Brazil NCM · 8-digit code

NCM 2921.22.00 – Hexamethylenediamine and its salts

NCM 2921.22.00 (also written 29212200) is Brazil's code for hexamethylenediamine and its salts. Its first 6 digits are HS code 2921.22.

Official description of NCM 2921.22.00

PortuguêsOfficial
Hexametilenodiamina e seus sais
EnglishUnofficial translation

Amine-function compounds; acyclic polyamines and their derivatives, hexamethylenediamine and its salts

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

How to read NCM 2921.22.00

29Chapter 21Heading 22Subheading

HS code 2921.22
Same in every country

0Item 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. The last two digits are 00 because Brazil does not split this HS code further. 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 2921.2 Acyclic polyamines and their derivatives; salts thereof: Poliaminas acíclicas e seus derivados; sais destes produtos:
  4. Subheading 2921.22 Amine-function compounds; acyclic polyamines and their derivatives, hexamethylenediamine and its salts
  5. Subitem 2921.22.00 Amine-function compounds; acyclic polyamines and their derivatives, hexamethylenediamine and its salts Hexametilenodiamina e seus sais

Questions about NCM 2921.22.00

What is NCM 2921.22.00?

NCM 2921.22.00 (29212200) is the Brazilian (Mercosur) code for hexamethylenediamine and its salts. Its official Portuguese description is “Hexametilenodiamina e seus sais”.

What is the HS code for NCM 2921.22.00?

HS 2921.22 (Amine-function compounds; acyclic polyamines and their derivatives, hexamethylenediamine and its 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 2921.22.00?

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.