Naphthalene Diisocyanate (NDI) from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
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