Exhibit 23.1 Consent of Independent Auditors The Board of Directors of Union Carbide Corporation We consent to the incorporation by reference in this Registration Statement on Form S-8 of Union Carbide Corporation of our reports on Union Carbide Corporation included and incorporated by reference in the Annual Report on Form 10-K of Union Carbide Corporation for the year ended December 31, 1997. /s/ KPMG LLP Stamford, Connecticut March 8, 1999