Undecylenic Acid from Japan
Undecylenic acid is technically 10-undecenoic acid (unsaturated), but pure saturated undecanoic acid fits here for C11. Used in antimicrobials. Note: primarily unsaturated 2916.14.
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
• Double bond absence confirmation critical (vs 2916)
• Odd-carbon chain rare - synthesis origin docs
• GC purity >99% threshold documentation