Trimethylindium from Mexico
Trimethylindium (InMe3) is an organoindium precursor for III-V semiconductors with In-C bonds defining 2931.90.90 classification. Pyrophoric liquid excluded from inorganic indium (Ch28) by chapter organo-inorganic notes.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• UN3058 Pyrophoric solid packaging; nitrogen-padded containers mandatory
• ITAR/EAR export control verification for semiconductor end-use
• Extremely air-sensitive; import permits may specify direct cleanroom delivery