Crude MDI (Polymeric Methylene Diphenyl Diisocyanate) from Japan
Crude MDI is a primary form polyisocyanate containing 95% or more methylene phenyl isocyanate monomer units by weight, used as a key raw material in polyurethane production. It falls under HTS 3909.31.00.00 as it precisely matches the subheading for poly(methylene phenyl isocyanate) in primary forms within amino-resins. This unprocessed chemical is supplied in drums for industrial formulation.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Verify monomer content exceeds 95% by weight via lab analysis to confirm classification under 3909.31
• Ensure SDS and REACH compliance for hazardous isocyanate handling
• Common pitfall: misclassifying refined MDI as it may shift to other subheadings