain registration rights under the Securities Act;

            NOW, THEREFORE, in consideration of the premises and the mutual
covenants contained herein, the parties hereto, intending to be legally bound,
hereby agree as follows:

            1. DEFINITIONS

            (a) As used in this Agreement, the following terms shall have the
meanings:

                  (i) "AFFILIATE," of any specified Person means any other
      Person who directly, or indirectly through one or more intermediaries, is
      in control of, is controlled by, or is under common control with, such
      specified Person. For purposes of this definition, control of a Person
      means the power, directly or indirectly, to direct or cause the direction
      of the management and policies of such Person whether by contract,
      securities, ownership or otherwise; and the terms "CONTROLLING" and
      "CONTROLLED" have the respective meanings correlative to the foregoing.

                  (ii) "CLOSING DATE" means the date and time of the issuance
      and sale of the Preferred Shares and the Warrants pursuant to the
      Securities Purchase Agreement.

                  (iii) "COMMISSION" means the Securities and Exchange
      Commission.

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                  (iv) "CURRENT MARKET PRICE" means on any date of determination
      the closing price of a Common Share on such day as reported on the Amex;
      provided, if such security is listed and admitted to trading on the
      NASDAQ, the closing bid price of a Common Share on such day as reported on
      the NASDAQ, or, if not quoted or listed or admitted to trading on any
      national securities exchange or quotation system, the closing bid price of
      such security on the over-the-counter market on the day in question as
      reported by Bloomberg LP, or a similar generally accepted reporting
      service, as the case may be.

                  (v) "EXCHANGE ACT" means the Securities Exchange Act of 1934,
      as amended, and the rules and regulations of the Commission thereunder, or
      any similar successor statute.

                  (vi) "INVESTOR" means each of the Initial Investor and any
      transferee or assignee of Registrable Securities which agrees to become
      bound by all of the terms and provisions of this Agreement in accordance
      with Section 8 hereof.

                  (vii) "NASDAQ" means the Nasdaq National Market or the Nasdaq
      SmallCap Market, as the case may be.

                  (viii) "PERSON" means any individual, partnership,
      corporation, limited liability company, joint stock company, association,
      trust, unincorporated organization, or a government or agency or political
      subdivision thereof.

                  (ix) "PROSPECTUS" means the prospectus (including, without
      limitation, any preliminary prospectus and any final prospectus filed
      pursuant to Rule 424(b) under the Securities Act, including any prospectus
      that discloses information previously omitted from a prospectus filed as
      part of an effective registration statement in reliance on Rule 430A under
      the Securities Act) included in the Registration Statement, as amended or
      supplemented by any prospectus supplement with respect to the terms of the
      offering of any portion of the Registrable Securities covered by the
      Registration Statement and by all other amendments and supplements to such
      prospectus, including all material incorporated by reference in such
      prospectus and all documents filed after the date of such prospectus by
      the Company under the Exchange Act and incorporated by reference therein.

                  (x) "PUBLIC OFFERING" means an offer registered with the
      Commission and the appropriate state securities commissions by the Company
      of its Common Stock and made pursuant to the Securities Act.

                  (xi) "REGISTRABLE SECURITIES" means the Common Stock issued or
      issuable (i) in lieu of cash dividend payments on the Preferred Shares,
      (ii) upon conversion or redemption of the Preferred Shares or (iii) upon
      exercise of the Warrants; provided, however, a share of Common Stock shall
      cease to be a Registrable Security for purposes of this Agreement when it
      no longer is a Restricted Security.

                  (xii) "REGISTRATION STATEMENT" means a registration statement
      of the Company filed on an appropriate form under the Securities Act
      providing for the

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      registration of, and the sale on a continuous or delayed basis by the
      holders of, all of the Registrable Securities pursuant to Rule 415 under
      the Securities Act, including the Prospectus contained therein and forming
      a part thereof, any amendments to such registration statement and
      supplements to such Prospectus, and all exhibits to and other material
      incorporated by reference in such registration statement and Prospectus.

                  (xiii) "RESTRICTED SECURITY" means any share of Common Stock
      issued or issuable in lieu of cash dividend payments on the Preferred
      Shares, upon conversion or redemption of the Preferred Shares or exercise
      of the Warrants except any such share that (i) has been registered
      pursuant to an effective registration statement under the Securities Act
      and sold in a manner contemplated by the prospectus included in such
      registration statement, (ii) has been transferred in compliance with the
      resale provisions of Rule 144 under the Securities Act (or any successor
      provision thereto) or is transferable pursuant to paragraph (k) of Rule
      144 under the Securities Act (or any successor provision thereto), or
      (iii) otherwise has been transferred and a new share of Common Stock not
      subject to transfer restrictions under the Securities Act has been
      delivered by or on behalf of the Company.

                  (xiv) "SECURITIES ACT" means the Securities Act of 1933, as
      amended, and the rules and regulations of the Commission thereunder, or
      any similar successor statute.

            (b) All capitalized terms used and not defined herein have the
respective meaning assigned to them in the Securities Purchase Agreement.

            2. REGISTRATION

            (a) FILING AND EFFECTIVENESS OF REGISTRATION STATEMENT. The Company
shall prepare and file with the Commission not later than 60 days after the
Closing Date, a Registration Statement relating to the offer and sale of the
Registrable Securities in the amount of 7,500,000 shares of Common Stock and
shall use its best efforts to cause the Commission to declare such Registration
Statement effective under the Securities Act as promptly as practicable but in
no event later than April 30, 2000. The Company shall promptly (and, in any
event, no more than 24 hours after it receives comments from the Commission),
notify the Buyer when and if it receives any comments from the Commission on the
Registration Statement and promptly forward a copy of such comments, if they are
in writing, to the Buyer. At such time after the filing of the Registration
Statement pursuant to this Section 2(a) as the Commission indicates, either
orally or in writing, that it has no further comments with respect to such
Registration Statement or that it is willing to entertain appropriate requests
for acceleration of effectiveness of such Registration Statement, the Company
shall promptly, and in no event later than two business days after receipt of
such indication from the Commission, request that the effectiveness of such
Registration Statement be accelerated within 48 hours of the Commission's
receipt of such request. Except as set forth on Schedule A annexed hereto, the
Company shall not include any other securities in the Registration Statement
relating to the offer and sale of the Registrable Securities. The Company shall
notify the Initial Investor by written notice that such Registration Statement
has been declared effective by the Commission within 24 hours of such
declaration by the Commission.

