Dibutyl Phosphite from China
Dibutyl phosphite (BuO)2P(O)H is a reactive organophosphorus compound used in flame retardants and pesticides. HTS 2931.49.00 covers it as non-halogenated organo-phosphorus derivative. Contains P-C bond through butyl chains and P-H functionality.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Classify as UN 3082 Environmentally Hazardous Substance for ocean transport
• Confirm P-H bond via FTIR spectrum to distinguish from dibutyl phosphate
• EPA pre-manufacture notice may apply for first-time US imports