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%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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