Brazil NCM · 8-digit subitem

NCM 2902.90.40 – alpha-Methylstyrene

NCM 2902.90.40 (also written 29029040) is Brazil's code for alpha-Methylstyrene. Its first 6 digits are HS code 2902.90.

Official description of NCM 2902.90.40

PortuguêsOfficial
alfa-Metilestireno
EnglishUnofficial translation

alpha-Methylstyrene

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

How to read NCM 2902.90.40

29Chapter 02Heading 90Subheading

HS code 2902.90
Same in every country

4Item 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 29.02 Cyclic hydrocarbons Hidrocarbonetos cíclicos.
  3. Subheading 2902.90 Cyclic hydrocarbons; n.e.c. in heading no. 2902 Outros
  4. Subitem 2902.90.40 alpha-Methylstyrene alfa-Metilestireno

Other NCM codes under HS 2902.90

2902.90.10 Diphenyl (1,1'-biphenyl)Difenila (1,1'-bifenila) 2902.90.20 NaphthaleneNaftaleno 2902.90.30 AnthraceneAntraceno 2902.90.90 Other cyclic hydrocarbonsOutros

Questions about NCM 2902.90.40

What is NCM 2902.90.40?

NCM 2902.90.40 (29029040) is the Brazilian (Mercosur) code for alpha-Methylstyrene. Its official Portuguese description is “alfa-Metilestireno”.

What is the HS code for NCM 2902.90.40?

HS 2902.90 (Cyclic hydrocarbons; n.e.c. in heading no. 2902). 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 2902.90.40?

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.