p-Phenylene Diisocyanate (PPDI) from China
p-Phenylene diisocyanate (PPDI), or 1,4-diisocyanatobenzene, contains two isocyanate groups on a benzene ring, classifying under HTS 2929.10.80.90 as other aromatic isocyanates. Used in high-temperature resistant polyurethanes and spandex fibers.
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
Import Tips
• Extremely reactive solid (mp 95°C); classify UN 2787 Hazard Class 6.1 Packing Group II
• Require HPLC purity certificate (>97%) to distinguish from p-phenylenediamine