Consent of Independent Registered Public Accounting Firm

EX-23 2 dex23.htm CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Consent of Independent Registered Public Accounting Firm

Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-120877) of Lyondell Chemical Company of our report dated June 29, 2006 relating to the financial statements of the Millennium Savings and Investment Plan, which appears in this Form 11-K.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Houston, Texas

June 29, 2006