2903.89.31.00/Lindane Gamma Isomer/Mexico

Lindane Gamma Isomer from Mexico

Lindane is the pure gamma isomer of hexachlorocyclohexane (HCH), a chlorinated cyclanic derivative. Classifies under HTS 2903.89.31.00 despite six chlorines, as it's chlorinated-only substitution. Used in pharmaceutical scabicides.

Duty Rate — Mexico → United States

15.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

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Import Tips

• Specify gamma isomer (>99%) to distinguish from technical HCH mixtures

• Include FDA drug master file for pharmaceutical grade specifications

• Comply with veterinary drug residue limits for animal treatment imports