<ARTICLE> 5 <CIK> 0001081158 <NAME> EQUISTAR CHEMICALS LP <MULTIPLIER> 1,000,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> JUN-30-1999 <CASH> 77 <SECURITIES> 0 <RECEIVABLES> 544 <ALLOWANCES> (3) <INVENTORY> 476 <CURRENT-ASSETS> 1,125 <PP&E> 5,903 <DEPRECIATION> (1,873) <TOTAL-ASSETS> 6,602 <CURRENT-LIABILITIES> 532 <BONDS> 2,169 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 3,808 <TOTAL-LIABILITY-AND-EQUITY> 6,602 <SALES> 2,312 <TOTAL-REVENUES> 2,312 <CGS> 2,074 <TOTAL-COSTS> 2,225 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 89 <INCOME-PRETAX> 49 <INCOME-TAX> 0 <INCOME-CONTINUING> 49 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 49 <EPS-BASIC> 0 <EPS-DILUTED> 0