Camphorsulfonic Acid from Mexico
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 — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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