<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS RESTATED SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
UNION CARBIDE CORPORATION'S FORMS 10-Q FOR THE QUARTERS ENDED MARCH 31, 1997,
JUNE 30, 1997 AND SEPTEMBER 30, 1997, AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<CIK> 0000100790
<NAME> UNION CARBIDE CORPORATION
<MULTIPLIER> 1,000,000
       
                                                                       
<PERIOD-TYPE>                   9-MOS                   6-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             JAN-01-1997             JAN-01-1997
<PERIOD-END>                               SEP-30-1997             JUN-30-1997             MAR-31-1997
<CASH>                                             132                     115                     214
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                     1064                    1079                    1082
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                        556                     544                     553
<CURRENT-ASSETS>                                  1954                    1923                    2028
<PP&E>                                            7577                    7424                    7274
<DEPRECIATION>                                    3886                    3855                    3809
<TOTAL-ASSETS>                                    6975                    6770                    6795
<CURRENT-LIABILITIES>                             1306                    1131                    1221
<BONDS>                                           1459                    1467                    1494
<PREFERRED-MANDATORY>                              138                     140                     140
<PREFERRED>                                          0                       0                       0
<COMMON>                                           155                     155                     155
<OTHER-SE>                                        2063                    2053                    1972
<TOTAL-LIABILITY-AND-EQUITY>                      6975                    6770                    6795
<SALES>                                           4963                    3304                    1638
<TOTAL-REVENUES>                                  4963                    3304                    1638
<CGS>                                             3650                    2451                    1231
<TOTAL-COSTS>                                     3650                    2451                    1231
<OTHER-EXPENSES>                                   374<F1>                 250<F3>                 122<F4>
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                  57                      38                      19
<INCOME-PRETAX>                                    772                     500                     228
<INCOME-TAX>                                       228                     145                      66
<INCOME-CONTINUING>                                529                     348                     157
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                       529                     348                     157
<EPS-PRIMARY>                                     3.97<F2>                2.63<F2>                1.17<F2>
<EPS-DILUTED>                                     3.49<F2>                2.31<F2>                1.03<F2>
<FN>
<F1>OTHER EXPENSES FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1997 ARE EQUAL TO
RESEARCH AND DEVELOPMENT OF 118 AND DEPRECIATION AND AMORTIZATION OF 256.
<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".
<F3>OTHER EXPENSES FOR THE SIX MONTHS ENDED JUNE 30, 1997 ARE EQUAL TO
RESEARCH AND DEVELOPMENT OF 81 AND DEPRECIATION AND AMORTIZATION OF 169.
<F4>OTHER EXPENSES FOR THE THREE MONTHS ENDED MARCH 31, 1997 ARE EQUAL TO
RESEARCH AND DEVELOPMENT OF 40 AND DEPRECIATION AND AMORTIZATION OF 82.
</FN>