Camphorsulfonic Acid from Canada
10-Camphorsulfonic acid derives from sulfonation of camphor (bicyclic hydrocarbon terpene). Classified HTS 2904.99.50.00 as sulfonated cyclic hydrocarbon derivative. Chiral resolving agent in asymmetric synthesis.
Duty Rate — Canada → United States
13.7%
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 optical rotation [α]D values to confirm enantiomeric purity affecting pricing
• Small package exemption possible for research quantities <100g
• Biocontamination testing required for terpene-derived chemicals