Exhibit 10.7


                     INVESTOR REGISTRATION RIGHTS AGREEMENT

      THIS REGISTRATION RIGHTS AGREEMENT (this "Agreement"), dated as of
September 15, 2005, by and among STARTECH ENVIRONMENTAL CORPORATION, a Colorado
corporation (the "Company"), and the undersigned investors listed on Schedule I
attached hereto (each, an "Investor" and collectively, the "Investors").

      WHEREAS:

      A. In connection with the Securities Purchase Agreement by and among the
parties hereto of even date herewith (the "Securities Purchase Agreement"), the
Company has agreed, upon the terms and subject to the conditions of the
Securities Purchase Agreement, to issue and sell to the Investors secured
convertible debentures (the "Convertible Debentures") which shall be convertible
into that number of shares of the Company's common stock, no par value per share
(the "Common Stock"), pursuant to the terms of the Securities Purchase Agreement
for an aggregate purchase price of up to Two Million Three Hundred Thousand
Dollars ($2,300,000). Capitalized terms not defined herein shall have the
meaning ascribed to them in the Securities Purchase Agreement.

      B. To induce the Investors to execute and deliver the Securities Purchase
Agreement, the Company has agreed to provide certain registration rights under
the Securities Act of 1933, as amended, and the rules and regulations there
under, or any similar successor statute (collectively, the "Securities Act"),
and applicable state securities laws.

      NOW, THEREFORE, in consideration of the premises and the mutual covenants
contained herein and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Company and the Investors
hereby agree as follows:

      1. DEFINITIONS.

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

         (a) "Person" means a corporation, a limited liability company, an
association, a partnership, an organization, a business, an individual, a
governmental or political subdivision thereof or a governmental agency.

         (b) "Register," "registered," and "registration" refer to a
registration effected by preparing and filing one or more Registration
Statements (as defined below) in compliance with the Securities Act and pursuant
to Rule 415 under the Securities Act or any successor rule providing for
offering securities on a continuous or delayed basis ("Rule 415"), and the
declaration or ordering of effectiveness of such Registration Statement(s) by
the United States Securities and Exchange Commission (the "SEC").

<PAGE>

         (c) "Registrable Securities" means the shares of Common Stock issuable
to the Investors upon conversion of the Convertible Debentures pursuant to the
Securities Purchase Agreement and the Warrant Shares, as this term is defined in
the Securities Purchase Agreement.

         (d) "Registration Statement" means a registration statement under the
Securities Act which covers the Registrable Securities.

      2. REGISTRATION.

         (a) Subject to the terms and conditions of this Agreement, the Company
shall prepare and file, no later than thirty (30) days from the date hereof (the
"Scheduled Filing Deadline"), with the SEC a registration statement on Form S-1
or SB-2 (or, if the Company is then eligible, on Form S-3) under the Securities
Act (the "Initial Registration Statement") for the resale by the Investors of
the Registrable Securities, which includes at least 1,250,000 shares of Common
Stock to be issued upon conversion of the Convertible Debentures and 650,000
shares of the Common Stock underlying the Warrant of even date herewith. The
Company shall cause the Registration Statement to remain effective until the
earlier of (A) all of the Registrable Securities have been sold and (B) the date
on which the Registrable Securities may be sold without any volume restrictions
pursuant to Rule 144(k) of the Securities Act. Prior to the filing of the
Registration Statement with the SEC, the Company shall furnish a copy of the
Initial Registration Statement to the Investors for their review and comment.
The Investors shall furnish comments on the Initial Registration Statement to
the Company within twenty-four (24) hours of the receipt thereof from the
Company.

         (b) Effectiveness of the Initial Registration Statement. The Company
shall use its best efforts (i) to have the Initial Registration Statement
declared effective by the SEC no later than one hundred twenty (120) days after
the date hereof (the "Scheduled Effective Deadline") and (ii) to insure that the
Initial Registration Statement and any subsequent Registration Statement remains
in effect until all of the Registrable Securities have been sold, subject to the
terms and conditions of this Agreement. It shall be an event of default
hereunder if the Initial Registration Statement is not filed by the Scheduled
Filing Deadline or declared effective by the SEC by the Scheduled Effective
Deadline.

