Exhibit 21

LYONDELL CHEMICAL COMPANY

SUBSIDIARIES

Name	Type of Entity	Jurisdiction
ARCO Chemical Properties, L.P.	limited partnership	Delaware
ARCO Chemical Technology, Inc.	holding corporation	Delaware
ARCO Chemical Technology, L.P.	limited partnership	Delaware
ARCO Chemical Technology Management, Inc.	holding corporation	Delaware
Equistar Chemicals, LP	limited partnership	Delaware
Eurogen C.V.	limited partnership	Netherlands
Lyondell Asia Pacific, Ltd.	corporation	Delaware
Lyondell-Bayer Manufacturing Maasvlakte VOF	general partnership	Netherlands
Lyondell Bayport, LLC	limited liability	Delaware
Lyondell Centennial Corp.	corporation	Delaware
Lyondell Chemical Canada Inc.	corporation	Canada
Lyondell Chemical Central Europe Ges.m.b.H.	corporation	Austria
Lyondell Chemical Delaware Company	holding corporation	Delaware
Lyondell Chemical (Deutschland) GmbH	corporation	Germany
Lyondell Chemical Espana Co.	corporation	Delaware
Lyondell Chemical Europe, Inc.	corporation	Delaware
Lyondell Chemical Holding Company	corporation	Delaware
Lyondell Chemical International Company	corporation	Delaware
Lyondell Chemical Italia S.r.L.	corporation	Italy
Lyondell Chemical Overseas Services, Inc.	corporation	Delaware
Lyondell Chemical Pan America, Inc.	corporation	Delaware
Lyondell Chemical Products Europe, Inc.	corporation	Delaware
Lyondell Chemical Wilmington, Inc.	corporation	Delaware
Lyondell Chemie International B.V.	limited liability	Netherlands
Lyondell Chemie Investment Nederland B.V.	limited liability	Netherlands
Lyondell Chemie Nederland B.V.	limited liability	Netherlands
Lyondell Chemical Nederland, Ltd.	corporation	Delaware
Lyondell Chemie (PO11) B.V.	limited liability	Netherlands
Lyondell Chemie (POSM) B.V.	limited liability	Netherlands
Lyondell Chemie Technologie Nederland B.V.	limited liability	Netherlands
Lyondell Chemie Utilities B.V.	limited liability	Netherlands
Lyondell Chimie France Corporation	corporation	Delaware
Lyondell Chimie France SNC	partnership	France
Lyondell Chimie TDI SCA	corporation	France
LYONDELL-CITGO Refining LP	limited partnership	Delaware
Lyondell-DNT Limited Partnership	limited partnership	Delaware
Lyondell Funding, LLC	limited liability	Delaware
Lyondell Funding II, LLC	limited liability	Delaware
Lyondell France, Inc.	corporation	Delaware
Lyondell General Methanol Company	corporation	Delaware
Lyondell Greater China, Ltd.	corporation	Delaware
Lyondell Intermediate Holding Company	corporation	Delaware
Lyondell Japan, Inc.	corporation	Japan
Lyondell Limited Methanol Company	corporation	Delaware
Lyondell (Pelican) Petrochemical L.P.1, Inc.	corporation	Delaware
Lyondell (Pelican) Petrochemical L.P.2, Inc.	corporation	Delaware
Lyondell Methanol Company, L.P.	limited partnership	Delaware
Lyondell Petrochemical G.P. Inc.	corporation	Delaware
Lyondell Petrochemical L.P. Inc.	corporation	Delaware

Exhibit 21

LYONDELL CHEMICAL COMPANY

SUBSIDIARIES

(Continued)

Name	Type of Entity	Jurisdiction
Lyondell PO11 C.V.	limited partnership	Netherlands
Lyondell POJVLP1, LLC	limited liability	Delaware
Lyondell POJVLP2, LLC	limited liability	Delaware
Lyondell POJVLP3, LLC	limited liability	Delaware
Lyondell POJVGP, LLC	limited liability	Delaware
Lyondell POTechLP, Inc.	holding corporation	Delaware
Lyondell POTechGP, Inc.	holding corporation	Delaware
Lyondell Quimica do Brasil, Ltda.	corporation	Brazil
Lyondell Refining GP, LLC	limited liability	Delaware
Lyondell Refining LP, LLC	limited liability	Delaware
Lyondell Refining Partners, LP	limited partnership	Delaware
Lyondell Refining Company	holding corporation	Delaware
Lyondell LP3 GP, LLC	limited liability	Delaware
Lyondell LP3 Partners, LP	limited partnership	Delaware
Lyondell POJV Partner 1 GP, LLC	limited liability	Delaware
Lyondell POJV Partners 1, LP	limited partnership	Delaware
Lyondell POJV Partner 2 GP, LLC	limited liability	Delaware
Lyondell POJV Partners 2, LP	limited partnership	Delaware
Lyondell POJV Partner 3 GP, LLC	limited liability	Delaware
Lyondell POJV Partners 3, LP	limited partnership	Delaware
Lyondell South Asia PTE Ltd.	corporation	Singapore
Lyondell Thailand, Ltd.	corporation	Delaware
Nihon Oxirane Co., Ltd.	corporation	Japan
POSM Delaware, Inc.	holding corporation	Delaware
PO Offtake, LP	limited partnership	Delaware
PO JV, LP	limited partnership	Delaware
POSM II Limited Partnership, L.P.	limited partnership	Delaware
POSM II Properties Partnership, L.P.	limited partnership	Delaware
Seinehaven BDO2 C.V.	limited partnership	Netherlands
Steamelec B.V.	limited liability	Netherlands
Technology JV, LP	limited partnership	Delaware
Lyondell-Equistar Holdings Partners	joint venture	Delaware
Novolen Technology Holdings C.V.	limited partnership	Netherlands