Phosphonate Flame Retardant Intermediate 2931.47
A purified batch of (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate used as a key intermediate in synthesizing phosphorus-based flame retardants for textiles. Classified under HTS 2931.47.00.00 due to its non-halogenated organo-phosphorus structure with direct C-P bonds.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as mixture with stabilizers exceeding Chapter 29 purity limits
Prepared chemical mixtures or binders fall in 3824 if additives render it suitable for specific non-general use.
If for simpler aryl phosphite triesters if structurally analogous
Different phosphorus derivatives like phosphites classified separately in 2931.31 based on specific chemical function.
If phosphonic/phosphinic acid character predominates over organo-inorganic
Phosphonic acids and derivatives go to 2919.90 if oxygen-function defines the compound per Chapter notes.
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Import Tips & Compliance
• Include Safety Data Sheet (SDS) and purity certificate (>98%) to substantiate chemical identity for CBP review
• Avoid anti-dusting agents that could trigger reclassification under general chemical mixtures if exceeding Chapter 29 note (g) limits
• Confirm bulk industrial packaging to distinguish from diluted retail preparations excluded by Chapter notes
Related Products under HTS 2931.47.00.00
(5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate
This is a specific non-halogenated organo-phosphorus compound classified under HTS 2931.47.00.00 as it features phosphorus atoms directly linked to carbon in a complex cyclic structure with phosphonate and phosphinan moieties. It falls within Chapter 29 for separate chemically defined organic compounds containing organo-inorganic phosphorus derivatives.
Cyclic Phosphinate Pesticide Precursor
This organo-phosphorus compound, specifically (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate, serves as a precursor for synthesizing cyclic phosphinate-based pesticides. It qualifies for HTS 2931.47.00.00 as a non-halogenated derivative with phosphorus directly bonded to carbon in its dioxaphosphinane ring.
Dioxaphosphinane Phosphonate 98% Technical Grade
Technical grade (98% purity) (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate used in specialty chemical manufacturing. Falls under HTS 2931.47.00.00 as a chemically defined non-halogenated organo-phosphorus compound per Chapter 29 scope.
Organophosphorus Plasticizer Additive Precursor
Specialty chemical (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate used to produce phosphorus-containing plasticizers for PVC applications. Classified in HTS 2931.47.00.00 for its specific non-halogenated organo-inorganic phosphorus structure.