Crude MDI from Mexico
Crude MDI contains oligomeric impurities but remains a chemically defined diisocyanate for industrial use. Falls under HTS 2929.10.55.00 per additional U.S. note 3, allowing impurities as per chapter note 1(a).
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Impurity levels must not change principal character; use ISO tanks
• Pitfall: classifying as petrochemical under Chapter 27 if hydrocarbons dominate