Endosulfan Isomer Mixture from Mexico
Endosulfan consists of alpha and beta isomers, chlorinated derivatives of cyclanic hydrocarbons used as insecticides. Classified under HTS 2903.89.31.00 for its chlorinated cyclodiene structure without other halogens. Restricted due to environmental persistence concerns.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify compliance with international bans; many countries prohibit endosulfan imports
• Include GC-MS analysis confirming isomer ratio and absence of other halogens
• Declare as technical material, not formulated product, to avoid Chapter 38 reclassification