Desmodur H Diisocyanate from Mexico
Desmodur H is the commercial trade name for high-purity 1,6-hexamethylene diisocyanate (HDI) produced by Covestro, stabilized with <0.1% benzoyl chloride for transport. Classed under HTS 2929.10.3500 as the specifically named isocyanate per Chapter 29 notes (f) allowing stabilizers. Used in two-component polyurethane paints for automotive clearcoats.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Declare stabilizer content explicitly; Chapter 29 note (f) permits but requires documentation to avoid reclassification
• Ensure DOT/UN-approved drums (typically 200-250kg net) with proper PGII labeling for toxic inhalation hazard