         (c) Failure to File or Obtain Effectiveness of the Registration
Statement. In the event the Registration Statement is not filed by the Scheduled
Filing Deadline or is not declared effective by the SEC on or before the
Scheduled Effective Deadline, or if after the Registration Statement has been
declared effective by the SEC, sales cannot be made pursuant to the Registration
Statement (whether because of a failure to keep the Registration Statement
effective, failure to disclose such information as is necessary for sales to be
made pursuant to the Registration Statement, failure to register sufficient
shares of Common Stock or otherwise then as partial relief for the damages to
any holder of Registrable Securities by reason of any such delay in or reduction
of its ability to sell the underlying shares of Common Stock (which remedy shall
not be exclusive of any other remedies at law or in equity), the Company will
pay as liquidated damages (the "Liquidated Damages") to the holder, at the
holder's option, either a cash amount or shares of the Company's Common Stock
within three (3) business days, after demand therefore, equal to two percent
(2%) of the liquidated value of the Convertible

                                       2
<PAGE>

Debentures outstanding as Liquidated Damages for each thirty (30) day period
after the Scheduled Filing Deadline or the Scheduled Effective Deadline as the
case may be.

         (d) Liquidated Damages. The Company and the Investor hereto acknowledge
and agree that the sums payable under subsection 2(c) above shall constitute
liquidated damages and not penalties and are in addition to all other rights of
the Investor, including the right to call a default. The parties further
acknowledge that (i) the amount of loss or damages likely to be incurred is
incapable or is difficult to precisely estimate, (ii) the amounts specified in
such subsections bear a reasonable relationship to, and are not plainly or
grossly disproportionate to, the probable loss likely to be incurred in
connection with any failure by the Company to obtain or maintain the
effectiveness of a Registration Statement, (iii) one of the reasons for the
Company and the Investor reaching an agreement as to such amounts was the
uncertainty and cost of litigation regarding the question of actual damages, and
(iv) the Company and the Investor are sophisticated business parties and have
been represented by sophisticated and able legal counsel and negotiated this
Agreement at arm's length.

      3. RELATED OBLIGATIONS.

         (a) The Company shall keep the Registration Statement effective
pursuant to Rule 415 at all times until earlier of (A) the date on which the
Investor shall have sold all the Registrable Securities covered by such
Registration Statement or (B) the date on which the Registrable Securities may
be sold without any volume restrictions pursuant to Rule 144(k) of the
Securities Act (the "Registration Period"), which Registration Statement
(including any amendments or supplements thereto and prospectuses contained
therein) shall not contain any 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 in which they were made, not
misleading.

         (b) The Company shall prepare and file with the SEC such amendments
(including post-effective amendments) and supplements to a Registration
Statement and the prospectus used in connection with such Registration
Statement, which prospectus is to be filed pursuant to Rule 424 promulgated
under the Securities Act, as may be necessary to keep such Registration
Statement effective at all times during the Registration Period, and, during
such period, comply with the provisions of the Securities Act with respect to
the disposition of all Registrable Securities of the Company covered by such
Registration Statement until such time as all of such Registrable Securities
shall have been disposed of in accordance with the intended methods of
disposition by the seller or sellers thereof as set forth in such Registration
Statement. In the case of amendments and supplements to a Registration Statement
which are required to be filed pursuant to this Agreement (including pursuant to
this Section 3(b)) by reason of the Company's filing a report on Form 10-KSB,
Form 10-QSB or Form 8-K or any analogous report under the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), the Company shall incorporate such
report by reference into the Registration Statement, if applicable, or shall
file such amendments or supplements with the SEC but in no event later than ten
(10) days after the date on which the Exchange Act report is filed which created
the requirement for the Company to amend or supplement the Registration
Statement.

                                       3
<PAGE>

         (c) The Company shall furnish or make available to each Investor whose
Registrable Securities are included in any Registration Statement, without
charge, (i) at least one (1) copy of such Registration Statement as declared
effective by the SEC and any amendment(s) thereto, including financial
statements and schedules, all documents incorporated therein by reference, all
exhibits and each preliminary prospectus, (ii) ten (10) copies of the final
prospectus included in such Registration Statement and all amendments and
supplements thereto (or such other number of copies as such Investor may
reasonably request) and (iii) such other documents as such Investor may
reasonably request from time to time in order to facilitate the disposition of
the Registrable Securities owned by such Investor.

         (d) The Company shall use its commercially reasonable efforts to (i)
register and qualify the Registrable Securities covered by a Registration
Statement under such other securities or "blue sky" laws of such jurisdictions
in the United States as any Investor reasonably requests, (ii) prepare and file
in those jurisdictions, such amendments (including post-effective amendments)
and supplements to such registrations and qualifications as may be necessary to
maintain the effectiveness thereof during the Registration Period, (iii) take
such other actions as may be necessary to maintain such registrations and
qualifications in effect at all times during the Registration Period, and (iv)
take all other 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 (w) make any change to its articles of incorporation or by-laws, (x)
qualify to do business in any jurisdiction where it would not otherwise be
required to qualify but for this Section 3(d), (y) subject itself to general
taxation in any such jurisdiction, or (z) file a general consent to service of
process in any such jurisdiction. The Company shall promptly notify each
Investor who holds Registrable Securities of the receipt by the Company of any
notification with respect to the suspension of the registration or qualification
of any of the Registrable Securities for sale under the securities or "blue sky"
laws of any jurisdiction in the United States or its receipt of actual notice of
the initiation or threat of any proceeding for such purpose.

