Brazil NCM · 8-digit code

NCM 2839.11.00 – Sodium metasilicates

NCM 2839.11.00 (also written 28391100) is Brazil's code for sodium metasilicates. Its first 6 digits are HS code 2839.11.

Official description of NCM 2839.11.00

PortuguêsOfficial
Metassilicatos
EnglishUnofficial translation

Silicates; sodium metasilicates

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

How to read NCM 2839.11.00

28Chapter 39Heading 11Subheading

HS code 2839.11
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 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 28.39 Silicates; commercial alkali metal silicates Silicatos; silicatos dos metais alcalinos comerciais.
  3. Group 2839.1 Of sodium: De sódio:
  4. Subheading 2839.11 Silicates; sodium metasilicates
  5. Subitem 2839.11.00 Silicates; sodium metasilicates Metassilicatos

Questions about NCM 2839.11.00

What is NCM 2839.11.00?

NCM 2839.11.00 (28391100) is the Brazilian (Mercosur) code for sodium metasilicates. Its official Portuguese description is “Metassilicatos”.

What is the HS code for NCM 2839.11.00?

HS 2839.11 (Silicates; sodium metasilicates). 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 2839.11.00?

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.