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              EXHIBIT 23.2 - CONSENT OF INDEPENDENT AUDITORS





We consent to the reference to our firm under the captions "Experts," Summary
Historical and Pro Forma Consolidated Financial Data of OSCA" and "Selected
Historical Financial Data of OSCA" and to the use of our report dated
February 21, 2001, in the Amended Registration Statement on Form S-4 and
related Prospectus of OSCA, Inc. for the registration of 7,900,000 shares of
its Class B common stock.


                                                /s/ Ernst & Young LLP


Indianapolis, Indiana
December 17, 2001