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EXHIBIT 23

Analysis, Research & Planning Corporation's Consent

Union Carbide Corporation:

        Analysis, Research & Planning Corporation ("ARPC") hereby consents to the use of ARPC's name and the reference to ARPC's report dated January 9, 2003, appearing in this Quarterly Report on Form 10-Q of Union Carbide Corporation for the quarter ended March 31, 2003.

/s/  B. THOMAS FLORENCE B. Thomas Florence
President
Analysis, Research & Planning Corporation
April 23, 2003

103

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EXHIBIT 23

Analysis, Research & Planning Corporation's Consent