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2931.90.90.52/Trimethylindium Precursor/Mexico

Trimethylindium Precursor from Mexico

Trimethylindium (TMIn) is a volatile organo-indium compound used in metal-organic chemical vapor deposition (MOCVD) for semiconductor production. Classified under 2931.90.90.52 as an organo-inorganic compound with direct indium-carbon bonds, fitting Chapter 29 definitions excluding sulfonated/halogenated derivatives.

Duty Rate — Mexico → United States

13.7%

Rate breakdown

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

• Ship under UN 3058 as pyrophoric liquid; require specialized hazmat packaging and carrier approvals

• Provide certificates of analysis confirming >99% purity to avoid duty disputes

• Comply with Wassenaar Arrangement export controls for semiconductor precursors

Trimethylindium Precursor from Mexico — Import Duty Rate | HTS 2931.90.90.52