DOPO Derivative 3,9-Dimethylspiro Phosphonate from Canada
A DOPO-based derivative, this compound is precisely 3,9-dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide, used in flame-retardant synthesis for electronics. Classified in HTS 2931.48.00.00 as a non-halogenated organo-phosphorus compound per Chapter 29 definitions.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include synthesis pathway documentation to prove P-C linkage and non-halogen status
• Check for anti-dusting agents under Chapter 29 note (g) limits
• Partner with certified labs for pre-shipment testing to avoid delays