HS code · 6-digit subheading

HS Code 2931.49 – Non-halogenated organo-phosphorous derivatives; other non-halogenated organo-phosphorous derivatives, n.e.c. in item no. 2931.4

HS code 2931.49 is the 6-digit subheading for non-halogenated organo-phosphorous derivatives, other non-halogenated organo-phosphorous derivatives, n.e.c. in item no. 2931.4. It is used for organophosphorus ligands, phosphonate esters (unspecified), phosphine oxides (unspecified), specialty flame retardant precursors and agrochemical intermediates.

What HS 2931.49 covers

HS code 293149 is a 'basket' category for 'other non-halogenated organo-phosphorous derivatives, n.e.c. in item no. 2931.4'. This code captures a diverse range of compounds that do not have their own specific HS classification within the 2931.4 series. These chemicals find applications across various industries, including as intermediates in pharmaceutical synthesis, agrochemicals, flame retardants, plasticizers, and catalysts. Importers and exporters are typically chemical distributors, manufacturers of specialty chemicals, and companies involved in R&D for new materials. The trade volume can be significant due to the broad scope, encompassing both established niche products and newly developed compounds. Key considerations include accurate chemical identification, safety data sheets, and compliance with chemical regulations.

Covers
  • Organophosphorus ligands
  • Phosphonate esters (unspecified)
  • Phosphine oxides (unspecified)
  • Specialty flame retardant precursors
  • Agrochemical intermediates
  • Pharmaceutical building blocks
Examples
  • Sigma-Aldrich (research chemicals)
  • TCI Chemicals
  • Alfa Aesar
  • various generic chemical suppliers
  • custom synthesis houses

Codes often confused with 2931.49

Common mistake. This code is frequently confused with more specific non-halogenated organo-phosphorous derivatives (e.g., 2931.41-2931.48) if a more precise classification exists, or with other organic compounds in Chapter 29 if the organo-phosphorus nature is not fully recognized.

2931.41Non-halogenated organo-phosphorous derivatives; dimethyl methylphosphonate2931.48Non-halogenated organo-phosphorous derivatives; 3,9-dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5] undecane 3,9-dioxide

Top exporters and importers of HS code 293149, 2025

In 2025, the largest exporter of HS code 293149 in UN Comtrade data was China, with 57% of world exports; the largest importer in UN Comtrade data was the United States, with 24% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Top exporters 2025 · share of world exports

  1. 1 China $1.9B
  2. 2 United States $840M
  3. 3 Germany $124M

World total: $3.4B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $723M
  2. 2 Brazil $439M
  3. 3 Argentina $376M

World total: $3.1B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for 2931.49 12

Brazil splits HS 2931.49 into 12 NCM codes, Mercosur's 8-digit tariff lines.

  1. 2931.49.1 Phosphonomethyliminodiacetic acid; aminotrimethylenephosphonic acid; diphenylphosphonate(4,4'-bis((dimethoxyphosphinyl)methyl)diphenyl); disodium etidronate; glyphosate and its monoisopropylamine salt; glufosinate-ammonium; bis(2-ethylhexyl) hydrogen phosphonateÁcido fosfonometiliminodiacético; ácido aminotrimetilenofosfônico; difenilfosfonato(4,4'-bis((dimetoxifosfinil)metil)difenila); etidronato dissódico; glifosato e seu sal de monoisopropilamina; glufosinato de amônio; hidrogenofosfonato de bis(2-etilexilo) Group
  2. 2931.49.11 PMIDA; aminotrimethylenephosphonic acidÁcido fosfonometiliminodiacético; ácido aminotrimetilenofosfônico
  3. 2931.49.12 4,4'-Bis(dimethoxyphosphinylmethyl)diphenylDifenilfosfonato(4,4'-bis((dimetoxifosfinil)metil)difenila)
  4. 2931.49.13 Disodium etidronateEtidronato dissódico
  5. 2931.49.14 Glyphosate and its monoisopropylamine saltGlifosato e seu sal de monoisopropilamina
  6. 2931.49.15 Glufosinate-ammoniumGlufosinato de amônio
  7. 2931.49.16 Bis(2-ethylhexyl) hydrogen phosphonateHidrogenofosfonato de bis(2-etilexilo)
  8. 2931.49.20 O-Dialkyl(C1-C3)aminoethyl alkylphosphonitesHidrogênio alquil(de C1 a C3)fosfonitos de [O-2-(dialquil(de C1 a C3)amino)etila], seus ésteres de O-alquila (de até C10, incluindo os cicloalquila); sais alquilados ou protonados destes produtos
  9. 2931.49.3 Other compounds containing a phosphorus atom bonded to an alkyl group (C₁ to C₃) but no further carbon atomsOutros compostos que contenham um átomo de fósforo ligado a um grupo alquila (de C1 a C3) mas sem outros átomos de carbono Group
  10. 2931.49.31 Butyl methylphosphinateMetilfosfinato de butila
  11. 2931.49.32 Bis(1-methylpentyl) methylphosphonateMetilfosfonato de bis(1-metilpentila)
  12. 2931.49.39 Non-halogenated P-(C1-C3)alkyl, no other P-C bondOutros
  13. 2931.49.40 O-Alkyl N,N-dialkyl(C1-C3)phosphoramidocyanidatesN,N-Dialquil(de C1 a C3)fosforoamidocianidatos de O-alquila (de até C10, incluindo os cicloalquila)
  14. 2931.49.90 Other non-halogenated organophosphorus derivativesOutros

