p-Toluenesulfonic Acid from Mexico
p-Toluenesulfonic acid (PTSA) is a strong organic acid with the formula CH3C6H4SO3H, featuring a sulfonated aromatic hydrocarbon structure (toluene derivative). It falls under HTS 2904.99.47.00 as a sulfonated derivative of an aromatic hydrocarbon, used primarily as a catalyst in esterification and dehydration reactions.
Duty Rate — Mexico → United States
15.5%
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
• Provide detailed chemical composition and purity certificates to verify classification as a sulfonated aromatic derivative
• Ensure proper hazardous material labeling and shipping papers per DOT and IATA regulations for corrosive acids
• Avoid misclassification as a simple sulfonic acid by confirming aromatic hydrocarbon base structure