         (e) As promptly as practicable after becoming aware of such event or
development, the Company shall notify each Investor in writing of the happening
of any event as a result of which the prospectus included in a Registration
Statement, as then in effect, includes an untrue statement of a material fact or
omission 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 (provided that in no event shall such notice contain any
material, nonpublic information), and promptly prepare a supplement or amendment
to such Registration Statement to correct such untrue statement or omission, and
deliver or make available ten (10) copies of such supplement or amendment to
each Investor. The Company shall also promptly notify each Investor in writing
(i) when a prospectus or any prospectus supplement or post-effective amendment
has been filed, and when a Registration Statement or any post-effective
amendment has become effective (notification of such effectiveness shall be
delivered to each Investor by facsimile on the same day of such effectiveness),
(ii) of any request by the SEC for amendments or supplements to a Registration
Statement or related prospectus or related information, and (iii) of the
Company's reasonable determination that a post-effective amendment to a
Registration Statement would be appropriate.

                                       4
<PAGE>

         (f) The Company shall use its best efforts to prevent the issuance of
any stop order or other suspension of effectiveness of a Registration Statement,
or the suspension of the qualification of any of the Registrable Securities for
sale in any jurisdiction within the United States of America and, if such an
order or suspension is issued, to obtain the withdrawal of such order or
suspension at the earliest possible moment and to notify each Investor who holds
Registrable Securities being sold of the issuance of such order and the
resolution thereof or its receipt of actual notice of the initiation or threat
of any proceeding for such purpose.

         (g) The Company shall make available for inspection by (i) any Investor
and (ii) one (1) firm of accountants or other agents retained by the Investors
(collectively, the "Inspectors") all pertinent financial and other records, and
pertinent corporate documents and properties of the Company (collectively, the
"Records"), as shall be reasonably deemed necessary by each Inspector, and cause
the Company's officers, directors and employees to supply all information which
any Inspector may reasonably request; provided, however, that each Inspector
shall agree, and each Investor hereby agrees, to hold in strict confidence and
shall not make any disclosure (except to an Investor) or use any Record or other
information which the Company determines in good faith to be confidential, and
of which determination the Inspectors are so notified, unless (a) the disclosure
of such Records is necessary to avoid or correct a misstatement or omission in
any Registration Statement or is otherwise required under the Securities Act,
(b) the release of such Records is ordered pursuant to a final, non-appealable
subpoena or order from a court or government body of competent jurisdiction, or
(c) the information in such Records has been made generally available to the
public other than by disclosure in violation of this or any other agreement of
which the Inspector and the Investor has knowledge. Each Investor agrees that it
shall, upon learning that disclosure of such Records is sought in or by a court
or governmental body of competent jurisdiction or through other means, give
prompt notice to the Company and allow the Company, at its expense, to undertake
appropriate action to prevent disclosure of, or to obtain a protective order
for, the Records deemed confidential.

         (h) The Company shall hold in confidence and not make any disclosure of
information concerning an Investor provided to the Company unless (i) disclosure
of such information is necessary to comply with federal or state securities
laws, (ii) the disclosure of such information is necessary to avoid or correct a
misstatement or omission in any Registration Statement, (iii) the release of
such information is ordered pursuant to a subpoena or other final,
non-appealable order from a court or governmental body of competent
jurisdiction, or (iv) such information has been made generally available to the
public other than by disclosure in violation of this Agreement or any other
agreement. The Company agrees that it shall, upon learning that disclosure of
such information concerning an Investor is sought in or by a court or
governmental body of competent jurisdiction or through other means, give prompt
written notice to such Investor and allow such Investor, at the Investor's
expense, to undertake appropriate action to prevent disclosure of, or to obtain
a protective order for, such information.

         (i) The Company shall use its best efforts either to cause all the
Registrable Securities covered by a Registration Statement (i) to be listed on
each securities exchange on which securities of the same class or series issued
by the Company are then listed or (ii) the inclusion for quotation on the
National Association of Securities Dealers, Inc. OTC Bulletin

                                       5
<PAGE>

Board for such Registrable Securities. The Company shall pay all fees and
expenses in connection with satisfying its obligation under this Section 3(j).

