EXHIBIT 3.11 CERTIFICATE OF AMENDMENT TO CERTIFICATE OF FORMATION OF HUNTSMAN ICI CHEMICALS LLC Pursuant to Section 18-202 of the Delaware Limited Liability Company Act 1. The name of the limited liability company is Huntsman ICI Chemicals LLC (the "Company"). ------- 2. The Certificate of Formation is hereby amended to change the name of the Company to Huntsman International LLC. 3. Accordingly, Article 1 of the Certificate of Formation shall, as amended, read as follows: "1. The name of the limited liability company is Huntsman International LLC." IN WITNESS WHEREOF, the undersigned authorized person has executed this Certificate of Amendment this 7/th/ day of December 2000. HUNTSMAN ICI CHEMICALS LLC By: \s\ Samuel D. Scruggs ----------------------------- Name: Samuel D. Scruggs Its: Authorized Person