Toluene Sulfonic Acid Monohydrate from Mexico
P-toluenesulfonic acid monohydrate (CAS 6190-39-2) is a strong organic acid from sulfonation of toluene, containing only sulfo groups on phenolic ring. Used as catalyst in esterification; HTS 2908.99.1500 for this defined compound.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Specify crystal water content (1.5-2%); REACH Annex XVII compliant packaging
• Pitfall: Anhydrous vs monohydrate affects declared weight - provide KF titration