Bis(2-chloroethyl) Phosphonate from Canada
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 — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
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