Trimethyl Bismuth from Canada
Trimethyl bismuth (Bi(CH3)3) is a volatile organobismuth compound with bismuth-carbon bonds, used in MOCVD semiconductor manufacturing. Classified under 2931.90.90 as other organo-inorganic compounds per chapter notes defining heading 2931 for metal-carbon linkages. Excluded from organosulfur (2930) or heterocyclic categories.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide CVD process end-use documentation; may qualify for duty-free research exemptions under HTSUS
• Flammable solid—requires DOT SP 188 or UN-approved packaging with proper hazard class labeling
• Check REACH compliance if transshipping through EU; bismuth compounds increasingly scrutinized