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            (b) REGISTRATION DEFAULT. If the Registration Statement covering the
Registrable Securities required to be filed by the Company pursuant to Section
2(a), is not (i) filed with the Commission within 75 days after the Closing Date
or (ii) declared effective by the Commission on or before April 30, 2000 (either
of which, without duplication, an "INITIAL DATE"), then the Company shall make
the payments to the Initial Investor as provided in the next sentence as
liquidated damages and not as a penalty. The amount to be paid by the Company to
the Initial Investor shall be determined as of each Computation Date (as defined
below), and such amount shall be equal to, in the case of clause (ii) above, 1%
of the Purchase Price (as defined in the Securities Purchase Agreement) from the
Initial Date to the first Computation Date and, in the case of clause (i) above,
from the Initial Date to the first Computation Date and for each Computation
Date thereafter and in the case of clause (ii) above from the first Computation
Date to the next Computation Date and for each Computation Date thereafter, 2%
of the Purchase Price, calculated, in each case, on a pro rata basis to the date
on which the Registration Statement is filed with (in the event of an Initial
Date pursuant to clause (i) above) or declared effective by (in the event of an
Initial Date pursuant to clause (ii) above) the Commission (the "PERIODIC
AMOUNT") provided, however, that in no event shall the liquidated damages be
less than $25,000; provided, further, however, that if the Registration
Statement is not declared effective by the Commission within 210 days after the
Initial Date set forth in clause (ii) above, then the Liquidated Damage Rate
shall increase to 4%; provided, further, however, that the Liquidated Damage
Rate shall increase by 1% for each 30 day period after the 210th day after the
Initial Date set forth in clause (ii) above that the Registration Statement is
not declared effective by the Commission. The full Periodic Amount shall be paid
by the Company to the Initial Investor by wire transfer of immediately available
funds within three days after each Computation Date.

            As used in this Section 2(b), "COMPUTATION DATE" means the date
which is 30 days after the Initial Date and, if the Registration Statement
required to be filed by the Company pursuant to Section 2(a) has not theretofore
been declared effective by the Commission, each date which is 30 days after the
previous Computation Date until such Registration Statement is so declared
effective.

            (c) ELIGIBILITY FOR USE OF FORM S-3. The Company agrees that at such
time as it meets all the requirements for the use of Securities Act Registration
Statement on Form S-3 it shall file all reports and information required to be
filed by it with the Commission in a timely manner and take all such other
action so as to maintain such eligibility for the use of such form.

            (d) ADDITIONAL REGISTRATION STATEMENT. In the event the Current
Market Price declines to $.50 per share or less and each time thereafter that
the Current Market Price declines by 20% (each such date, a "DECLINE DATE"), the
Company shall, to the extent required by the Securities Act (because the
additional shares were not covered by the Registration Statement filed pursuant
to Section 2(a)), as reasonably determined by the Initial Investor, file an
additional Registration Statement (an "ADDITIONAL REGISTRATION STATEMENT") or
pre-effective amendment to the original Registration Statement with the
Commission for such additional number of Registrable Securities as would be
issuable upon conversion of the Preferred Shares and exercise of the Warrants
(the "ADDITIONAL REGISTRABLE SECURITIES") in addition to those previously
registered, assuming (x) with respect to the first Additional Registration
Statement, a Conversion Price of $.50 per share and (y) with respect to each
succeeding Additional

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Registration Statement, a Conversion Price of 20% less than the Conversion Price
assumed with respect to the immediately preceding Additional Registration
Statement The Company shall, to the extent required by the Securities Act, as
reasonably determined by the Initial Investor, prepare and file with the
Commission not later than the 30th day thereafter, a Registration Statement
relating to the offer and sale of such Additional Registrable Securities and
shall use its best efforts to cause the Commission to declare such Registration
Statement effective under the Securities Act as promptly as practicable but not
later than 60 days thereafter. The Company shall not include any other
securities in the Registration Statement relating to the offer and sale of such
Additional Registrable Securities.

            If the Additional Registration Statement is not (i) filed with the
Commission within 30 days after the Decline Date or (ii) declared effective by
the Commission within 90 days after the Decline Date (either of which, without
duplication, an "ADDITIONAL REGISTRATION DATE"), then the Company shall make the
payments to the Initial Investor at the Liquidated Damage Rate from the
Additional Registration Date to the first Additional Computation Date and for
each Additional Computation Date thereafter, calculated on a pro rata basis to
the date on which the Additional Registration Statement is filed with (in the
event of an Additional Registration Date pursuant to clause (i) above) or
declared effective by (in the event of an Additional Registration Date pursuant
to clause (ii) above) the Commission (the "ADDITIONAL PERIODIC AMOUNT")
provided, however, that in no event shall the liquidated damages be less than
$25,000; provided, further, however, that if the Additional Registration
Statement is not declared effective by the Commission within 120 days after the
Additional Registration Date set forth in clause (ii) above, then the Liquidated
Damage Rate shall increase to 4%; provided, further, however, that the
Liquidated Damage Rate shall increase by 1% for each 30 day period after the
120th day after the Additional Registration Date set forth in clause (ii) above
that the Additional Registration Statement is not declared effective by the
Commission. The full Additional Periodic Amount shall be paid by the Company to
the Initial Investor by wire transfer of immediately available funds within
three days after each Additional Computation Date.

