Section VI — Products of the chemical or allied industries
Chapter 29 — Organic chemicals
Heading 2931 — Other organoinorganic compounds.
National subdivision 2931.4 — Nonhalogenated organophosphorous derivatives:
Subheading 2931.49 — Other
HS code
2931.49.90 Other
Last Verified Date - 1 October 2026
Common commodities
Non-halogenated trialkyl phosphate solutionOrganic phosphite ester chemicalPhosphonic acid derivative powderAlkyl diphosphonates in liquid formPhosphorothioate organic compoundTrimethyl phosphate laboratory reagentDialkyl hydrogen phosphonate solidsTriaryl phosphate industrial precursorOrganic phosphite salt crystalsAlkylphosphonic acid buffer solution