Brazil NCM · 8-digit subitem

NCM 2821.10.20 – Magnetic iron oxide, 93% Fe3O4 or more

NCM 2821.10.20 (also written 28211020) is Brazil's code for magnetic iron oxide, 93% Fe3O4 or more. Its first 6 digits are HS code 2821.10.

Official description of NCM 2821.10.20

PortuguêsOfficial
Óxido ferroso-férrico (óxido magnético de ferro), com um teor de Fe3O4 igual ou superior a 93 %, em peso
EnglishUnofficial translation

Ferrous-ferric oxide (magnetic iron oxide), with an Fe3O4 content of 93% or more by weight

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

How to read NCM 2821.10.20

28Chapter 21Heading 10Subheading

HS code 2821.10
Same in every country

2Item 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 28.21 Iron oxides and hydroxides; earth colours containing 70% or more by weight of combined iron evaluated as Fe2o3 Óxidos e hidróxidos de ferro; terras corantes que contenham, em peso, 70 % ou mais de ferro combinado, expresso em Fe2O3.
  3. Subheading 2821.10 Iron oxides and hydroxides Óxidos e hidróxidos de ferro
  4. Subitem 2821.10.20 Ferrous-ferric oxide (magnetic iron oxide), with an Fe3O4 content of 93% or more by weight Óxido ferroso-férrico (óxido magnético de ferro), com um teor de Fe3O4 igual ou superior a 93 %, em peso

Other NCM codes under HS 2821.10

2821.10.11 Ferric oxide, 85% Fe2O3 or moreCom um teor de Fe2O3 igual ou superior a 85 %, em peso 2821.10.19 Other ferric oxideOutros 2821.10.30 Iron hydroxidesHidróxidos de ferro 2821.10.90 Other iron oxidesOutros

Questions about NCM 2821.10.20

What is NCM 2821.10.20?

NCM 2821.10.20 (28211020) is the Brazilian (Mercosur) code for magnetic iron oxide, 93% Fe3O4 or more. Its official Portuguese description is “Óxido ferroso-férrico (óxido magnético de ferro), com um teor de Fe₃O₄ igual ou superior a 93 %, em peso”.

What is the HS code for NCM 2821.10.20?

HS 2821.10 (Iron oxides and hydroxides). 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 2821.10.20?

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.