3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester from Japan
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.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include NMR or mass spectrometry data confirming phosphinyl structure to distinguish from sulfonated derivatives excluded from heading 2931
• Classify salts of this acid under same heading per Chapter 29 note 3(C)(1); declare counterion if applicable
• Check REACH compliance for EU transshipments as phosphonate intermediates face registration requirements