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Modified Diphenylmethane Diisocyanate (Modified MDI) from Mexico

Modified MDI features altered functionality for coatings and adhesives, still a core isocyanate per chapter notes. It is classified in HTS 2929.10.55.00 as a product described in U.S. note 3 to section VI.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Submit modification specs to CBP for binding ruling; ensure REACH-like certifications

Common issue: undervaluation due to modifications