         (j) The Company shall cooperate with the Investors who hold Registrable
Securities being offered and, to the extent applicable, to facilitate the timely
preparation and delivery of certificates (not bearing any restrictive legend so
long as the issuance of such shares is in connection with a sale transaction and
the prospectus delivery requirements have been met) representing the Registrable
Securities to be offered pursuant to a Registration Statement and enable such
certificates to be in such denominations or amounts, as the case may be, as the
Investors may reasonably request and registered in such names as the Investors
may request.

         (k) The Company shall use its best efforts to cause the Registrable
Securities covered by the applicable Registration Statement to be registered
with or approved by such other governmental agencies or authorities as may be
necessary to consummate the disposition of such Registrable Securities.

         (l) The Company shall make generally available to its security holders
as soon as practical, but not later than ninety (90) days after the close of the
period covered thereby, an earnings statement (in form complying with the
provisions of Rule 158 under the Securities Act) covering a twelve (12) month
period beginning not later than the first day of the Company's fiscal quarter
next following the effective date of the Registration Statement.

         (m) The Company shall otherwise use its best efforts to comply with all
applicable rules and regulations of the SEC in connection with any registration
hereunder.

         (n) Within two (2) business days after a Registration Statement which
covers Registrable Securities is declared effective by the SEC, the Company
shall deliver, and shall cause legal counsel for the Company to deliver, to the
transfer agent for such Registrable Securities (with copies to the Investors
whose Registrable Securities are included in such Registration Statement)
confirmation that such Registration Statement has been declared effective by the
SEC in the form attached hereto as Exhibit A.

         (o) The Company shall take all other reasonable actions necessary to
expedite and facilitate disposition by the Investors of Registrable Securities
pursuant to a Registration Statement.

      4. OBLIGATIONS OF THE INVESTORS.

      Each Investor agrees that, upon receipt of any notice from the Company of
the happening of any event of the kind described in Section 3(f) or the first
sentence of 3(e), such Investor will immediately discontinue disposition of
Registrable Securities pursuant to any Registration Statement(s) covering such
Registrable Securities until such Investor's receipt of the copies of the
supplemented or amended prospectus contemplated by Section 3(e) or receipt of
notice that no supplement or amendment is required. Notwithstanding anything to
the contrary, the Company shall cause its transfer agent to deliver unlegended
certificates (so long as the issuance of such shares is in connection with a
sale transaction and the prospectus delivery requirements have been met) for
shares of Common Stock to a transferee of an Investor in accordance with the


                                       6
<PAGE>

terms of the Securities Purchase Agreement in connection with any sale of
Registrable Securities with respect to which an Investor has entered into a
contract for sale prior to the Investor's receipt of a notice from the Company
of the happening of any event of the kind described in Section 3(f) or the first
sentence of 3(e) and for which the Investor has not yet settled.

      5. EXPENSES OF REGISTRATION.

      All expenses incurred in connection with registrations, filings or
qualifications pursuant to Sections 2 and 3, including, without limitation, all
registration, listing and qualifications fees, printers, legal and accounting
fees shall be paid by the Company.

      6. INDEMNIFICATION.

      With respect to Registrable Securities which are included in a
Registration Statement under this Agreement:

         (a) To the fullest extent permitted by law, the Company will, and
hereby does, indemnify, hold harmless and defend each Investor, the directors,
officers, partners, employees, agents, representatives of, and each Person, if
any, who controls any Investor within the meaning of the Securities Act or the
Exchange Act (each, an "Indemnified Person"), against any losses, claims,
damages, liabilities, judgments, fines, penalties, charges, costs, reasonable
attorneys' fees, amounts paid in settlement or expenses, joint or several
(collectively, "Claims") incurred in investigating, preparing or defending any
action, claim, suit, inquiry, proceeding, investigation or appeal taken from the
foregoing by or before any court or governmental, administrative or other
regulatory agency, body or the SEC, whether pending or threatened, whether or
not an indemnified party is or may be a party thereto ("Indemnified Damages"),
to which any of them may become subject insofar as such Claims (or actions or
proceedings, whether commenced or threatened, in respect thereof) arise out of
or are based upon: (i) any untrue statement or alleged untrue statement of a
material fact in a Registration Statement or any post-effective amendment
thereto or in any filing made in connection with the qualification of the
offering under the securities or other "blue sky" laws of any jurisdiction in
which Registrable Securities are offered ("Blue Sky Filing"), or the omission or
alleged omission to state a material fact required to be stated therein or
necessary to make the statements therein not misleading; (ii) any untrue
statement or alleged untrue statement of a material fact contained in any final
prospectus (as amended or supplemented, if the Company files any amendment
thereof or supplement thereto with the SEC) or the omission or alleged omission
to state therein any material fact necessary to make the statements made
therein, in light of the circumstances under which the statements therein were
made, not misleading; or (iii) any violation or alleged violation by the Company
of the Securities Act, the Exchange Act, any other law, including, without
limitation, any state securities law, or any rule or regulation there under
relating to the offer or sale of the Registrable Securities pursuant to a
Registration Statement (the matters in the foregoing clauses (i) through (iii)
being, collectively, "Violations"). The Company shall reimburse the Investors
and each such controlling person promptly as such expenses are incurred and are
due and payable, for any legal fees or disbursements or other reasonable
expenses incurred by them in connection with investigating or defending any such
Claim. Notwithstanding anything to the contrary contained herein, the
indemnification agreement contained in this Section 6(a): (x) shall not apply to
a