            As used in this Section 2(d), "ADDITIONAL COMPUTATION DATE" means
the date which is 30 days after the Additional Registration Date and, if the
Additional Registration Statement required to be filed by the Company pursuant
to this Section 2(d) has not theretofore been declared effective by the
Commission, each date which is 30 days after the previous Additional Computation
Date until such Additional Registration Statement is so declared effective.

            Notwithstanding anything to the contrary, express or implied,
contained in this Section 2(d), the obligations of the Company to file any
Additional Registration Statement(s) pursuant to the provisions hereof shall be
subject at all times to the limitations set forth in Section 6.9 of the
Certificate of Designation applicable to the Preferred Shares.

            (e) (i) If the Company proposes to register any of its warrants,
      Common Stock or any other shares of common stock of the Company under the
      Securities Act (other than a registration (A) on Form S-8 or S-4 or any
      successor or similar forms, (B) relating to Common Stock or any other
      shares of common stock of the Company issuable upon exercise of employee
      share options or in connection with any employee benefit or similar plan
      of the Company or (C) in connection with a direct or indirect acquisition
      by

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      the Company of another Person or any transaction with respect to which
      Rule 145 (or any successor provision) under the Securities Act applies),
      whether or not for sale for its own account, it will each such time, give
      prompt written notice at least 20 days prior to the anticipated filing
      date of the registration statement relating to such registration to each
      Investor, which notice shall set forth such Investor's rights under this
      Section 3(e) and shall offer such Investor the opportunity to include in
      such registration statement such number of Registrable Securities as such
      Investor may request. Upon the written request of any Investor made within
      10 days after the receipt of notice from the Company (which request shall
      specify the number of Registrable Securities intended to be disposed of by
      such Investor), the Company will use its best efforts to effect the
      registration under the Securities Act of all Registrable Securities that
      the Company has been so requested to register by each Investor, to the
      extent requisite to permit the disposition of the Registrable Securities
      so to be registered; provided, however, that (A) if such registration
      involves a Public Offering, each Investor must sell its Registrable
      Securities to any underwriters selected by the Company with the consent of
      such Investor on the same terms and conditions as apply to the Company and
      (B) if, at any time after giving written notice of its intention to
      register any Registrable Securities pursuant to this Section 3 and prior
      to the effective date of the registration statement filed in connection
      with such registration, the Company shall determine for any reason not to
      register such Registrable Securities, the Company shall give written
      notice to each Investor and, thereupon, shall be relieved of its
      obligation to register any Registrable Securities in connection with such
      registration. The Company's obligations under this Section 2(e) shall
      terminate on the date that the registration statement to be filed in
      accordance with Section 2(a) is declared effective by the Commission.

                  (ii) If a registration pursuant to this Section 2(e) involves
      a Public Offering and the managing underwriter thereof advises the Company
      that, in its view, the number of shares of Common Stock, Warrants or other
      shares of Common Stock that the Company and the Investors intend to
      include in such registration exceeds the largest number of shares of
      Common Stock or Warrants (including any other shares of Common Stock or
      Warrants of the Company) that can be sold without having an adverse effect
      on such Public Offering (the "MAXIMUM OFFERING SIZE"), the Company will
      include in such registration only such number of shares of Common Stock or
      Warrants, as applicable, as does not exceed the Maximum Offering Size, and
      the number of shares in the Maximum Offering Size shall be allocated among
      the Company, the Investors and any other sellers of Common Stock or
      Warrants in such Public Offering ("THIRD-PARTY SELLERS"), first, pro rata
      among the Investors until all the shares of Common Stock or Warrants
      originally proposed to be offered for sale by the Investors have been
      allocated, and second, pro rata among the Company and any Third-Party
      Sellers, in each case on the basis of the relative number of shares of
      Common Stock or Warrants originally proposed to be offered for sale under
      such registration by each of the Investors, the Company and the
      Third-Party Sellers, as the case may be. If as a result of the proration
      provisions of this Section 2(e)(ii), any Investor is not entitled to
      include all such Registrable Securities in such registration, such
      Investor may elect to withdraw its request to include any Registrable
      Securities in such registration. With respect to registrations pursuant to
      this Section 2(e), the number of securities required to satisfy any
      underwriters' over-allotment option shall be allocated among the Company,
      the Investors and any Third Party Seller pro rata on the

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      basis of the relative number of securities offered for sale under such
      registration by each of the Investors, the Company and any such Third
      Party Sellers before the exercise of such over-allotment option.

            3. OBLIGATIONS OF THE COMPANY

            In connection with the registration of the Registrable Securities,
the Company shall:

            (a) Promptly (i) prepare and file with the Commission such
amendments (including post-effective amendments) to the Registration Statement
and supplements to the Prospectus as may be necessary to keep the Registration
Statement continuously effective and in compliance with the provisions of the
Securities Act applicable thereto so as to permit the Prospectus forming part
thereof to be current and useable by Investors for resales of the Registrable
Securities for a period of five years from the date on which the Registration
Statement is first declared effective by the Commission (the "EFFECTIVE TIME")
or such shorter period that will terminate when all the Registrable Securities
covered by the Registration Statement have been sold pursuant thereto in
accordance with the plan of distribution provided in the Prospectus, transferred
pursuant to Rule 144 under the Securities Act or otherwise transferred in a
manner that results in the delivery of new securities not subject to transfer
restrictions under the Securities Act (the "REGISTRATION PERIOD") and (ii) take
all lawful action such that each of (A) the Registration Statement and any
amendment thereto does not, when it becomes effective, contain 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 and
(B) the Prospectus forming part of the Registration Statement, and any amendment
or supplement thereto, does not at any time during the Registration Period
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, in
light of the circumstances under which they were made, not misleading.

