Dimethyl Methylphosphonate (DMMP) from United States
Dimethyl methylphosphonate (DMMP) is a colorless liquid with the chemical formula CH3PO(OCH3)2, classified as a non-halogenated organo-phosphorus compound. As a separate chemically defined organic compound with phosphorus-carbon bonds, it falls under heading 29.31 and specifically under tariff item 2931.41.00. It is used in various industrial applications including as a flame retardant and chemical intermediate.
Duty Rate — United States → Canada
Import Tips
• Classify the product under 2931.41.00 and ensure the commercial invoice clearly describes the product as 'dimethyl methylphosphonate' with its CAS number
• Check if the product falls under Canada's Export and Import Permits Act or chemical weapons convention declarations, as DMMP is a Schedule 2 chemical
• Keep records of the product's purity and origin to support the tariff classification if questioned by CBSA