Brazil NCM · 8-digit code

NCM 3811.11.00 – Lead-based anti-knock preparations

NCM 3811.11.00 (also written 38111100) is Brazil's code for lead-based anti-knock preparations. Its first 6 digits are HS code 3811.11.

Official description of NCM 3811.11.00

PortuguêsOfficial
À base de compostos de chumbo
EnglishUnofficial translation

Anti-knock preparations; based on lead compounds

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

How to read NCM 3811.11.00

38Chapter 11Heading 11Subheading

HS code 3811.11
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 38 Chemical products n.e.c. Produtos diversos das indústrias químicas.
  2. Heading 38.11 Anti-knock preparations, oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations and the like, for mineral oils (including gasoline) or other liquids used for the same purposes Preparações antidetonantes, inibidores de oxidação, aditivos peptizantes, beneficiadores de viscosidade, aditivos anticorrosivos e outros aditivos preparados, para óleos minerais (incluindo a gasolina) ou para outros líquidos utilizados para os mesmos fins que os óleos minerais.
  3. Group 3811.1 Anti-knock preparations: Preparações antidetonantes:
  4. Subheading 3811.11 Anti-knock preparations; based on lead compounds
  5. Subitem 3811.11.00 Anti-knock preparations; based on lead compounds À base de compostos de chumbo

Questions about NCM 3811.11.00

What is NCM 3811.11.00?

NCM 3811.11.00 (38111100) is the Brazilian (Mercosur) code for lead-based anti-knock preparations. Its official Portuguese description is “À base de compostos de chumbo”.

What is the HS code for NCM 3811.11.00?

HS 3811.11 (Anti-knock preparations; based on lead compounds). 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 3811.11.00?

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.