Exhibit 5.1

                                                                January 18, 2005



Crompton Corporation
199 Benson Road
Middlebury, Connectcut 06749

         Re:    Crompton Corporation and the Subsidiary
                Guarantors listed on Schedules I and II hereto
                Registration Statement on Form S-4
                ------------------------------------------------------

Ladies and Gentlemen:

         We have acted as special counsel to Crompton Corporation, a Delaware
corporation (the "Company"), in connection with the public offering of
$375,000,000 aggregate principal amount of the Company's 9 7/8% Senior Notes due
2012 (the "9 7/8% Senior Exchange Notes") and $225,000,000 aggregate principal
amount of the Company's Senior Floating Rate Notes due 2010 (the "Senior
Floating Rate Exchange Notes" and, together with the 9 7/8% Senior Exchange
Notes, the "Exchange Notes") and the related guarantees of the Exchange Notes by
the Subsidiary Guarantors (as defined below) (the "Subsidiary Guarantees").

         The 9 7/8% Senior Exchange Notes are to be issued pursuant to an
exchange offer (the "Exchange Offer") in exchange for a like principal amount of
the issued and outstanding 9 7/8% Senior Notes due 2012 (the "Original 9 7/8%
Senior Notes") together with related guarantees thereof by the Subsidiary
Guarantors under the Indenture, dated as of August 16, 2004, by and among the
Company, the Subsidiary Guarantors, Wells Fargo Bank, National Association, as
trustee (the "Trustee") and Deutsche Bank Trust Company Americas, as Note
Custodian, Paying Agent, Registrar and Calculation Agent ("DBTCA"), relating to
the Original 9 7/8% Senior Notes (the "9 7/8% Senior Notes Indenture"), as
contemplated by the Registration Rights Agreement, dated as of August 16, 2004
(the "Registration Rights Agreement"), by and among the Company, the Subsidiary
Guarantors, and Deutsche Bank Securities Inc., Bank Of America Securities LLC,
Citigroup Global Markets Inc., and Credit Suisse First Boston LLC, as Initial
Purchasers. The Senior Floating Rate Exchange Notes are to be issued pursuant to
the Exchange Offer in exchange for a like principal amount of the issued and
outstanding Senior Floating Rate Notes due 2010 of the Company (the "Original
Senior Floating Rate Notes" and, together with the Original 9 7/8% Senior Notes,
the "Original Notes") together with related guarantees thereof by the Subsidiary
Guarantors under the Indenture, dated as of August 16, 2004, by and among the
Company, the Subsidiary Guarantors, the Trustee and DBTCA, relating to the
Original Senior Floating Rate Notes (the "Senior Floating Rate Note Indenture"
and, together with the 9 7/8% Senior Notes Indenture, the "Indentures"), as
contemplated by the Registration Rights Agreement. The Indentures provide for
the Subsidiary Guarantees by certain subsidiaries of the Company incorporated or
formed pursuant to the laws of the State of Delaware, and listed on Schedule I
hereto (the "Delaware Guarantors"), and by certain subsidiaries of the Company
listed on Schedule II hereto (the "Non-Delaware Guarantors" and, together with
the Delaware Guarantors, the "Subsidiary Guarantors") to the extent set forth in
the Indentures.




Crompton Corporation
January 18, 2005
Page 2

         This opinion is being delivered in accordance with the requirements of
Item 601(b)(5) of Regulation S-K under the Securities Act of 1933, as amended
(the "Act").

         In connection with this opinion, we have examined originals or copies,
certified or otherwise identified to our satisfaction, of:

         (i) the Registration Statement on Form S-4 with respect to the Exchange
         Notes and the Subsidiary Guarantees, filed with the Securities and
         Exchange Commission (the "Commission") on October 8, 2004 under the
         Act, and Amendment No. 1 thereto filed on December 3, 2004, Amendment
         No. 2 thereto filed on December 27, 2004, and Amendment No. 3 thereto
         to be filed on the date hereof (as so amended, the "Registration
         Statement");

         (ii)  an executed copy of the Registration Rights Agreement;

         (iii) an executed copy of each of the Indentures;

         (iv) (a) the Certificate of Incorporation of the Company, as certified
         by the Secretary of State of Delaware, and (b) the By-laws of the
         Company, as amended to date;



Crompton Corporation
January 18, 2005
Page 3

         (v) (a) the Certificate of Incorporation, and (b) the By-laws of each
         of the Delaware Guarantors;

         (vi) certain resolutions adopted by the the Board of Directors of the
         Company, relating to the issuance of the Original Notes and the
         Exchange Notes, the Indentures and related matters, as certified by the
         Secretary of the Company;

         (vii) certain resolutions adopted by the Boards of Directors, of each
         of the Delaware Guarantors relating to the Exchange Offer, the
         Indentures, and the Subsidiary Guarantees to be executed by the
         Delaware Guarantors (the "Delaware Guarantees") and related matters, as
         certified by the Secretary or Assistant Secretary, as applicable of
         each the Delaware Guarantors;

         (viii) the Forms T-1 of the Trustee filed as an exhibit to the
         Registration Statement with respect to each of the Indentures;

         (ix) the forms of the Exchange Notes; and

         (x) the forms of the Subsidiary Guarantees.

