Brazil NCM · 8-digit subitem

NCM 2931.59.91 – O-Alkyl(≤C10) alkyl(C1-C3)phosphonofluoridates

NCM 2931.59.91 (also written 29315991) is Brazil's code for o-Alkyl(≤C10) alkyl(C1-C3)phosphonofluoridates. Its first 6 digits are HS code 2931.59.

Official description of NCM 2931.59.91

PortuguêsOfficial
Alquil(de C1 a C3)fosfonofluoridatos de O-alquila (de até C10, incluindo os cicloalquila)
EnglishUnofficial translation

O-Alkyl (up to C10, including cycloalkyl) alkyl(C1 to C3)phosphonofluoridates

Nomenclatura Comum do Mercosul (Siscomex). Updated Oct 2026 · In force since Apr 2022 (Res Gecex 272/2021).

How to read NCM 2931.59.91

29Chapter 31Heading 59Subheading

HS code 2931.59
Same in every country

9Item 1Subitem

Added by Mercosur
Brazil, Argentina, Paraguay, Uruguay

The first 6 digits are the international HS code, so their meaning is the same in every country; Brazil publishes the text in Portuguese. Digits 7 and 8 are Brazil's own split of that HS code. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 29 Organic chemicals Produtos químicos orgânicos.
  2. Heading 29.31 Other organo-inorganic compounds Outros compostos organo-inorgânicos.
  3. Group 2931.5 Halogenated organo-phosphorous derivatives: Derivados organofosforados halogenados:
  4. Subheading 2931.59 Halogenated organo-phosphorous derivatives; other halogenated organo-phosphorous derivatives, n.e.c. in item no. 2931.5 Outros
  5. Item 2931.59.9 Other Outros
  6. Subitem 2931.59.91 O-Alkyl (up to C10, including cycloalkyl) alkyl(C1 to C3)phosphonofluoridates Alquil(de C1 a C3)fosfonofluoridatos de O-alquila (de até C10, incluindo os cicloalquila)

Other NCM codes under HS 2931.59

2931.59.11 Clodronic acid and its disodium saltÁcido clodrônico e seu sal dissódico 2931.59.12 EthephonEtefon 2931.59.13 FotemustineFotemustina 2931.59.92 O-Isopropyl methylphosphonochloridateMetilfosfonocloridato de O-isopropila 2931.59.93 O-Pinacolyl methylphosphonochloridateMetilfosfonocloridato de O-pinacolila 2931.59.94 Alkyl(C1-C3)phosphonyl difluoridesDifluoreto de alquilfosfonila, com grupo alquila de C1 a C3 2931.59.95 Dialkylaminoalkylidene phosphonamidofluoridatesFosfonamidofluoridatos de P-alquila (de até C10, incluindo cicloalquila) N-(1-(dialquila (de até C10, incluindo cicloalquila)amino))alquilideno (H ou de até C10, incluindo cicloalquila) e sais alquilados ou protonados destes produtos 2931.59.96 Bis(diethylamino)methylene phosphonamidofluoridate(Bis(dietilamina)metileno)fosfonamidofluoridato de metila 2931.59.98 Halogenated P-(C1-C3)alkyl, no other P-C bondOutros compostos que contenham um átomo de fósforo ligado a um grupo alquila (de C1 a C3) mas sem outros átomos de carbono 2931.59.99 Other halogenated organophosphorus derivativesOutros

Questions about NCM 2931.59.91

What is NCM 2931.59.91?

NCM 2931.59.91 (29315991) is the Brazilian (Mercosur) code for o-Alkyl(≤C10) alkyl(C1-C3)phosphonofluoridates. Its official Portuguese description is “Alquil(de C₁ a C₃)fosfonofluoridatos de O-alquila (de até C₁₀, incluindo os cicloalquila)”.

What is the HS code for NCM 2931.59.91?

HS 2931.59 (Halogenated organo-phosphorous derivatives; other halogenated organo-phosphorous derivatives, n.e.c. in item no. 2931.5). The first 6 digits of an NCM code are its international HS code; the last 2 digits are Brazil's own split.

Is an NCM code the same as an HS code?

The first 6 digits are the same in every country. NCM adds an item digit (7th) and a subitem digit (8th). A code ending in 00 means Brazil does not split that HS code further.

Which countries use NCM 2931.59.91?

All Mercosur members use the same NCM codes: Argentina, Brazil, Paraguay and Uruguay.

Source: Siscomex Classif NCM table, updated Oct 2026 (Resolução Gecex nº 926/2026). The Portuguese text is the official one; the English is our translation.