Methyl Tert-Butyl Ether (MTBE) from Mexico
MTBE is an acyclic ether produced from methanol (monohydric alcohol) and isobutylene, widely used as a gasoline oxygenate additive. Classified under HTS 2909.19.18.00 as 'other' ethers of monohydric alcohols, this chemically defined compound complies with Chapter 29 notes for acyclic ethers. It is not halogenated, sulfonated, or otherwise modified.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6094.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Comply with EPA fuel additive registration and obtain TSCA pre-manufacture notice if required
• Use DOT-approved containers for flammable liquids with proper placarding for transport
• Include certificate of analysis confirming MTBE purity >99% to maintain chemical classification