Dimethyl Methylphosphonate (DMMP)
Dimethyl methylphosphonate (DMMP) is a non-halogenated organo-phosphorus compound with the chemical formula CH3PO(OCH3)2, classified under HTS 2931.41.00.00 as a specific organo-inorganic derivative. It is a colorless liquid used primarily as a flame retardant additive and chemical intermediate.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing trace halogens or classified as other organo-phosphorus derivatives
Products with minor halogen content fall under the broader non-halogenated organo-phosphorus provisions later in numerical order.
If when imported as a formulated mixture or solution for retail/industrial use
Mixtures exceeding simple solutions per Chapter 29 note (e) shift to prepared chemical preparations, not pure compounds.
If structurally reclassified as certain alcohol derivatives during synthesis
Some phosphorus-containing esters may align with Chapter 29 alcohol headings if not primarily organo-inorganic by function.
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Import Tips & Compliance
• Verify purity levels (>98%) via certificate of analysis to confirm classification; ensure proper chemical labeling per DOT and EPA regulations; avoid misclassification as pesticide intermediates which require FIFRA registration
Related Products under HTS 2931.41.00.00
99% Pure DMMP Flame Retardant Grade
High-purity (99%) dimethyl methylphosphonate is a key flame retardant precursor for polyurethane foams and textiles, fitting HTS 2931.41.00.00 due to its specific organo-phosphorus structure without halogens. It serves as a stable, low-toxicity intermediate in polymer manufacturing.
Industrial DMMP Chemical Intermediate
Dimethyl methylphosphonate in industrial bulk packaging is used as a phosphorylating agent in pharmaceutical synthesis and pesticides, precisely matching HTS 2931.41.00.00 for non-halogenated organo-phosphorus compounds. Its role as a building block ensures classification as a separate chemically defined compound.
DMMP for Polyurethane Foam Production
Specialty dimethyl methylphosphonate grade optimized for reactive flame retardancy in flexible polyurethane foams, classified under HTS 2931.41.00.00 as it remains a pure non-halogenated organo-phosphorus derivative. It reacts during foam polymerization without altering its chemical identity.
Laboratory Grade Dimethyl Methylphosphonate
High-assay DMMP for research and analytical labs, supplied in small quantities, falls under HTS 2931.41.00.00 as a chemically defined non-halogenated organo-phosphorus compound per Chapter 29 scope. Used in NMR spectroscopy and synthetic organic chemistry.