Dimethyl Methylphosphonate (DMMP)
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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
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Import Tips & Compliance
• 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
Related Products under Tariff item 2931.41.00
99% Pure DMMP Flame Retardant Grade
High-purity (99%) dimethyl methylphosphonate (DMMP) is a non-halogenated organo-phosphorus compound used primarily as a flame retardant precursor for polyurethane foams and textiles. Its chemical structure, CH3PO(OCH3)2, contains phosphorus directly linked to carbon, placing it squarely within heading 29.31 as an organo-inorganic compound. The product is a separate chemically defined organic compound, meeting the scope of Chapter 29.
DMMP for Polyurethane Foam Production
This specialty grade of dimethyl methylphosphonate is optimized for reactive flame retardancy in flexible polyurethane foams. It is a pure non-halogenated organo-phosphorus compound, chemically identical to standard DMMP, and therefore classified under tariff item 2931.41.00. The product's specific application does not alter its chemical classification under Chapter 29.
Industrial DMMP Chemical Intermediate
Industrial bulk dimethyl methylphosphonate is used as a phosphorylating agent in pharmaceutical synthesis and pesticide production. As a non-halogenated organo-phosphorus compound with a defined chemical structure, it is classified under tariff item 2931.41.00. The product is a separate chemically defined organic compound within the scope of Chapter 29.
Laboratory Grade Dimethyl Methylphosphonate
Laboratory grade dimethyl methylphosphonate is a high-assay chemical supplied in small quantities for research and analytical applications. As a separate chemically defined non-halogenated organo-phosphorus compound, it falls under tariff item 2931.41.00. The product is used in NMR spectroscopy and other analytical techniques, but its chemical identity determines its classification.