Brazil NCM · 8-digit subitem

NCM 2917.39.20 – Orthophthalic acid and its salts

NCM 2917.39.20 (also written 29173920) is Brazil's code for orthophthalic acid and its salts. Its first 6 digits are HS code 2917.39.

Official description of NCM 2917.39.20

PortuguêsOfficial
Ácido ortoftálico e seus sais
EnglishUnofficial translation

Orthophthalic acid and its salts

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

How to read NCM 2917.39.20

29Chapter 17Heading 39Subheading

HS code 2917.39
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 29 Organic chemicals Produtos químicos orgânicos.
  2. Heading 29.17 Acids; polycarboxylic acids, their anhydrides, halides, peroxides and peroxy-acids; their halogenated, sulphonated, nitrated or nitrosated derivatives Ácidos policarboxílicos, seus anidridos, halogenetos, peróxidos e peroxiácidos; seus derivados halogenados, sulfonados, nitrados ou nitrosados.
  3. Group 2917.3 Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Ácidos policarboxílicos aromáticos, seus anidridos, halogenetos, peróxidos, peroxiácidos e seus derivados:
  4. Subheading 2917.39 Acids; aromatic polycarboxylic acids; n.e.c. in item no. 2917.3 Outros
  5. Subitem 2917.39.20 Orthophthalic acid and its salts Ácido ortoftálico e seus sais

Other NCM codes under HS 2917.39

2917.39.11 Esters of m-phthalic acidÉsteres 2917.39.19 m-Phthalic acid and its saltsOutros 2917.39.31 Dioctyl terephthalateDe dioctila 2917.39.39 Other esters of terephthalic acidOutros 2917.39.40 Trimellitic acid salts and estersSais e ésteres do ácido trimelítico (sais e ésteres do ácido 1,2,4-benzenotricarboxílico) 2917.39.50 Trimellitic anhydrideAnidrido trimelítico (ácido 1,3-dioxo-5-isobenzofuranocarboxílico) 2917.39.90 Other aromatic polycarboxylic acidsOutros

Questions about NCM 2917.39.20

What is NCM 2917.39.20?

NCM 2917.39.20 (29173920) is the Brazilian (Mercosur) code for orthophthalic acid and its salts. Its official Portuguese description is “Ácido ortoftálico e seus sais”.

What is the HS code for NCM 2917.39.20?

HS 2917.39 (Acids; aromatic polycarboxylic acids; n.e.c. in item no. 2917.3). 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 2917.39.20?

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.