Brazil NCM · 8-digit subitem

NCM 2933.69.21 – N,N,N-Trihydroxyethylhexahydrotriazine

NCM 2933.69.21 (also written 29336921) is Brazil's code for n,N,N-Trihydroxyethylhexahydrotriazine. Its first 6 digits are HS code 2933.69.

Official description of NCM 2933.69.21

PortuguêsOfficial
N,N,N-Triidroxietilexaidrotriazina
EnglishUnofficial translation

N,N,N-Trihydroxyethylhexahydrotriazine

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

How to read NCM 2933.69.21

29Chapter 33Heading 69Subheading

HS code 2933.69
Same in every country

2Item 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 29.33 Heterocyclic compounds with nitrogen hetero-atom(s) only Compostos heterocíclicos exclusivamente de heteroátomo(s) de nitrogênio (azoto).
  3. Group 2933.6 Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: Compostos cuja estrutura contém um ciclo triazina (hidrogenado ou não) não condensado:
  4. Subheading 2933.69 Heterocyclic compounds; containing an unfused triazine ring (whether or not hydrogenated) in the structure, others excluding melamine Outros
  5. Item 2933.69.2 Containing oxygen functions, but not covalently bonded chlorine, in the structure Cuja estrutura contém funções oxigenadas, mas não contém cloro em ligação covalente
  6. Subitem 2933.69.21 N,N,N-Trihydroxyethylhexahydrotriazine N,N,N-Triidroxietilexaidrotriazina

Other NCM codes under HS 2933.69

2933.69.11 Cyanuric chloride (2,4,6-trichlorotriazine)2,4,6-Triclorotriazina (cloreto cianúrico) 2933.69.12 MercaptodichlorotriazineMercaptodiclorotriazina 2933.69.13 AtrazineAtrazina 2933.69.14 SimazineSimazina 2933.69.15 CyanazineCianazina 2933.69.16 AnilazineAnilazina 2933.69.19 Other chlorinated triazine compoundsOutros 2933.69.22 HexazinoneHexazinona 2933.69.23 MetribuzinMetribuzim 2933.69.29 Other chlorine-free oxygen-function triazinesOutros 2933.69.91 AmetrynAmetrina 2933.69.92 Methenamine and its saltsMetenamina e seus sais 2933.69.99 Other unfused triazine ring compoundsOutros

Questions about NCM 2933.69.21

What is NCM 2933.69.21?

NCM 2933.69.21 (29336921) is the Brazilian (Mercosur) code for n,N,N-Trihydroxyethylhexahydrotriazine. Its official Portuguese description is “N,N,N-Triidroxietilexaidrotriazina”.

What is the HS code for NCM 2933.69.21?

HS 2933.69 (Heterocyclic compounds; containing an unfused triazine ring (whether or not hydrogenated) in the structure, others excluding melamine). 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 2933.69.21?

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.