Brazil NCM · 8-digit subitem

NCM 2820.90.30 – Trimanganese tetraoxide

NCM 2820.90.30 (also written 28209030) is Brazil's code for trimanganese tetraoxide. Its first 6 digits are HS code 2820.90.

Official description of NCM 2820.90.30

PortuguêsOfficial
Tetraóxido de trimanganês (óxido salino de manganês)
EnglishUnofficial translation

Trimanganese tetraoxide (saline manganese oxide)

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

How to read NCM 2820.90.30

28Chapter 20Heading 90Subheading

HS code 2820.90
Same in every country

3Item 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 28.20 Manganese oxides Óxidos de manganês.
  3. Subheading 2820.90 Manganese oxides; excluding manganese dioxide Outros
  4. Subitem 2820.90.30 Trimanganese tetraoxide (saline manganese oxide) Tetraóxido de trimanganês (óxido salino de manganês)

Other NCM codes under HS 2820.90

2820.90.10 Manganous oxideÓxido manganoso 2820.90.20 Dimanganese trioxide (manganese sesquioxide)Trióxido de dimanganês (sesquióxido de manganês) 2820.90.40 Dimanganese heptaoxide (permanganic anhydride)Heptaóxido de dimanganês (anidrido permangânico)

Questions about NCM 2820.90.30

What is NCM 2820.90.30?

NCM 2820.90.30 (28209030) is the Brazilian (Mercosur) code for trimanganese tetraoxide. Its official Portuguese description is “Tetraóxido de trimanganês (óxido salino de manganês)”.

What is the HS code for NCM 2820.90.30?

HS 2820.90 (Manganese oxides; excluding manganese dioxide). 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 2820.90.30?

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.