Trimethyl Phosphite (TMPi) from Mexico
Trimethyl phosphite, a phosphorous acid ester, serves as a reagent in organic synthesis, antioxidant production, and pesticide manufacturing. HTS 2920.90.51.00 applies to its status as an inorganic nonmetal acid ester. Highly reactive reducing agent.
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
• DOT hazardous material shipping papers mandatory due to pyrophoric tendencies
• Stabilizer addition documentation prevents reclassification as mixture