                                       7
<PAGE>

Claim by an Indemnified Person arising out of or based upon a Violation which
occurs in reliance upon and in conformity with information furnished in writing
to the Company by such Indemnified Person expressly for use in connection with
the preparation of the Registration Statement or any such amendment thereof or
supplement thereto; (y) shall not be available to the extent such Claim is based
on a failure of the Investor to deliver or to cause to be delivered the
prospectus made available by the Company, if such prospectus was timely made
available by the Company pursuant to Section 3(c); and (z) shall not apply to
amounts paid in settlement of any Claim if such settlement is effected without
the prior written consent of the Company, which consent shall not be
unreasonably withheld. Such indemnity shall remain in full force and effect
regardless of any investigation made by or on behalf of the Indemnified Person
and shall survive the transfer of the Registrable Securities by the Investors
pursuant to Section 9 hereof.

         (b) In connection with a Registration Statement, each Investor agrees
to severally and not jointly indemnify, hold harmless and defend, to the same
extent and in the same manner as is set forth in Section 6(a), the Company, each
of its directors, each of its officers, employees, representatives, or agents
and each Person, if any, who controls the Company within the meaning of the
Securities Act or the Exchange Act (each an "Indemnified Party"), against any
Claim or Indemnified Damages to which any of them may become subject, under the
Securities Act, the Exchange Act or otherwise, insofar as such Claim or
Indemnified Damages arise out of or is based upon any Violation, in each case to
the extent, and only to the extent, that such Violation occurs in reliance upon
and in conformity with written information furnished to the Company by such
Investor expressly for use in connection with such Registration Statement; and,
subject to Section 6(d), such Investor will reimburse any legal or other
expenses reasonably incurred by them in connection with investigating or
defending any such Claim; provided, however, that the indemnity agreement
contained in this Section 6(b) and the agreement with respect to contribution
contained in Section 7 shall not apply to amounts paid in settlement of any
Claim if such settlement is effected without the prior written consent of such
Investor, which consent shall not be unreasonably withheld; provided, further,
however, that the Investor shall be liable under this Section 6(b) for only that
amount of a Claim or Indemnified Damages as does not exceed the net proceeds to
such Investor as a result of the sale of Registrable Securities pursuant to such
Registration Statement. Such indemnity shall remain in full force and effect
regardless of any investigation made by or on behalf of such Indemnified Party
and shall survive the transfer of the Registrable Securities by the Investors
pursuant to Section 9. Notwithstanding anything to the contrary contained
herein, the indemnification agreement contained in this Section 6(b) with
respect to any prospectus shall not inure to the benefit of any Indemnified
Party if the untrue statement or omission of material fact contained in the
prospectus was corrected and such new prospectus was delivered to each Investor
prior to such Investor's use of the prospectus to which the Claim relates.

         (c) Promptly after receipt by an Indemnified Person or Indemnified
Party under this Section 6 of notice of the commencement of any action or
proceeding (including any governmental action or proceeding) involving a Claim,
such Indemnified Person or Indemnified Party shall, if a Claim in respect
thereof is to be made against any indemnifying party under this Section 6,
deliver to the indemnifying party a written notice of the commencement thereof,
and the indemnifying party shall have the right to participate in, and, to the
extent the indemnifying party so desires, jointly with any other indemnifying
party similarly noticed, to assume control of

