Brazil NCM · 8-digit subitem

NCM 2834.21.10 – Potassium nitrate, 98% KNO3 or less

NCM 2834.21.10 (also written 28342110) is Brazil's code for potassium nitrate, 98% KNO3 or less. Its first 6 digits are HS code 2834.21.

Official description of NCM 2834.21.10

PortuguêsOfficial
Com um teor de KNO3 inferior ou igual a 98 %, em peso
EnglishUnofficial translation

With a KNO3 content of 98% or less by weight

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

How to read NCM 2834.21.10

28Chapter 34Heading 21Subheading

HS code 2834.21
Same in every country

1Item 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 28.34 Nitrites; nitrates Nitritos; nitratos.
  3. Group 2834.2 Nitrates: Nitratos:
  4. Subheading 2834.21 Nitrates; of potassium De potássio
  5. Subitem 2834.21.10 With a KNO3 content of 98% or less by weight Com um teor de KNO3 inferior ou igual a 98 %, em peso

Other NCM codes under HS 2834.21

2834.21.90 Other potassium nitrateOutros

Questions about NCM 2834.21.10

What is NCM 2834.21.10?

NCM 2834.21.10 (28342110) is the Brazilian (Mercosur) code for potassium nitrate, 98% KNO3 or less. Its official Portuguese description is “Com um teor de KNO₃ inferior ou igual a 98 %, em peso”.

What is the HS code for NCM 2834.21.10?

HS 2834.21 (Nitrates; of potassium). 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 2834.21.10?

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.