Crude MDI from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, 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