<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from Union
Carbide Corporation's Form 10-Q for the quarter ended June 30, 1998, and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<CIK> 0000100790
<NAME> UNION CARBIDE CORPORATION
<MULTIPLIER> 1,000,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                              38
<SECURITIES>                                         0
<RECEIVABLES>                                     1002
<ALLOWANCES>                                         0
<INVENTORY>                                        619
<CURRENT-ASSETS>                                  1907
<PP&E>                                            8003
<DEPRECIATION>                                    4061
<TOTAL-ASSETS>                                    7121
<CURRENT-LIABILITIES>                             1315
<BONDS>                                           1705
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           155
<OTHER-SE>                                        2316
<TOTAL-LIABILITY-AND-EQUITY>                      7121
<SALES>                                           3020
<TOTAL-REVENUES>                                  3020
<CGS>                                             2248
<TOTAL-COSTS>                                     2248
<OTHER-EXPENSES>                                   266<F1>
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  56
<INCOME-PRETAX>                                    379
<INCOME-TAX>                                       110
<INCOME-CONTINUING>                                260
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       260
<EPS-PRIMARY>                                     1.91<F2>
<EPS-DILUTED>                                     1.86<F2>
<FN>
<F1>Other expenses are equal to research and development of 73 and depreciation and
amortization of 193.
<F2>The EPS-PRIMARY amount represents basic earnings per share and the EPS-DILUTED
amount represents diluted earnings per share, computed in accordance with
Statement of Financial Accounting Standards No. 128, "Earnings Per Share."
</FN>