Ethylphosphonyl Difluoride
Ethylphosphonyl difluoride (C2H5P(O)F2) is an organo-inorganic compound featuring an ethyl alkyl chain attached to phosphorus with difluoride groups. Classified under HTS 2931.59.00.15 as it precisely matches the 'alkyl phosphonyl difluorides' specification for ethyl variants in halogenated organo-phosphorus derivatives. Used in pesticide synthesis and as a reagent in phosphorus chemistry.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If n-propyl or isopropyl isomer
Same subheading but statistical suffix differentiates longer chain alkyl phosphonyl difluorides from methyl/ethyl.
If for metal phosphonyl derivatives
Chapter Note 5(C)(3) classifies coordination compounds with metals in later numerical headings.
If pre-formulated as pesticide intermediate
Goods of pesticide chapters exclude Chapter 29 if containing > specified impurities or additives for specific use.
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Import Tips & Compliance
• Declare exact CAS number (430-64-8) and concentration; impurities may trigger reclassification under Chapter notes
• Obtain prior DEA/CWC approvals; Schedule 2 chemical requiring end-user certificates for import
• Use fluoropolymer-lined containers to prevent hydrolysis during shipping, common pitfall leading to customs holds
Related Products under HTS 2931.59.00.15
Methylphosphonyl Difluoride
Methylphosphonyl difluoride (CH3P(O)F2) is a halogenated organo-phosphorus compound where a methyl group is directly linked to phosphorus with two fluorine atoms. It falls under HTS 2931.59.00.15 as an alkyl phosphonyl difluoride, specifically the methyl variant, meeting Chapter 29 requirements for separate chemically defined organo-inorganic compounds with halogen directly linked to phosphorus. Primarily used as a chemical intermediate in organophosphorus synthesis.
Isopropylphosphonyl Difluoride
Isopropylphosphonyl difluoride ((CH3)2CHP(O)F2) contains a branched isopropyl group linked to the phosphonyl difluoride moiety. It qualifies for HTS 2931.59.00.15 as one of the explicitly named isopropyl alkyl phosphonyl difluorides in halogenated organo-phosphorus compounds. Critical precursor in nerve agent synthesis and specialty fluorophosphorus chemicals.
n-Propylphosphonyl Difluoride
n-Propylphosphonyl difluoride (CH3CH2CH2P(O)F2) features a straight-chain propyl group on the P(O)F2 structure. Falls squarely under HTS 2931.59.00.15 as the n-propyl variant of alkyl phosphonyl difluorides in the halogenated organo-phosphorus category. Employed in flame retardant precursor synthesis.
Methylphosphonyl Difluoride Stabilized Solution
Stabilized methylphosphonyl difluoride solution contains CH3P(O)F2 with added anticaking agent for safe transport. Permitted under HTS 2931.59.00.15 per Chapter Note (f) as the stabilizer is solely for preservation, maintaining classification as the pure chemically defined compound. Used in controlled laboratory reagent applications.
Ethylphosphonyl Difluoride 98% Technical Grade
Technical grade ethylphosphonyl difluoride at 98% purity with minor impurities typical of industrial production. Remains classified under HTS 2931.59.00.15 as Chapter 29(a) covers compounds 'whether or not containing impurities.' Essential for large-scale agrochemical manufacturing.