Desmodur H Diisocyanate from Japan
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 — 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
• 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