3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester Technical
Technical grade of this named phosphinate ester used as glyphosate herbicide intermediate and polymer flame retardant monomer. HTS 2931.90.70.00 specifically identifies this exact chemical structure.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as organo-sulfur contaminant present
Organo-sulfur takes precedence but must be principal characteristic
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Import Tips & Compliance
• Glyphosate producers require chiral purity certificates if enantiopure form imported
• Flammable solid precautions despite liquid appearance; flash point documentation needed
• EPA pesticide chemical code assignment required even for intermediates
Related Products under HTS 2931.90.70.00
N,N'-Bis(trimethylsilyl) Urea
N,N'-Bis(trimethylsilyl) urea is a chemically defined organo-silicon compound containing silicon atoms directly linked to carbon, used primarily as a silylating agent in organic synthesis and as a reagent in pharmaceutical manufacturing. It falls under HTS 2931.90.70.00 as one of the specifically named organo-inorganic compounds in this statistical suffix.
3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester
This organo-phosphorus compound, also known as HPPA hydroxyethyl ester, features phosphorus directly bonded to carbon and is used as a phosphonate intermediate in agrochemical synthesis and flame retardants. HTS 2931.90.70.00 specifically lists this compound among named organo-inorganic chemicals per the tariff description.
2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTC)
PBTC is a multifunctional organo-phosphorus chelating agent with phosphorus directly linked to carbon, widely used in water treatment, detergents, and corrosion inhibitors. It is explicitly named in HTS 2931.90.70.00 as a specific organo-inorganic compound, including its various salts.
Sodium Salt of 2-Phosphonobutane-1,2,4-tricarboxylic acid
The tetrasodium salt of PBTC is the most common commercial form, offering better water solubility for cooling water treatment and scale inhibition applications. Classified with parent acid under HTS 2931.90.70.00 per Chapter 29 inorganic salt classification rules.
Ammonium Salt of 2-Phosphonobutane-1,2,4-tricarboxylic acid
Ammonium PBTC salt provides volatility control in certain detergent and cleaning formulations where sodium salts cause residue issues. Falls under HTS 2931.90.70.00 as salt of specifically named organo-inorganic acid.
N,N'-Bis(trimethylsilyl) Urea Technical Grade
Technical grade N,N'-Bis(trimethylsilyl) urea (95%+ purity) serves as silylating reagent for carbohydrate protection in nucleoside synthesis. Specifically enumerated in HTS 2931.90.70.00 distinguishing it from general silanes.