Brazil NCM · 8-digit code

NCM 2845.10.00 – Heavy water (deuterium oxide)

NCM 2845.10.00 (also written 28451000) is Brazil's code for heavy water (deuterium oxide). Its first 6 digits are HS code 2845.10.

Official description of NCM 2845.10.00

PortuguêsOfficial
Água pesada (óxido de deutério)
EnglishUnofficial translation

Heavy water (deuterium oxide)

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

How to read NCM 2845.10.00

28Chapter 45Heading 10Subheading

HS code 2845.10
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 28.45 Isotopes other than those of heading no. 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined Isótopos não incluídos na posição 28.44; seus compostos, inorgânicos ou orgânicos, de constituição química definida ou não.
  3. Subheading 2845.10 Heavy water (deuterium oxide)
  4. Subitem 2845.10.00 Heavy water (deuterium oxide) Água pesada (óxido de deutério)

Questions about NCM 2845.10.00

What is NCM 2845.10.00?

NCM 2845.10.00 (28451000) is the Brazilian (Mercosur) code for heavy water (deuterium oxide). Its official Portuguese description is “Água pesada (óxido de deutério)”.

What is the HS code for NCM 2845.10.00?

HS 2845.10 (Heavy water (deuterium oxide)). 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 2845.10.00?

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.