All Brazil NCM codes in heading 29.31 →

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.

Questions about HS 2931.49

What is HS code 293149?

HS code 293149 is a 6-digit subheading in the Harmonized System that covers: Non-halogenated organo-phosphorous derivatives; other non-halogenated organo-phosphorous derivatives, n.e.c. in item no. 2931.4. HS code 293149 is a 'basket' category for 'other non-halogenated organo-phosphorous derivatives, n.e.c. in item no. 2931.4'. This code captures a diverse range of compounds that do not have their own specific HS classification within the 2931.4 series. These chemicals find applications across various industries, including as intermediates in pharmaceutical synthesis, agrochemicals, flame retardants, plasticizers, and catalysts. Importers and exporters are typically chemical distributors, manufacturers of specialty chemicals, and companies involved in R&D for new materials. The trade volume can be significant due to the broad scope, encompassing both established niche products and newly developed compounds. Key considerations include accurate chemical identification, safety data sheets, and compliance with chemical regulations.

What products fall under HS code 293149?

Organophosphorus ligands, phosphonate esters (unspecified), phosphine oxides (unspecified), specialty flame retardant precursors, agrochemical intermediates, pharmaceutical building blocks

What are common misclassifications for HS code 293149?

This code is frequently confused with more specific non-halogenated organo-phosphorous derivatives (e.g., 2931.41-2931.48) if a more precise classification exists, or with other organic compounds in Chapter 29 if the organo-phosphorus nature is not fully recognized.

Which countries are the top exporters of goods under HS code 293149?

In 2025, the top exporters of HS code 293149 in UN Comtrade data were China ($1.9B, 57% of world exports), the United States ($840M) and Germany ($124M). World exports came to about $3.4B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of goods under HS code 293149?

In 2025, the top importers of HS code 293149 in UN Comtrade data were the United States ($723M, 24% of world imports), Brazil ($439M) and Argentina ($376M). World imports came to about $3.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

How is HS code 293149 structured?

HS code 293149 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (31) identify the heading, and digits 5-6 (49) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 293149?

Brazil splits HS code 293149 into 12 NCM codes: 2931.49.11 (PMIDA; aminotrimethylenephosphonic acid), 2931.49.12 (4,4'-Bis(dimethoxyphosphinylmethyl)diphenyl), 2931.49.13 (Disodium etidronate), 2931.49.14 (Glyphosate and its monoisopropylamine salt), 2931.49.15 (Glufosinate-ammonium), 2931.49.16 (Bis(2-ethylhexyl) hydrogen phosphonate), 2931.49.20 (O-Dialkyl(C1-C3)aminoethyl alkylphosphonites), 2931.49.31 (Butyl methylphosphinate), and more listed on this page. The first 6 digits of each match the HS code.