            (b) During the Registration Period, comply with the provisions of
the Securities Act with respect to the Registrable Securities of the Company
covered by the Registration Statement until such time as all of such Registrable
Securities have been disposed of in accordance with the intended methods of
disposition by the Investors as set forth in the Prospectus forming part of the
Registration Statement;

            (c) (i) Prior to the filing with the Commission of any Registration
Statement (including any amendments thereto) and the distribution or delivery of
any Prospectus (including any supplements thereto), provide (A) draft copies
thereof to the Investors and reflect in such documents all such comments as the
Investors (and their counsel) reasonably may propose and (B) to the Investors a
copy of the accountant's consent letter to be included in the filing and (ii)
furnish to each Investor whose Registrable Securities are included in the
Registration Statement and its legal counsel identified to the Company, (A)
promptly after the same is prepared and publicly distributed, filed with the
Commission, or received by the Company, one copy of the Registration Statement,
each Prospectus, and each amendment or supplement thereto, and (B) such number
of copies of the Prospectus and all amendments and supplements thereto and such

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other documents, as such Investor may reasonably request in order to facilitate
the disposition of the Registrable Securities owned by such Investor;

            (d) (i) Register or qualify the Registrable Securities covered by
the Registration Statement under such securities or "blue sky" laws of such
jurisdictions as the Investors who hold a majority-in-interest of the
Registrable Securities being offered reasonably request, (ii) prepare and file
in such jurisdictions such amendments (including post-effective amendments) and
supplements to such registrations and qualifications as may be necessary to
maintain the effectiveness thereof at all times during the Registration Period,
(iii) take all such other lawful actions as may be necessary to maintain such
registrations and qualifications in effect at all times during the Registration
Period, and (iv) take all such other lawful actions reasonably necessary or
advisable to qualify the Registrable Securities for sale in such jurisdictions;
provided, however, that the Company shall not be required in connection
therewith or as a condition thereto to (A) qualify to do business in any
jurisdiction where it would not otherwise be required to qualify but for this
Section 3(d), (B) subject itself to general taxation in any such jurisdiction or
(C) file a general consent to service of process in any such jurisdiction;

            (e) As promptly as practicable after becoming aware of such event,
notify each Investor of the occurrence of any event, as a result of which the
Prospectus included in the Registration Statement, as then in effect, includes
an untrue statement of a material fact or omits to state 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, and
promptly prepare an amendment to the Registration Statement and supplement to
the Prospectus to correct such untrue statement or omission, and deliver a
number of copies of such supplement and amendment to each Investor as such
Investor may reasonably request;

            (f) As promptly as practicable after becoming aware of such event,
notify each Investor who holds Registrable Securities being sold (or, in the
event of an underwritten offering, the managing underwriters) of the issuance by
the Commission of any stop order or other suspension of the effectiveness of the
Registration Statement at the earliest possible time and take all lawful action
to effect the withdrawal, recession or removal of such stop order or other
suspension;

            (g) Cause all the Registrable Securities covered by the Registration
Statement to be listed on the principal national securities exchange, and
included in an inter-dealer quotation system of a registered national securities
association, on or in which securities of the same class or series issued by the
Company are then listed or included;

            (h) Maintain a transfer agent and registrar, which may be a single
entity, for the Registrable Securities not later than the effective date of the
Registration Statement;

            (i) Cooperate with the Investors who hold Registrable Securities
being offered to facilitate the timely preparation and delivery of certificates
for the Registrable Securities to be offered pursuant to the registration
statement and enable such certificates for the Registrable Securities to be in
such denominations or amounts, as the case may be, as the Investors reasonably
may request and registered in such names as the Investor may request; and,
within three business days after a registration statement which includes
Registrable Securities is

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declared effective by the Commission, deliver and cause legal counsel selected
by the Company to deliver to the transfer agent for the Registrable Securities
(with copies to the Investors whose Registrable Securities are included in such
registration statement) an appropriate instruction and, to the extent necessary,
an opinion of such counsel;

            (j) Take all such other lawful actions reasonably necessary to
expedite and facilitate the disposition by the Investors of their Registrable
Securities in accordance with the intended methods therefor provided in the
Prospectus which are customary under the circumstances;

            (k) Make generally available to its security holders as soon as
practicable, but in any event not later than three (3) months after (i) the
effective date (as defined in Rule 158(c) under the Securities Act) of the
Registration Statement, and (ii) the effective date of each post-effective
amendment to the Registration Statement, as the case may be, an earnings
statement of the Company and its subsidiaries complying with Section 11(a) of
the Securities Act and the rules and regulations of the Commission thereunder
(including, at the option of the Company, Rule 158);

            (l) In the event of an underwritten offering, promptly include or
incorporate in a Prospectus supplement or post-effective amendment to the
Registration Statement such information as the managers reasonably agree should
be included therein and to which the Company does not reasonably object and make
all required filings of such Prospectus supplement or post-effective amendment
as soon as practicable after it is notified of the matters to be included or
incorporated in such Prospectus supplement or post-effective amendment;

            (m) (i) Make reasonably available for inspection by Investors, any
underwriter participating in any disposition pursuant to the Registration
Statement, and any attorney, accountant or other agent retained by such
Investors or any such underwriter all relevant financial and other records,
pertinent corporate documents and properties of the Company and its
subsidiaries, and (ii) cause the Company's officers, directors and employees to
supply all information reasonably requested by such Investors or any such
underwriter, attorney, accountant or agent in connection with the Registration
Statement, in each case, as is customary for similar due diligence examinations;
provided, however, that all records, information and documents that are
designated in writing by the Company, in good faith, as confidential,
proprietary or containing any material nonpublic information shall be kept
confidential by such Investors and any such underwriter, attorney, accountant or
agent (pursuant to an appropriate confidentiality agreement in the case of any
such holder or agent), unless such disclosure is made pursuant to judicial
process in a court proceeding (after first giving the Company an opportunity
promptly to seek a protective order or otherwise limit the scope of the
information sought to be disclosed) or is required by law, or such records,
information or documents become available to the public generally or through a
third party not in violation of an accompanying obligation of confidentiality;
and provided, further, that, if the foregoing inspection and information
gathering would otherwise disrupt the Company's conduct of its business, such
inspection and information gathering shall, to the maximum extent possible, be
coordinated on behalf of the Investors and the other parties entitled thereto by
one firm of counsel designed by and on behalf of the majority in interest of
Investors and other parties;