                                       8
<PAGE>

the defense thereof with counsel mutually satisfactory to the indemnifying party
and the Indemnified Person or the Indemnified Party, as the case may be;
provided, however, that an Indemnified Person or Indemnified Party shall have
the right to retain its own counsel with the fees and expenses of not more than
one (1) counsel for such Indemnified Person or Indemnified Party to be paid by
the indemnifying party, if, in the reasonable opinion of counsel retained by the
indemnifying party, the representation by such counsel of the Indemnified Person
or Indemnified Party and the indemnifying party would be inappropriate due to
actual or potential differing interests between such Indemnified Person or
Indemnified Party and any other party represented by such counsel in such
proceeding. The Indemnified Party or Indemnified Person shall cooperate fully
with the indemnifying party in connection with any negotiation or defense of any
such action or claim by the indemnifying party and shall furnish to the
indemnifying party all information reasonably available to the Indemnified Party
or Indemnified Person which relates to such action or claim. The indemnifying
party shall keep the Indemnified Party or Indemnified Person fully apprised at
all times as to the status of the defense or any settlement negotiations with
respect thereto. No indemnifying party shall be liable for any settlement of any
action, claim or proceeding effected without its prior written consent;
provided, however, that the indemnifying party shall not unreasonably withhold,
delay or condition its consent. No indemnifying party shall, without the prior
written consent of the Indemnified Party or Indemnified Person, consent to entry
of any judgment or enter into any settlement or other compromise which does not
include as an unconditional term thereof the giving by the claimant or plaintiff
to such Indemnified Party or Indemnified Person of a release from all liability
in respect to such claim or litigation. Following indemnification as provided
for hereunder, the indemnifying party shall be subrogated to all rights of the
Indemnified Party or Indemnified Person with respect to all third parties, firms
or corporations relating to the matter for which indemnification has been made.
The failure to deliver written notice to the indemnifying party within a
reasonable time of the commencement of any such action shall not relieve such
indemnifying party of any liability to the Indemnified Person or Indemnified
Party under this Section 6, except to the extent that the indemnifying party is
prejudiced in its ability to defend such action.

         (d) The indemnification required by this Section 6 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 Indemnified Damages are incurred.

         (e) The indemnity agreements contained herein shall be in addition to
(i) any cause of action or similar right of the Indemnified Party or Indemnified
Person against the indemnifying party or others, and (ii) any liabilities the
indemnifying party may be subject to pursuant to the law.

      7. CONTRIBUTION.

      To the extent any indemnification by an indemnifying party is prohibited
or limited by law, the indemnifying party agrees to make the maximum
contribution with respect to any amounts for which it would otherwise be liable
under Section 6 to the fullest extent permitted by law; provided, however, that:
(i) no seller of Registrable Securities guilty of fraudulent misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled to

                                       9
<PAGE>

contribution from any seller of Registrable Securities who was not guilty of
fraudulent misrepresentation; and (ii) contribution by any seller of Registrable
Securities shall be limited in amount to the net amount of proceeds received by
such seller from the sale of such Registrable Securities.

      8. REPORTS UNDER THE EXHANGE ACT.

      With a view to making available to the Investors the benefits of Rule 144
promulgated under the Securities Act or any similar rule or regulation of the
SEC 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:

         (a) make and keep public information available, as those terms are
understood and defined in Rule 144;

         (b) file with the SEC in a timely manner all reports and other
documents required of the Company under the Securities Act and the Exchange Act
so long as the Company remains subject to such requirements (it being understood
that nothing herein shall limit the Company's obligations under Section 4(c) of
the Securities Purchase Agreement) and the filing of such reports and other
documents as are required by the applicable provisions of Rule 144; and

         (c) furnish to each Investor so long as such Investor owns Registrable
Securities, promptly upon request, (i) a written statement by the Company that
it has complied with the reporting requirements of Rule 144, the Securities Act
and the Exchange Act, (ii) a copy of the most recent annual or quarterly report
of the Company and such other reports and documents so filed by the Company, and
(iii) such other information as may be reasonably requested to permit the
Investors to sell such securities pursuant to Rule 144 without registration.

      9. AMENDMENT OF REGISTRATION RIGHTS.

      Provisions 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 then hold at least a majority of the Registrable Securities outstanding at
such time. Any amendment or waiver effected in accordance with this Section 9
shall be binding upon each Investor and the Company. No such amendment shall be
effective to the extent that it applies to fewer than all of the holders of the
Registrable Securities. No consideration shall be offered or paid to any Person
to amend or consent to a waiver or modification of any provision of any of this
Agreement unless the same consideration also is offered to all of the parties to
this Agreement.

