Bis(2-chloroethyl) Phosphonate from Mexico
A difunctional chlorophosphonate used in flame retardant polymer synthesis and as a cross-linking agent. Falls under HTS 2931.59.00 as a halogenated organo-phosphorus compound per chapter definitions.
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
• Confirm P-C vs P-O-C bonding via spectroscopic methods
• Store under inert atmosphere to prevent HCl evolution
• Classify distillation fractions separately if purity varies