Desmodur H Diisocyanate from Canada
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 — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
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