      10. MISCELLANEOUS.

         (a) A Person is deemed to be a holder of Registrable Securities
whenever such Person owns or is deemed to own of record such Registrable
Securities. If the Company receives conflicting instructions, notices or
elections from two (2) or more Persons with respect to the

                                       10
<PAGE>

same Registrable Securities, the Company shall act upon the basis of
instructions, notice or election received from the registered owner of such
Registrable Securities.

         (b) Any notices, consents, waivers or other communications required or
permitted to be given under the terms of this Agreement must be in writing and
will be deemed to have been delivered: (i) upon receipt, when delivered
personally; (ii) upon receipt, when sent by facsimile (provided confirmation of
transmission is mechanically or electronically generated and kept on file by the
sending party); or (iii) one (1) business day after deposit with a nationally
recognized overnight delivery service, in each case properly addressed to the
party to receive the same. The addresses and facsimile numbers for such
communications shall be:

If to the Company, to:          Startech Environmental Corporation
                                15 Old Danbury Road - Suite 203
                                Wilton, CT 06897
                                Attention:  Peter J. Scanlon
                                Telephone:  (203) 762-2499
                                Facsimile:  (203) 761-0839

With Copy to:                   Kramer Levin Naftalis & Frankel, LLP
                                1177 Avenue of the Americas
                                New York, NY 10036
                                Attention:  Scott S. Rosenblum, Esq.
                                Telephone:  (212) 715-9411
                                Facsimile:  (212) 715-8411

If to an Investor, to its address and facsimile number on the Schedule of
Investors attached hereto, with copies to such Investor's representatives as set
forth on the Schedule of Investors or to such other address and/or facsimile
number and/or to the attention of such other person as the recipient party has
specified by written notice given to each other party five (5) days prior to the
effectiveness of such change. Written confirmation of receipt (A) given by the
recipient of such notice, consent, waiver or other communication, (B)
mechanically or electronically generated by the sender's facsimile machine
containing the time, date, recipient facsimile number and an image of the first
page of such transmission or (C) provided by a courier or overnight courier
service shall be rebuttable evidence of personal service, receipt by facsimile
or receipt from a nationally recognized overnight delivery service in accordance
with clause (i), (ii) or (iii) above, respectively.

         (c) 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.

         (d) The laws of the State of New Jersey shall govern all issues
concerning the relative rights of the Company and the Investors as its
stockholders. All other questions concerning the construction, validity,
enforcement and interpretation of this Agreement shall be governed by the
internal laws of the State of New Jersey, without giving effect to any choice of
law or conflict of law provision or rule (whether of the State of New Jersey or
any other

                                       11
<PAGE>

jurisdiction) that would cause the application of the laws of any jurisdiction
other than the State of New Jersey. Each party hereby irrevocably submits to the
non-exclusive jurisdiction of the Superior Courts of the State of New Jersey,
sitting in Hudson County, New Jersey and federal courts for the District of New
Jersey sitting Newark, New Jersey, for the adjudication of any dispute hereunder
or in connection herewith or with any transaction contemplated hereby or
discussed herein, and hereby irrevocably waives, and agrees not to assert in any
suit, action or proceeding, any claim that it is not personally subject to the
jurisdiction of any such court, that such suit, action or proceeding is brought
in an inconvenient forum or that the venue of such suit, action or proceeding is
improper. Each party hereby irrevocably waives personal service of process and
consents to process being served in any such suit, action or proceeding by
mailing a copy thereof to such party at the address for such notices to it under
this Agreement and agrees that such service shall constitute good and sufficient
service of process and notice thereof. Nothing contained herein shall be deemed
to limit in any way any right to serve process in any manner permitted by law.
If any provision of this Agreement shall be invalid or unenforceable in any
jurisdiction, such invalidity or unenforceability shall not affect the validity
or enforceability of the remainder of this Agreement in that jurisdiction or the
validity or enforceability of any provision of this Agreement in any other
jurisdiction. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND
AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE
HEREUNDER OR IN CONNECTION HEREWITH OR ARISING OUT OF THIS AGREEMENT OR ANY
TRANSACTION CONTEMPLATED HEREBY.

         (e) This Agreement, the Irrevocable Transfer Agent Instructions, the
Securities Purchase Agreement and related documents including the Convertible
Debenture and the Escrow Agreement dated the date hereof by and among the
Company, the Investors set forth on the Schedule of Investors attached hereto,
and David Gonzalez, Esq. (the "Escrow Agreement") and the Security Agreement
dated the date hereof (the "Security Agreement") constitute the entire agreement
among the parties hereto with respect to the subject matter hereof and thereof.
There are no restrictions, promises, warranties or undertakings, other than
those set forth or referred to herein and therein. This Agreement, the
Irrevocable Transfer Agent Instructions, the Securities Purchase Agreement and
related documents including the Convertible Debenture, the Escrow Agreement and
the Security Agreement supersede all prior agreements and understandings among
the parties hereto with respect to the subject matter hereof and thereof.

