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.
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
This product may fall under a more specific subheading:
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Even though the product is marketed for a specific application, classify it as a separate chemically defined compound under 2931.41.00, not as a preparation
• Provide technical data sheets to CBSA demonstrating the product is pure DMMP without additives that would change its classification
• Consider whether the product qualifies for duty relief under customs programs if used in manufacturing in Canada
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.
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.
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.