2-Sulfoethanol from Mexico
2-Sulfoethanol (isethionic acid) is a sulfonated ethanol derivative used in surfactant production and as a pharmaceutical intermediate. Classified under HTS 2905.59.90.00 as 'other' sulfonated acyclic alcohol per Chapter 29 note 4, despite potential soap-like applications. The sulfonic acid remains covalently bound.
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
• pH and acid value testing confirms sulfonic acid vs neutralized salt form
• Corrosive liquid UN 3265 classification requires specific overpack requirements
• Pure compound status verified against Chapter 29 note 1(g) addition prohibitions