         (f) This Agreement shall inure to the benefit of and be binding upon
the permitted successors and assigns of each of the parties hereto.

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

         (h) This Agreement may be executed in identical counterparts, each of
which shall be deemed an original but all of which shall constitute one and the
same agreement. This Agreement, once executed by a party, may be delivered to
the other party hereto by facsimile transmission of a copy of this Agreement
bearing the signature of the party so delivering this Agreement.

                                       12
<PAGE>

         (i) Each party shall do and perform, or cause to be done and performed,
all such further acts and things, and shall execute and deliver all such other
agreements, certificates, instruments and documents, as the other party may
reasonably request in order to carry out the intent and accomplish the purposes
of this Agreement and the consummation of the transactions contemplated hereby.

The language used in this Agreement will be deemed to be the language chosen by
the parties to express their mutual intent and no rules of strict construction
will be applied against any party.

         (j) This Agreement is intended for the benefit of the parties hereto
and their respective permitted successors and assigns, and is not for the
benefit of, nor may any provision hereof be enforced by, any other Person.


                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]




                                       13

<PAGE>

      IN WITNESS WHEREOF, the parties have caused this Investor Registration
Rights Agreement to be duly executed as of day and year first above written.

                                         COMPANY:
                                         STARTECH ENVIRONMENTAL CORPORATION

                                         By:__________________________________
                                         Name:  Peter J. Scanlon
                                         Title: CFO





                                       14

<PAGE>

<TABLE>
<CAPTION>

                                   SCHEDULE I
                                   ----------

                              SCHEDULE OF INVESTORS
                              ---------------------


                                                                               Address/Facsimile
          Name                             Signature                          Number of Investors
          ----                             ---------                          -------------------

<S>                                <C>                                    <C>
Cornell Capital Partners, LP       By:   Yorkville Advisors, LLC           101 Hudson Street - Suite 3700
                                   Its:  General Partner                   Jersey City, NJ  07303
                                                                           Facsimile: (201) 985-8266

                                   By:____________________________
                                   Name: Mark Angelo
                                   Its:  Portfolio Manager

With a copy to:                    Troy Rillo, Esq.                        101 Hudson Street - Suite 3700
                                                                           Jersey City, NJ 07302
                                                                           Facsimile: (201) 985-8266
</TABLE>

<PAGE>

                                    EXHIBIT A

                         FORM OF NOTICE OF EFFECTIVENESS
                            OF REGISTRATION STATEMENT
                            -------------------------


Attention:

      Re:   STARTECH ENVIRONMENTAL CORPORATION
            ----------------------------------

Ladies and Gentlemen:

      We are counsel to Startech Environmental Corporation, a Colorado
corporation (the "Company"), and have represented the Company in connection with
that certain Securities Purchase Agreement (the "Securities Purchase Agreement")
entered into by and among the Company and the investors named therein
(collectively, the "Investors") pursuant to which the Company issued to the
Investors shares of its Common Stock, no par value per share (the "Common
Stock"). Pursuant to the Purchase Agreement, the Company also has entered into a
Registration Rights Agreement with the Investors (the "Investor Registration
Rights Agreement") pursuant to which the Company agreed, among other things, to
register the Registrable Securities (as defined in the Registration Rights
Agreement) under the Securities Act of 1933, as amended (the "Securities Act").
In connection with the Company's obligations under the Registration Rights
Agreement, on ____________ ____, the Company filed a Registration Statement on
Form ________ (File No. 333-_____________) (the "Registration Statement") with
the Securities and Exchange SEC (the "SEC") relating to the Registrable
Securities which names each of the Investors as a selling stockholder there
under.

      In connection with the foregoing, we advise you that a member of the SEC's
staff has advised us by telephone that the SEC has entered an order declaring
the Registration Statement effective under the Securities Act at [ENTER TIME OF
EFFECTIVENESS] on [ENTER DATE OF EFFECTIVENESS] and we have no knowledge, after
telephonic inquiry of a member of the SEC's staff, that any stop order
suspending its effectiveness has been issued or that any proceedings for that
purpose are pending before, or threatened by, the SEC and the Registrable
Securities are available for resale under the Securities Act pursuant to the
Registration Statement.

                                    Very truly yours,

                                    [Law Firm]

                                    By:________________________________

cc:   [LIST NAMES OF INVESTORS]