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 reports appearing in this Quarterly Report on Form 10-Q of Union Carbide Corporation for the quarter ended March 31, 2011.

/s/ B. THOMAS FLORENCE

B. Thomas Florence

President

Analysis, Research & Planning Corporation

May 2, 2011

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