Phenyltrichlorosilane from Mexico
Phenyltrichlorosilane (CAS 98-13-5) is the chemical (C6H5)SiCl3, explicitly named in HTS 2931.90.0500 as an aromatic organo-inorganic compound with silicon-carbon bonding. Used primarily for producing phenyl-functional silicones, silane coupling agents, and high-temperature silicone fluids.
Duty Rate — Mexico → United States
10%
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
• Classify as UN 2437 corrosive liquid; ensure DOT/ADR-compliant drums with proper labeling
• Submit Certificate of Analysis confirming single compound status per Chapter 29 note (a)
• Avoid common pitfall of misdeclaring purity levels affecting duty-free chemical status