Brazil NCM · 8-digit code

NCM 2512.00.00 – Kieselguhr, diatomite, similar siliceous earths

NCM 2512.00.00 (also written 25120000) is Brazil's code for kieselguhr, diatomite, similar siliceous earths. Its first 6 digits are HS code 2512.00.

Official description of NCM 2512.00.00

PortuguêsOfficial
Farinhas siliciosas fósseis (por exemplo, kieselguhr, tripolita, diatomita) e outras terras siliciosas análogas de densidade aparente não superior a 1, mesmo calcinadas.
EnglishUnofficial translation

Siliceous fossil meals (e.g. kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less

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

How to read NCM 2512.00.00

25Chapter 12Heading 00Subheading

HS code 2512.00
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 25 Salt; sulphur; earths, stone; plastering materials, lime and cement Sal; enxofre; terras e pedras; gesso, cal e cimento.
  2. Heading 25.12 Siliceous fossil meals (e.g. kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less Farinhas siliciosas fósseis (por exemplo, kieselguhr, tripolita, diatomita) e outras terras siliciosas análogas de densidade aparente não superior a 1, mesmo calcinadas.
  3. Subheading 2512.00 Siliceous fossil meals (e.g. kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less
  4. Subitem 2512.00.00 Siliceous fossil meals (e.g. kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less Farinhas siliciosas fósseis (por exemplo, kieselguhr, tripolita, diatomita) e outras terras siliciosas análogas de densidade aparente não superior a 1, mesmo calcinadas.

Questions about NCM 2512.00.00

What is NCM 2512.00.00?

NCM 2512.00.00 (25120000) is the Brazilian (Mercosur) code for kieselguhr, diatomite, similar siliceous earths. Its official Portuguese description is “Farinhas siliciosas fósseis (por exemplo, kieselguhr, tripolita, diatomita) e outras terras siliciosas análogas de densidade aparente não superior a 1, mesmo calcinadas.”.

What is the HS code for NCM 2512.00.00?

HS 2512.00 (Siliceous fossil meals (e.g. kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less). 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 2512.00.00?

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.