p-Toluenesulfonic Acid from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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