Brazil NCM · 8-digit subitem

NCM 2921.11.32 – Trimethylamine hydrochloride

NCM 2921.11.32 (also written 29211132) is Brazil's code for trimethylamine hydrochloride. Its first 6 digits are HS code 2921.11.

Official description of NCM 2921.11.32

PortuguêsOfficial
Cloridrato de trimetilamina
EnglishUnofficial translation

Trimethylamine hydrochloride

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

How to read NCM 2921.11.32

29Chapter 21Heading 11Subheading

HS code 2921.11
Same in every country

3Item 2Subitem

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 29.21 Amine-function compounds Compostos de função amina.
  3. Group 2921.1 Acyclic monoamines and their derivatives; salts thereof: Monoaminas acíclicas e seus derivados; sais destes produtos:
  4. Subheading 2921.11 Amine-function compounds; acyclic monoamines and their derivatives, methylamine, di- or trimethylamine and their salts Mono-, di- ou trimetilamina e seus sais
  5. Item 2921.11.3 Trimethylamine and its salts Trimetilamina e seus sais
  6. Subitem 2921.11.32 Trimethylamine hydrochloride Cloridrato de trimetilamina

Other NCM codes under HS 2921.11

2921.11.11 MonomethylamineMonometilamina 2921.11.12 Monomethylamine saltsSais 2921.11.21 DimethylamineDimetilamina 2921.11.22 Dimethylamine 2,4-dichlorophenoxyacetate2,4-Diclorofenoxiacetato de dimetilamina 2921.11.23 Dimethylamine methylchlorophenoxyacetateMetilclorofenoxiacetato de dimetilamina 2921.11.29 Other dimethylamine saltsOutros 2921.11.31 TrimethylamineTrimetilamina 2921.11.39 Other trimethylamine saltsOutros

Questions about NCM 2921.11.32

What is NCM 2921.11.32?

NCM 2921.11.32 (29211132) is the Brazilian (Mercosur) code for trimethylamine hydrochloride. Its official Portuguese description is “Cloridrato de trimetilamina”.

What is the HS code for NCM 2921.11.32?

HS 2921.11 (Amine-function compounds; acyclic monoamines and their derivatives, methylamine, di- or trimethylamine and their salts). 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 2921.11.32?

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.