Methylenedi-p-tolyl Diisocyanate (MDT) from China
Methylenedi-p-tolyl diisocyanate (MDT or DET) contains two p-tolyl isocyanate groups linked by methylene, qualifying under HTS 2929.10.80.90 as other isocyanates. Used in specialty polyurethane elastomers.
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
• Hazard Class 6.1; specify low chlorine content (<100 ppm) for elastomer grade
• NMR spectrum verification for characteristic aromatic and NCO protons
• Avoid bulk packaging; <5L containers preferred for stability