         We have also examined originals or copies, certified or otherwise
identified to our satisfaction, of such records of the Company and the Delaware
Guarantors and such agreements, certificates of public officials, certificates
of officers or other representatives of the Company, the Delaware Guarantors and
others, and such other documents, certificates and records as we have deemed
necessary or appropriate as a basis for the opinions set forth herein.

         In our examination, we have assumed the legal capacity of all natural
persons, the genuineness of all signatures, the authenticity of all documents
submitted to us as originals, the conformity to original documents of all
documents submitted to us as certified, conformed or photostatic copies and the
authenticity of the originals of such latter documents. In making our
examination of executed documents or documents to be executed, we have assumed
that the parties thereto, other than the Company and the Delaware Guarantors,
had or will have the power, corporate or other, to enter into and perform all
obligations thereunder and have also assumed the due authorization by all
requisite action, corporate or other, and execution and delivery by such parties
of such documents, and except as to the Delaware Guarantors with respect to the
Delaware Guarantees, the validity and binding effect on such parties. We note
that Uniroyal Chemical Company Limited (Delaware), one of the Delaware
Guarantors, is incorporated in both the State of Delaware and under the laws of
the Bahamas, and has been domesticated in the State of Delaware, and our opinion
set forth below with respect to Uniroyal Chemical Company Limited (Delaware) is
limited to its status under the laws of the State of Delaware. As to any facts
material to the opinions expressed herein which we have not independently
established or verified, we have relied upon statements and representations of
officers and other representatives of the Company, the Delaware Guarantors and
others.



Crompton Corporation
January 18, 2005
Page 4


         Our opinion set forth herein is limited to Delaware corporate law and
those laws of the State of New York that are normally applicable to transactions
of the type contemplated by the Exchange Offer and, to the extent that judicial
or regulatory orders or decrees or consents, approvals, licenses,
authorizations, validations, filings, recordings or registrations with
governmental authorities are relevant, to those required under such laws (all of
the foregoing being referred to as "Opined on Law"). We do not express any
opinion with respect to the law of any jurisdiction other than Opined on Law or
as to the effect of any such non-opined on law on the opinion herein stated. The
opinion expressed herein is based on laws in effect on the date hereof, which
laws are subject to change with possible retroactive effect.

         Based upon and subject to the foregoing and the limitations,
qualifications, exceptions and assumptions set forth herein, we are of the
opinion that when the Exchange Notes and the Subsidiary Guarantees (in the forms
examined by us) have been duly executed and authenticated in accordance with the
terms of the Indentures and have been delivered upon consummation of the
Exchange Offer against receipt of Original Notes and the related guarantees
surrendered in exchange therefor in accordance with the terms of the Exchange
Offer, the Exchange Notes and the Delaware Guarantees will constitute valid
and binding obligations of the Company and each of the Delaware Guarantors,
respectively, enforceable against the Company and each of the Delaware
Guarantors, respectively, in accordance with their terms, except to the extent
that enforcement thereof may be limited by (1) bankruptcy, insolvency,
reorganization, moratorium, fraudulent conveyance or other similar laws now or
hereafter in effect relating to creditors' rights generally and (2) general
principles of equity (regardless of whether enforceability is considered in a
proceeding at law or in equity).

         In rendering the opinion set forth above, we have assumed that the
execution and delivery by the Company and the Delaware Guarantors of the
Indentures, the Exchange Notes and the Delaware Guarantees and the performance
by the Company and the Delaware Guarantors of their obligations thereunder do
not and will not violate, conflict with or constitute a default under any
agreement or instrument to which the Company or the Delaware Guarantors or their
properties are subject, except for those agreements and instruments which have
been identified to us by the Company and the Delaware Guarantors as being
material to it and which are listed in Part II of the Registration Statement.



Crompton Corporation
January 18, 2005
Page 5

         We hereby consent to the filing of this opinion with the Commission as
an exhibit to the Registration Statement. We also consent to the reference to
our firm under the caption "Legal Matters" in the Registration Statement. In
giving this consent, we do not thereby admit that we are included in the
category of persons whose consent is required under Section 7 of the Act or the
rules and regulations of the Commission.

                                Very truly yours,


                               /s/  SKADDEN, ARPS, SLATE, MEAGHER & FLOM LLP








                                   SCHEDULE I
                         DELAWARE SUBSIDIARY GUARANTORS

          Crompton Colors Incorporated
          Crompton Europe Financial Services Company
          Crompton Holding Corporation
          Davis-Standard Corporation
          Uniroyal Chemical Company Limited (Delaware)
          Uniroyal Chemical Company, Inc.
          Uniroyal Chemical Export Limited
          Uniroyal Chemical Leasing Company, Inc.





                                      SI -1






                                   SCHEDULE II
                                  NON-DELAWARE
                              SUBSIDIARY GUARANTORS

          CNK Chemical Realty Corporation
          Crompton Monochem, Inc.
          GT Seed Treatment Inc.
          Kem Manufacturing Corporation
          Monochem, Inc.
          Naugatuck Treatment Company
          Crompton Manufacturing Company, Inc.
          Weber City Road LLC