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            (n) In connection with any underwritten offering, make such
representations and warranties to the Investors participating in such
underwritten offering and to the managers, in form, substance and scope as are
customarily made by the Company to underwriters in secondary underwritten
offerings;

            (o) In connection with any underwritten offering, obtain opinions of
counsel to the Company (which counsel and opinions (in form, scope and
substance) shall be reasonably satisfactory to the managers) addressed to the
underwriters, covering such matters as are customarily covered in opinions
requested in secondary underwritten offerings (it being agreed that the matters
to be covered by such opinions shall include, without limitation, as of the date
of the opinion and as of the Effective Time of the Registration Statement or
most recent post-effective amendment thereto, as the case may be, the absence
from the Registration Statement and the Prospectus, including any documents
incorporated by reference therein, of an untrue statement of a material fact or
the omission of a material fact required to be stated therein or necessary to
make the statements therein (in the case of the Prospectus, in light of the
circumstances under which they were made) not misleading, subject to customary
limitations);

            (p) In connection with any underwritten offering, obtain "cold
comfort" letters and updates thereof from the independent public accountants of
the Company (and, if necessary, from the independent public accountants of any
subsidiary of the Company or of any business acquired by the Company, in each
case for which financial statements and financial data are, or are required to
be, included in the Registration Statement), addressed to each underwriter
participating in such underwritten offering (if such underwriter has provided
such letter, representations or documentation, if any, required for such cold
comfort letter to be so addressed), in customary form and covering matters of
the type customarily covered in "cold comfort" letters in connection with
secondary underwritten offerings;

            (q) In connection with any underwritten offering, deliver such
documents and certificates as may be reasonably required by the managers, if
any; and

            (r) In the event that any broker-dealer registered under the
Exchange Act shall be an "AFFILIATE" (as defined in Rule 2729(b)(1) of the rules
and regulations of the National Association of Securities Dealers, Inc. (the
"NASD RULES") (or any successor provision thereto)) of the Company or has a
"CONFLICT OF INTEREST" (as defined in Rule 2720(b)(7) of the NASD Rules (or any
successor provision thereto)) and such broker-dealer shall underwrite,
participate as a member of an underwriting syndicate or selling group or assist
in the distribution of any Registrable Securities covered by the Registration
Statement, whether as a holder of such Registrable Securities or as an
underwriter, a placement or sales agent or a broker or dealer in respect
thereof, or otherwise, the Company shall assist such broker-dealer in complying
with the requirements of the NASD Rules, including, without limitation, by (A)
engaging a "QUALIFIED INDEPENDENT UNDERWRITER" (as defined in Rule 2720(b)(15)
of the NASD Rules (or any successor provision thereto)) to participate in the
preparation of the Registration Statement relating to such Registrable
Securities, to exercise usual standards of due diligence in respect thereof and
to recommend the public offering price of such Registrable Securities, (B)
indemnifying such qualified independent underwriter to the extent of the
indemnification of underwriters provided in Section 5 hereof, and (C) providing
such information to such broker-

                                       10

<PAGE>

dealer as may be required in order for such broker-dealer to comply with the
requirements of the NASD Rules.

            4. OBLIGATIONS OF THE INVESTORS

            In connection with the registration of the Registrable Securities,
the Investors shall have the following obligations:

            (a) It shall be a condition precedent to the obligations of the
Company to complete the registration pursuant to this Agreement with respect to
the Registrable Securities of a particular Investor that such Investor shall
furnish to the Company such information regarding itself, the Registrable
Securities held by it and the intended method of disposition of the Registrable
Securities held by it as shall be reasonably required to effect the registration
of such Registrable Securities and shall execute such documents in connection
with such registration as the Company may reasonably request. As least seven
days prior to the first anticipated filing date of the Registration Statement,
the Company shall notify each Investor of the information the Company requires
from each such Investor (the "REQUESTED INFORMATION") if such Investor elects to
have any of its Registrable Securities included in the Registration Statement.
If at least two business days prior to the anticipated filing date the Company
has not received the Requested Information from an Investor (a "NON-RESPONSIVE
INVESTOR"), then the Company may file the Registration Statement without
including Registrable Securities of such Non-Responsive Investor and have no
further obligations to the Non-Responsive Investor;

            (b) Each Investor by its acceptance of the Registrable Securities
agrees to cooperate with the Company in connection with the preparation and
filing of the Registration Statement hereunder, unless such Investor has
notified the Company in writing of its election to exclude all of its
Registrable Securities from the Registration Statement; and

            (c) Each Investor agrees that, upon receipt of any notice from the
Company of the occurrence of any event of the kind described in Section 3(e) or
3(f), it shall immediately discontinue its disposition of Registrable Securities
pursuant to the Registration Statement covering such Registrable Securities
until such Investor's receipt of the copies of the supplemented or amended
Prospectus contemplated by Section 3(e) and, if so directed by the Company, such
Investor shall deliver to the Company (at the expense of the Company) or destroy
(and deliver to the Company a certificate of destruction) all copies in such
Investor's possession, of the Prospectus covering such Registrable Securities
current at the time of receipt of such notice.

            5. EXPENSES OF REGISTRATION

            All expenses, other than underwriting discounts and commissions,
incurred in connection with registrations, filings or qualifications pursuant to
Section 3, but including, without limitation, all registration, listing, and
qualifications fees, printing and engraving fees, accounting fees, and the fees
and disbursements of counsel for the Company, and the reasonable fees of one
firm of counsel to the holders of a majority in interest of the Registrable
Securities shall be borne by the Company.

