Toluene Sulfonic Acid Monohydrate from Canada
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 — Canada → United States
15.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify crystal water content (1.5-2%); REACH Annex XVII compliant packaging
• Pitfall: Anhydrous vs monohydrate affects declared weight - provide KF titration