Brazil NCM · 8-digit subitem

NCM 2923.90.10 – Betaine and its salts

NCM 2923.90.10 (also written 29239010) is Brazil's code for betaine and its salts. Its first 6 digits are HS code 2923.90.

Official description of NCM 2923.90.10

PortuguêsOfficial
Betaína e seus sais
EnglishUnofficial translation

Betaine and its salts

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

How to read NCM 2923.90.10

29Chapter 23Heading 90Subheading

HS code 2923.90
Same in every country

1Item 0Subitem

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 29.23 Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined Sais e hidróxidos de amônio quaternários; lecitinas e outros fosfoaminolipídios, de constituição química definida ou não.
  3. Subheading 2923.90 Quaternary ammonium salts and hydroxides; whether or not chemically defined n.e.c. in heading no. 2923 Outros
  4. Subitem 2923.90.10 Betaine and its salts Betaína e seus sais

Other NCM codes under HS 2923.90

2923.90.20 Choline derivativesDerivados da colina 2923.90.30 3-Chloro-2-hydroxypropyltrimethylammonium chlorideCloreto de 3-cloro-2-hidroxipropiltrimetilamônio 2923.90.40 C6-C22 alkyltrimethylammonium halidesHalogenetos de alquil-trimetilamônio, com grupo alquila de C6 a C22 2923.90.50 C6-C22 dialkyldimethyl- or benzalkonium halidesHalogenetos de dialquil-dimetilamônio ou de alquil-benzil-dimetilamônio, com grupo alquila de C6 a C22 2923.90.60 C6-C22 pentamethylalkylpropylenediammonium halidesHalogenetos de pentametil-alquil-propilenodiamônio, com grupo alquila de C6 a C22 2923.90.90 Other quaternary ammonium salts and hydroxidesOutros

Questions about NCM 2923.90.10

What is NCM 2923.90.10?

NCM 2923.90.10 (29239010) is the Brazilian (Mercosur) code for betaine and its salts. Its official Portuguese description is “Betaína e seus sais”.

What is the HS code for NCM 2923.90.10?

HS 2923.90 (Quaternary ammonium salts and hydroxides; whether or not chemically defined n.e.c. in heading no. 2923). 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 2923.90.10?

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.