1,6-Hexamethylene diisocyanate
Compounds with other nitrogen function: > Isocyanates: > 1,6-Hexamethylene diisocyanate
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 2929.10.35.00
HDI Biuret Trimer (Desmodur N 100)
HDI Biuret trimer is a high-functionality polyisocyanate derived from 1,6-hexamethylene diisocyanate, containing residual monomeric HDI (<0.25%). It qualifies under HTS 2929.10.3500 as an isocyanate per Chapter notes allowing derivatives of listed compounds. Primarily used as crosslinking agent in durable industrial coatings.
1,6-Hexamethylene Diisocyanate (HDI)
1,6-Hexamethylene diisocyanate (HDI) is a chemically defined aliphatic diisocyanate with the formula OCNC6H12NCO, used primarily as a reactive intermediate in polyurethane production. It falls under HTS 2929.10.3500 as an isocyanate compound with other nitrogen function, specifically named in the tariff schedule. This clear, colorless liquid is essential for creating durable coatings and adhesives.
Desmodur H Diisocyanate
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.
Monodisperse HDI (Purified 99.5%)
Laboratory-grade 1,6-hexamethylene diisocyanate with 99.5% purity, minimal isomeric impurities, packaged in 1-5kg quantities for R&D. Falls squarely under HTS 2929.10.3500 as chemically defined isocyanate per Chapter note (a). Used in synthesis of biomedical polyurethanes and adhesives.
HDI Stabilized with 0.02% HDB Catapult
Industrial 1,6-hexamethylene diisocyanate stabilized with proprietary 0.02% HDB Catapult additive to prevent yellowing during storage. HTS 2929.10.3500 applies per Chapter note (f) for added stabilizers necessary for transport. Standard for non-yellowing wood floor coatings.