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2929.10.80.90/Naphthalene Diisocyanate (NDI)/China

Naphthalene Diisocyanate (NDI) from China

Naphthalene-1,5-diisocyanate (NDI) features two -NCO groups on a naphthalene backbone, falling under HTS 2929.10.80.90 as other isocyanates with nitrogen function. Applied in crystalline polyurethanes for engineering plastics.

Duty Rate — China → United States

19%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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Import Tips

• Hazard Class 6.1 solid UN 3077; specify low moisture content (<0.1%) to prevent trimerization

• FTIR spectroscopy verification needed for characteristic NCO peak at 2270 cm⁻¹

Naphthalene Diisocyanate (NDI) from China — Import Duty Rate | HTS 2929.10.80.90