2,2,4-Trimethylpentane (Isooctane) from Mexico
Isooctane, or 2,2,4-trimethylpentane, is a highly branched saturated acyclic C8 hydrocarbon used as a gasoline octane booster and reference fuel. Falls under HTS 2901.10.5000 as 'other' saturated acyclic hydrocarbons. Supplied with trace stabilizers for transport safety.
Duty Rate — Mexico → United States
10%
Rate breakdown
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
• Include octane number certification; critical for fuel additive verification during customs exam
• Classify as UN1262, PG II; ensure stainless steel or approved plastic containers for compatibility
• Document as chemically defined compound, not mixture, to prevent reclassification to Chapter 27 or 38