Brazil NCM · 8-digit subitem

NCM 3817.00.20 – Mixed alkylnaphthalenes

NCM 3817.00.20 (also written 38170020) is Brazil's code for mixed alkylnaphthalenes. Its first 6 digits are HS code 3817.00.

Official description of NCM 3817.00.20

PortuguêsOfficial
Misturas de alquilnaftalenos
EnglishUnofficial translation

Mixed alkylnaphthalenes

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

How to read NCM 3817.00.20

38Chapter 17Heading 00Subheading

HS code 3817.00
Same in every country

2Item 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 38 Chemical products n.e.c. Produtos diversos das indústrias químicas.
  2. Heading 38.17 Mixed alkylbenzenes and mixed alkylnaphthalenes, other than those of heading no. 2707 or 2902 Misturas de alquilbenzenos ou de alquilnaftalenos, exceto as das posições 27.07 ou 29.02.
  3. Subheading 3817.00 Mixed alkylbenzenes and mixed alkylnaphthalenes, other than those of heading no. 2707 or 2902 Misturas de alquilbenzenos ou de alquilnaftalenos, exceto as das posições 27.07 ou 29.02.
  4. Subitem 3817.00.20 Mixed alkylnaphthalenes Misturas de alquilnaftalenos

Other NCM codes under HS 3817.00

3817.00.10 Mixed alkylbenzenesMisturas de alquilbenzenos

Questions about NCM 3817.00.20

What is NCM 3817.00.20?

NCM 3817.00.20 (38170020) is the Brazilian (Mercosur) code for mixed alkylnaphthalenes. Its official Portuguese description is “Misturas de alquilnaftalenos”.

What is the HS code for NCM 3817.00.20?

HS 3817.00 (Mixed alkylbenzenes and mixed alkylnaphthalenes, other than those of heading no. 2707 or 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 3817.00.20?

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.