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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