Toluene Sulfonic Acid Monohydrate from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, 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