Brazil NCM · 8-digit subitem

NCM 2804.29.90 – Rare gases other than argon or liquid helium

NCM 2804.29.90 (also written 28042990) is Brazil's code for rare gases other than argon or liquid helium. Its first 6 digits are HS code 2804.29.

Official description of NCM 2804.29.90

PortuguêsOfficial
Outros
EnglishUnofficial translation

Other

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

How to read NCM 2804.29.90

28Chapter 04Heading 29Subheading

HS code 2804.29
Same in every country

9Item 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 28 Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes Produtos químicos inorgânicos; compostos inorgânicos ou orgânicos de metais preciosos, de elementos radioativos, de metais das terras raras ou de isótopos.
  2. Heading 28.04 Hydrogen, rare gases and other non-metals Hidrogênio, gases raros e outros elementos não metálicos.
  3. Group 2804.2 Rare gases: Gases raros:
  4. Subheading 2804.29 Gases, rare; other than argon Outros
  5. Subitem 2804.29.90 Other Outros

Other NCM codes under HS 2804.29

2804.29.10 Liquid heliumHélio líquido

Questions about NCM 2804.29.90

What is NCM 2804.29.90?

NCM 2804.29.90 (28042990) is the Brazilian (Mercosur) code for rare gases other than argon or liquid helium. Its official Portuguese description is “Outros”.

What is the HS code for NCM 2804.29.90?

HS 2804.29 (Gases, rare; other than argon). 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 2804.29.90?

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.