                                       11

<PAGE>

            6. INDEMNIFICATION AND CONTRIBUTION

            (a) The Company shall indemnify and hold harmless each Investor and
each underwriter, if any, which facilitates the disposition of Registrable
Securities, and each of their respective officers and directors and each person
who controls such Investor or underwriter within the meaning of Section 15 of
the Securities Act or Section 20 of the Exchange Act (each such person being
sometimes hereinafter referred to as an "INDEMNIFIED PERSON") from and against
any losses, claims, damages or liabilities, joint or several, to which such
Indemnified Person may become subject under the Securities Act or otherwise,
insofar as such losses, claims, damages or liabilities (or actions in respect
thereof) arise out of or are based upon an untrue statement or alleged untrue
statement of a material fact contained in any Registration Statement or an
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein, not misleading, or
arise out of or are based upon an untrue statement or alleged untrue statement
of a material fact contained in any Prospectus or an omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein, in the light of the circumstances
under which they were made, not misleading; and the Company hereby agrees to
reimburse such Indemnified Person for all reasonable legal and other expenses
incurred by them in connection with investigating or defending any such action
or claim as and when such expenses are incurred; provided, however that the
Company shall not be liable to any such Indemnified Person in any such case to
the extent that any such loss, claim, damage or liability arises out of or is
based upon (i) an untrue statement or alleged untrue statement made in, or an
omission or alleged omission from, such Registration Statement or Prospectus in
reliance upon and in conformity with written information furnished to the
Company by such Indemnified Person expressly for use therein or (ii) in the case
of the occurrence of an event of the type specified in Section 3(e), the use by
the Indemnified Person of an outdated or defective Prospectus after the Company
has provided to such Indemnified Person an updated Prospectus correcting the
untrue statement or alleged untrue statement or omission or alleged omission
giving rise to such loss, claim, damage or liability.

            (b) INDEMNIFICATION BY THE INVESTORS AND UNDERWRITERS. Each Investor
agrees, as a consequence of the inclusion of any of its Registrable Securities
in a Registration Statement, and each underwriter, if any, which facilitates the
disposition of Registrable Securities shall agree, as a consequence of
facilitating such disposition of Registrable Securities, severally and not
jointly, to (i) indemnify and hold harmless the Company, its directors
(including any person who, with his or her consent, is named in the Registration
Statement as a director nominee of the Company), its officers who sign any
Registration Statement and each person, if any, who controls the Company within
the meaning of either Section 15 of the Securities Act or Section 20 of the
Exchange Act, against any losses, claims, damages or liabilities to which the
Company or such other persons may become subject, under the Securities Act or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect thereof) arise out of or are based upon an untrue statement or alleged
untrue statement of a material fact contained in such Registration Statement or
Prospectus or arise out of or are based upon the omission or alleged omission to
state therein 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, in the case of the Prospectus), not misleading, in each case to the
extent, but only to the extent, that such untrue statement or alleged untrue
statement or omission or alleged omission was made in reliance upon and in
conformity with written information furnished to the Company

                                       12

<PAGE>

by such holder or underwriter expressly for use therein; provided, however, that
no Investor or underwriter shall be liable under this Section 6(b) for any
amount in excess of the net proceeds paid to such Investor or underwriter in
respect of shares sold by it, and (ii) reimburse the Company for any legal or
other expenses incurred by the Company in connection with investigating or
defending any such action or claim as such expenses are incurred.

            (c) NOTICE OF CLAIMS, ETC. Promptly after receipt by a party seeking
indemnification pursuant to this Section 6 (an "INDEMNIFIED PARTY") of written
notice of any investigation, claim, proceeding or other action in respect of
which indemnification is being sought (each, a "CLAIM"), the Indemnified Party
promptly shall notify the party against whom indemnification pursuant to this
Section 6 is being sought (the "INDEMNIFYING PARTY") of the commencement
thereof; but the omission to so notify the Indemnifying Party shall not relieve
it from any liability that it otherwise may have to the Indemnified Party,
except to the extent that the Indemnifying Party is materially prejudiced and
forfeits substantive rights and defenses by reason of such failure. In
connection with any Claim as to which both the Indemnifying Party and the
Indemnified Party are parties, the Indemnifying Party shall be entitled to
assume the defense thereof. Notwithstanding the assumption of the defense of any
Claim by the Indemnifying Party, the Indemnified Party shall have the right to
employ separate legal counsel and to participate in the defense of such Claim,
and the Indemnifying Party shall bear the reasonable fees, out-of-pocket costs
and expenses of such separate legal counsel to the Indemnified Party if (and
only if): (x) the Indemnifying Party shall have agreed to pay such fees, costs
and expenses, (y) the Indemnified Party and the Indemnifying Party shall
reasonably have concluded that representation of the Indemnified Party by the
Indemnifying Party by the same legal counsel would not be appropriate due to
actual or, as reasonably determined by legal counsel to the Indemnified Party,
potentially differing interests between such parties in the conduct of the
defense of such Claim, or if there may be legal defenses available to the
Indemnified Party that are in addition to or disparate from those available to
the Indemnifying Party, or (z) the Indemnifying Party shall have failed to
employ legal counsel reasonably satisfactory to the Indemnified Party within a
reasonable period of time after notice of the commencement of such Claim. If the
Indemnified Party employs separate legal counsel in circumstances other than as
described in clauses (x), (y) or (z) above, the fees, costs and expenses of such
legal counsel shall be borne exclusively by the Indemnified Party. Except as
provided above, the Indemnifying Party shall not, in connection with any Claim
in the same jurisdiction, be liable for the fees and expenses of more than one
firm of counsel for the Indemnified Party (together with appropriate local
counsel). The Indemnified Party shall not, without the prior written consent of
the Indemnifying Party (which consent shall not unreasonably be withheld),
settle or compromise any Claim or consent to the entry of any judgment that does
not include an unconditional release of the Indemnifying Party from all
liabilities with respect to such Claim or judgment.

