Brazil NCM · 8-digit code

NCM 3902.20.00 – Polyisobutylene

NCM 3902.20.00 (also written 39022000) is Brazil's code for polyisobutylene. Its first 6 digits are HS code 3902.20.

Official description of NCM 3902.20.00

PortuguêsOfficial
Poli-isobutileno
EnglishUnofficial translation

Propylene, other olefin polymers; polyisobutylene in primary forms

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

How to read NCM 3902.20.00

39Chapter 02Heading 20Subheading

HS code 3902.20
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 39 Plastics and articles thereof Plástico e suas obras.
  2. Heading 39.02 Polymers of propylene or of other olefins, in primary forms Polímeros de propileno ou de outras olefinas, em formas primárias.
  3. Subheading 3902.20 Propylene, other olefin polymers; polyisobutylene in primary forms
  4. Subitem 3902.20.00 Propylene, other olefin polymers; polyisobutylene in primary forms Poli-isobutileno

Questions about NCM 3902.20.00

What is NCM 3902.20.00?

NCM 3902.20.00 (39022000) is the Brazilian (Mercosur) code for polyisobutylene. Its official Portuguese description is “Poli-isobutileno”.

What is the HS code for NCM 3902.20.00?

HS 3902.20 (Propylene, other olefin polymers; polyisobutylene in primary forms). 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 3902.20.00?

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.