Brazil NCM · 8-digit subitem

NCM 2909.19.10 – Methyl tert-butyl ether (MTBE)

NCM 2909.19.10 (also written 29091910) is Brazil's code for methyl tert-butyl ether (MTBE). Its first 6 digits are HS code 2909.19.

Official description of NCM 2909.19.10

PortuguêsOfficial
Éter metil-ter-butílico (MTBE)
EnglishUnofficial translation

Methyl tert-butyl ether (MTBE)

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

How to read NCM 2909.19.10

29Chapter 09Heading 19Subheading

HS code 2909.19
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 29 Organic chemicals Produtos químicos orgânicos.
  2. Heading 29.09 Ethers, ether-alcohols, ether-phenols, ether-alcohol-phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides (chemically defined or not), and their halogenated, sulphonated, nitrated or nitrosated derivatives Éteres, éteres-álcoois, éteres-fenóis, éteres-álcoois-fenóis, peróxidos de álcoois, peróxidos de éteres, peróxidos de acetais e de hemiacetais, peróxidos de cetonas (de constituição química definida ou não), e seus derivados halogenados, sulfonados, nitrados ou nitrosados.
  3. Group 2909.1 Acyclic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives: Éteres acíclicos e seus derivados halogenados, sulfonados, nitrados ou nitrosados:
  4. Subheading 2909.19 Ethers; acyclic, and their halogenated, sulphonated, nitrated or nitrosated derivatives, other than diethyl ether Outros
  5. Subitem 2909.19.10 Methyl tert-butyl ether (MTBE) Éter metil-ter-butílico (MTBE)

Other NCM codes under HS 2909.19

2909.19.20 SevofluraneSevoflurano 2909.19.90 Other acyclic ethersOutros

Questions about NCM 2909.19.10

What is NCM 2909.19.10?

NCM 2909.19.10 (29091910) is the Brazilian (Mercosur) code for methyl tert-butyl ether (MTBE). Its official Portuguese description is “Éter metil-ter-butílico (MTBE)”.

What is the HS code for NCM 2909.19.10?

HS 2909.19 (Ethers; acyclic, and their halogenated, sulphonated, nitrated or nitrosated derivatives, other than diethyl ether). 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 2909.19.10?

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.