Brazil NCM · 8-digit code

NCM 3812.31.00 – TMQ (trimethyldihydroquinoline) oligomer mixtures

NCM 3812.31.00 (also written 38123100) is Brazil's code for tMQ (trimethyldihydroquinoline) oligomer mixtures. Its first 6 digits are HS code 3812.31.

Official description of NCM 3812.31.00

PortuguêsOfficial
Misturas de oligômeros de 2,2,4-trimetil-1,2-di-hidroquinolina (TMQ)
EnglishUnofficial translation

Anti-oxidising preparations and other compound stabilisers; for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)

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

How to read NCM 3812.31.00

38Chapter 12Heading 31Subheading

HS code 3812.31
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 38.12 Prepared rubber accelerators; compound plasticisers for rubber or plastics, n.e.c. or included; anti-oxidising preparations and other compound stabilisers for rubber or plastics Preparações denominadas "aceleradores de vulcanização"; plastificantes compostos para borracha ou plástico, não especificados nem compreendidos noutras posições; preparações antioxidantes e outros estabilizadores compostos, para borracha ou plástico.
  3. Group 3812.3 Anti-oxidising preparations and other compound stabilisers for rubber or plastics: Preparações antioxidantes e outros estabilizadores compostos, para borracha ou plástico:
  4. Subheading 3812.31 Anti-oxidising preparations and other compound stabilisers; for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
  5. Subitem 3812.31.00 Anti-oxidising preparations and other compound stabilisers; for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) Misturas de oligômeros de 2,2,4-trimetil-1,2-di-hidroquinolina (TMQ)

Questions about NCM 3812.31.00

What is NCM 3812.31.00?

NCM 3812.31.00 (38123100) is the Brazilian (Mercosur) code for tMQ (trimethyldihydroquinoline) oligomer mixtures. Its official Portuguese description is “Misturas de oligômeros de 2,2,4-trimetil-1,2-di-hidroquinolina (TMQ)”.

What is the HS code for NCM 3812.31.00?

HS 3812.31 (Anti-oxidising preparations and other compound stabilisers; for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)). 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 3812.31.00?

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.