            (d) CONTRIBUTION. If the indemnification provided for in this
Section 6 is unavailable to or insufficient to hold harmless an Indemnified
Person under subsection (a) or (b) above in respect of any losses, claims,
damages or liabilities (or actions in respect thereof) referred to therein, then
each Indemnifying Party shall contribute to the amount paid or payable by such
Indemnified Party as a result of such losses, claims, damages or liabilities (or
actions in respect thereof) in such proportion as is appropriate to reflect the
relative fault of the Indemnifying Party and the Indemnified Party in connection
with the statements or omissions

                                       13

<PAGE>

which resulted in such losses, claims, damages or liabilities (or actions in
respect thereof), as well as any other relevant equitable considerations. The
relative fault of such Indemnifying Party and Indemnified Party shall be
determined by reference to, among other things, whether the untrue or alleged
untrue statement of a material fact or omission or alleged omission to state a
material fact relates to information supplied by such Indemnifying Party or by
such Indemnified Party, and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission.
The parties hereto agree that it would not be just and equitable if contribution
pursuant to this Section 6(d) were determined by pro rata allocation (even if
the Investors or any 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 this Section 6(d). The amount paid or
payable by an Indemnified Party as a result of the losses, claims, damages or
liabilities (or actions in respect thereof) referred to above shall be deemed to
include any legal or other fees or expenses reasonably incurred by such
Indemnified Party in connection with investigating or defending any such action
or claim. 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. The
obligations of the Investors and any underwriters in this Section 6(d) to
contribute shall be several in proportion to the percentage of Registrable
Securities registered or underwritten, as the case may be, by them and not
joint.

            (e) Notwithstanding any other provision of this Section 6, in no
event shall any (i) Investor be required to undertake liability to any person
under this Section 6 for any amounts in excess of the dollar amount of the
proceeds to be received by such Investor from the sale of such Investor's
Registrable Securities (after deducting any fees, discounts and commissions
applicable thereto) pursuant to any Registration Statement under which such
Registrable Securities are to be registered under the Securities Act and (ii)
underwriter be required to undertake liability to any Person hereunder for any
amounts in excess of the aggregate discount, commission or other compensation
payable to such underwriter with respect to the Registrable Securities
underwritten by it and distributed pursuant to the Registration Statement.

            (f) The obligations of the Company under this Section 6 shall be in
addition to any liability which the Company may otherwise have to any
Indemnified Person and the obligations of any Indemnified Person under this
Section 6 shall be in addition to any liability which such Indemnified Person
may otherwise have to the Company. The remedies provided in this Section 6 are
not exclusive and shall not limit any rights or remedies which may otherwise be
available to an indemnified party at law or in equity.

            7. RULE 144

            With a view to making available to the Investors the benefits of
Rule 144 under the Securities Act or any other similar rule or regulation of the
Commission that may at any time permit the Investors to sell securities of the
Company to the public without registration ("RULE 144"), the Company agrees to
use its best efforts to:

            (a) comply with the provisions of paragraph (c) (1) of Rule 144; and

                                       14

<PAGE>

            (b) file with the Commission in a timely manner all reports and
other documents required to be filed by the Company pursuant to Section 13 or
15(d) under the Exchange Act; and, if at any time it is not required to file
such reports but in the past had been required to or did file such reports, it
will, upon the request of any Investor, make available other information as
required by, and so long as necessary to permit sales of, its Registrable
Securities pursuant to Rule 144.

            8. ASSIGNMENT

            The rights to have the Company register Registrable Securities
pursuant to this Agreement shall be automatically assigned by the Investors to
any permitted transferee of all or any portion of such Registrable Securities
(or all or any portion of any Preferred Shares or Warrant of the Company which
is convertible into such securities) only if: (a) the Investor agrees in writing
with the transferee or assignee to assign such rights, and a copy of such
agreement is furnished to the Company within a reasonable time after such
assignment, (b) the Company is, within a reasonable time after such transfer or
assignment, furnished with written notice of (i) the name and address of such
transferee or assignee and (ii) the securities with respect to which such
registration rights are being transferred or assigned, (c) immediately following
such transfer or assignment, the securities so transferred or assigned to the
transferee or assignee constitute Restricted Securities, and (d) at or before
the time the Company received the written notice contemplated by clause (b) of
this sentence the transferee or assignee agrees in writing with the Company to
be bound by all of the provisions contained herein.

            9. AMENDMENT AND WAIVER

            Any provision of this Agreement may be amended and the observance
thereof may be waived (either generally or in a particular instance and either
retroactively or prospectively), only with the written consent of the Company
and Investors who hold a majority-in-interest of the Registrable Securities. Any
amendment or waiver effected in accordance with this Section 9 shall be binding
upon each Investor and the Company.

            10. CHANGES IN COMMON STOCK

            If, and as often as, there are any changes in the Common Stock by
way of stock split, stock dividend, reverse split, combination or
reclassification, or through merger, consolidation, reorganization or
recapitalization, or by any other means, appropriate adjustment shall be made in
the provisions hereof, as may be required, so that the rights and privileges
granted hereby shall continue with respect to the Common Stock as so changed.

            11. MISCELLANEOUS

            (a) A person or entity shall be deemed to be a holder of Registrable
Securities whenever such person or entity owns of record such Registrable
Securities. If the Company receives conflicting instructions, notices or
elections from two or more persons or entities with respect to the same
Registrable Securities, the Company shall act upon the basis of instructions,
notice or election received from the registered owner of such Registrable
Securities.

                                       15

<PAGE>

            (b) If, after the date hereof and prior to the Commission declaring
the Registration Statement to be filed pursuant to Section 2(a) effective under
the Securities Act, the Company grants to any Person any registration rights
with respect to any Company securities which are more favorable to such other
Person than those provided in this Agreement, then the Company forthwith shall
grant (by means of an amendment to this Agreement or otherwise) identical
registration rights to all Investors hereunder.

