EXHIBIT 3(i)(c)


CERTIFICATE OF CHANGE OF LOCATION OF REGISTERED OFFICE
AND OF REGISTERED AGENT

It is hereby certified that:

1. The name of the corporation (hereinafter called the
"corporation") is CROMPTON CORPORATION

2. The registered office of the corporation within the
State of Delaware is hereby changed to 1013 Centre Road,
City of Wilmington 19805, County of New Castle.

3. The registered agent of the corporation within the
State of Delaware is hereby changed to Corporation Service
Company, the business office of which is identical with the
registered office of the corporation as hereby changed.

4. The corporation has authorized the changes hereinbefore
set forth by resolution of its Board of Directors.

Signed on 5/18/00

                                /s/Barry J. Shainman
                                   Barry J. Shainman
                                   Secretary