Monometric 4,4'-MDI (Pure Diphenylmethane-4,4'-Diisocyanate) from Canada
Pure 4,4'-MDI is the monomeric isomer of methylenedi-p-phenylene isocyanate, featuring isocyanate groups specifically at the para positions, falling under HTS 2929.10.80.10. It serves as a building block for high-performance polyurethanes in elastomers and coatings.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include HPLC or GC analysis confirming >98% monomeric 4,4'-MDI content for accurate HTS verification
• Label containers with UN 2489 hazard class and ensure respiratory protection guidelines in import docs
• Avoid bulk shipments without temperature control, as monomeric MDI has lower stability than polymeric forms