            (c) Except as may be otherwise provided herein, any notice or other
communication or delivery required or permitted hereunder shall be in writing
and shall be delivered personally or sent by certified mail, postage prepaid, or
by a nationally recognized overnight courier service, and shall be deemed given
when so delivered personally or by overnight courier service, or, if mailed,
three days after the date of deposit in the United States mails, as follows:

                  (i)   if to the Company, to:

                        Commodore Applied Technologies, Inc.
                        150 East 58th Street, Suite 3400
                        New York, NY 10155
                        Attention:
                        (212) 308-5800
                        (212) 752-0731 (Fax)

                        with a copy to:

                        Greenberg Traurig
                        200 Park Avenue
                        New York, NY 10166
                        Attention: Stephen A. Weiss, Esq.
                        (212) 801-9253
                        (212) 801-6400 (Fax)

                  (ii) if to the Initial Investor, to:

                        The Shaar Fund Ltd.,
                        do Levinson Capital Management
                        2 World Trade Center, Suite 1820
                        New York, NY 10048
                        Attention: Samuel Levinson
                        (212) 432-7711
                        (212) 432-7771 (Fax)

                                       16

<PAGE>

                        with a copy to:

                        Cadwalader, Wickersham & Taft
                        100 Maiden Lane
                        New York, NY 10038
                        Attention: Dennis J. Block, Esq.
                        (212) 504-5555
                        (212) 504-5557 (Fax)

                  (iii) if to any other Investor, at such address as such
      Investor shall have provided in writing to the Company.

The Company, the Initial Investor or any Investor may change the foregoing
address by notice given pursuant to this Section 11(c).

            (d) Failure of any party to exercise any right or remedy under this
Agreement or otherwise, or delay by a party in exercising such right or remedy,
shall not operate as a waiver thereof.

            (e) This Agreement shall be governed by and interpreted in
accordance with the laws of the State of New York. Each of the parties consents
to the jurisdiction of the federal courts whose districts encompass any part of
the City of New York or the state courts of the State of New York sitting in the
City of New York in connection with any dispute arising under this Agreement and
hereby waives, to the maximum extent permitted by law, any objection including
any objection based on forum non conveniens, to the bringing of any such
proceeding in such jurisdictions.

            (f) The remedies provided in this Agreement are cumulative and not
exclusive of any remedies provided by law. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction to be
invalid, illegal, void or unenforceable, the remainder of the terms, provisions,
covenants and restrictions set forth herein shall remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties
hereto shall use their best efforts to find and employ an alternative means to
achieve the same or substantially the same result as that contemplated by such
term, provision, covenant or restriction. It is hereby stipulated and declared
to be the intention of the parties that they would have executed the remaining
terms, provisions, covenants and restrictions without including any of such that
may be hereafter declared invalid, illegal, void or unenforceable.

            (g) The Company shall not enter into any agreement with respect to
its securities that is inconsistent with the rights granted to the holders of
Registrable Securities in this Agreement or otherwise conflicts with the
provisions hereof. The Company is not currently a party to any agreement
granting any registration rights with respect to any of its securities to any
person which conflicts with the Company's obligations hereunder or gives any
other party the right to include any securities in any Registration Statement
filed pursuant hereto, except for such rights and conflicts as have been
irrevocably waived. Without limiting the generality of the foregoing, without
the written consent of the holders of a majority in interest of the Registrable
Securities, the Company shall not grant to any person the right to request it to
register any of its

                                       17

<PAGE>

securities under the Securities Act unless the rights so granted are subject in
all respect to the prior rights of the holders of Registrable Securities set
forth herein, and are not otherwise in conflict or inconsistent with the
provisions of this Agreement. The restrictions on the Company's rights to grant
registration rights under this paragraph shall terminate on the date the
Registration Statement to be filed pursuant to Section 2(a) is declared
effective by the Commission.

            (h) This Agreement, the Securities Purchase Agreement, the Escrow
Instructions, dated as of a date even herewith (the "ESCROW INSTRUCTIONS"),
between the Company, the Initial Investor and Cadwalader, Wickersham & Taft, the
Preferred Shares and the Warrants constitute the entire agreement among the
parties hereto with respect to the subject matter hereof There are no
restrictions, promises, warranties or undertakings, other than those set forth
or referred to herein. This Agreement, the Securities Purchase Agreement, the
Escrow Instructions, the Certificate of Designation and the Warrants supersede
all prior agreements and undertakings among the parties hereto with respect to
the subject matter hereof.

            (i) Subject to the requirements of Section 8 hereof, this Agreement
shall inure to the benefit of and be binding upon the successors and assigns of
each of the parties hereto.

            (j) All pronouns and any variations thereof refer to the masculine,
feminine or neuter, singular or plural, as the context may require.

            (k) The headings in this Agreement are for convenience of reference
only and shall not limit or otherwise affect the meaning thereof.

            (1) The Company acknowledges that any failure by the Company to
perform its obligations under Section 3, or any delay in such performance could
result in direct damages to the Investors and the Company agrees that, in
addition to any other liability the Company may have by reason of any such
failure or delay, the Company shall be liable for all direct damages caused by
such failure or delay.

            (m) This Agreement may be executed in two or more counterparts, each
of which shall be deemed an original but all of which shall constitute one and
the same agreement. A facsimile transmission of this signed Agreement shall be
legal and binding on all parties hereto.

                            [SIGNATURE PAGE FOLLOWS.]

                                       18

<PAGE>

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

                               COMMODORE APPLIED TECHNOLOGIES, INC.

                               By: /s/ Paul Hannesson
                                   -------------------------------------
                                   Name: Paul Hannesson
                                   Title: CEO

                               THE SHAAR FUND LTD.

                               By:
                                   -------------------------------------
                                   Name: Samuel Levinson
                                   Title: Managing Director

                                       19

<PAGE>

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

                               COMMODORE APPLIED TECHNOLOGIES, INC.

                               By:
                                   -------------------------------------
                                   Name:
                                   Title:

                               THE SHAAR FUND LTD.

                               By: /s/ Samuel Levinson
                                   -------------------------------------
                                   Name: Samuel Levinson
                                   Title: Managing Director

                                       19