Exhibit 10.24.3 FIRST AMENDMENT TO THE UNION CARBIDE CORPORATION BENEFITS PROTECTION TRUST The Union Carbide Corporation Benefits Protections Trust (the "Trust") is hereby amended as follows: 1. Schedule 1 of the Trust is amended by adding the following sentences at the end thereof: "7. The Union Carbide Corporation Compensation Deferral Program (hereinafter, together with all amendments thereto from time to time in effect, referred to as the "Compensation Deferral Program"). 8. The Union Carbide Corporation Excess Long Term Disability Plan (hereinafter, together with all amendments thereto from time to time in effect, referred to as the "Excess LTD Plan")." 2. Schedule 2 of the Trust is amended by adding the following sentences at the end thereof: "7. Compensation Deferral Program. 8. Excess LTD Plan." 3. The amendment set forth herein shall be effective as of January 1, 1994. UNION CARBIDE CORPORATION By: M.A. Kessinger CHEMICAL BANK By: Geoffrey Tripp