Chloromethylphosphonic Acid
Chloromethylphosphonic acid serves as an intermediate in organophosphorus chemistry and metal extractants. Classified in HTS 2931.59.00.80 for its halogenated organo-phosphorus structure with P-CH2Cl functionality. Meets Chapter 29 requirements for chemically defined compounds with direct nonmetal linkages to carbon.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered primarily an inorganic phosphonic acid
Inorganic acids of phosphorus are classified in Chapter 28, but organo-derivatives with C-P bonds belong in Chapter 29.
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Import Tips & Compliance
• Declare as a corrosive hazardous material (UN 3265) with appropriate placarding
• Provide synthetic route documentation to verify P-C bond formation
• Monitor for hydrolysis during storage; include stabilizer information if applicable
Related Products under HTS 2931.59.00.80
Tris(2-chloroethyl) Phosphate (TCEP)
Tris(2-chloroethyl) phosphate is a halogenated organo-phosphorus compound used primarily as a flame retardant in plastics, textiles, and polyurethane foams. It falls under HTS 2931.59.00.80 as a halogenated organo-phosphorus derivative that is not specifically enumerated elsewhere in the subheading. The molecule contains phosphorus directly linked to carbon with chlorine halogen substitutions.
Tris(1,3-dichloro-2-propyl) Phosphate (TDCPP)
TDCPP is a chlorinated organophosphate ester used as a flame retardant additive in flexible polyurethane foams for furniture and automotive applications. Classified under HTS 2931.59.00.80 due to its halogenated organo-phosphorus structure with direct P-C bonds. It meets Chapter 29 requirements for separate chemically defined organo-inorganic compounds.
Tris(2-chloroisopropyl) Phosphate (TCPP)
TCPP is a widely used flame retardant reactive additive for rigid polyurethane foams and coatings, featuring three chlorine-substituted isopropyl groups attached to phosphate. It qualifies for HTS 2931.59.00.80 as 'other' halogenated organo-phosphorus derivatives with P-C connectivity. The compound's primary identity remains as a separate chemically defined organic substance per Chapter 29 notes.
2-Chloroethylphosphonic Acid
2-Chloroethylphosphonic acid (etrel) is a plant growth regulator containing both phosphonic acid and chloromethyl functionality. It falls under HTS 2931.59.00.80 as a halogenated organo-phosphorus compound with direct P-C linkage. Used in agriculture to promote fruit ripening and latex flow.
Diethyl Chloromethylphosphonate
Diethyl chloromethylphosphonate is a key intermediate for pesticides and flame retardants, featuring both phosphonate ester and chloromethyl groups. HTS 2931.59.00.80 classification applies due to halogenation on the organo-phosphorus framework. The compound is a separate chemically defined substance per Chapter notes.
Bis(2-chloroethyl) Phosphonate
This compound serves as a reactive flame retardant and chemical intermediate with dual chloroethyl phosphonate functionality. Classified under HTS 2931.59.00.80 as a halogenated organo-phosphorus derivative. Direct P-C linkages distinguish it from simple phosphate esters.