Brazil NCM · 8-digit subitem

NCM 2918.29.21 – p-Hydroxybenzoic acid

NCM 2918.29.21 (also written 29182921) is Brazil's code for p-Hydroxybenzoic acid. Its first 6 digits are HS code 2918.29.

Official description of NCM 2918.29.21

PortuguêsOfficial
Ácido p-hidroxibenzoico
EnglishUnofficial translation

p-Hydroxybenzoic acid

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

How to read NCM 2918.29.21

29Chapter 18Heading 29Subheading

HS code 2918.29
Same in every country

2Item 1Subitem

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 29.18 Acids; carboxylic acid with additional oxygen function and their anhydrides, halides, peroxides, peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives Ácidos carboxílicos que contenham funções oxigenadas suplementares e seus anidridos, halogenetos, peróxidos e peroxiácidos; seus derivados halogenados, sulfonados, nitrados ou nitrosados.
  3. Group 2918.2 Carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Ácidos carboxílicos de função fenol, mas sem outra função oxigenada, seus anidridos, halogenetos, peróxidos, peroxiácidos e seus derivados:
  4. Subheading 2918.29 Acids; carboxylic acids, (with phenol function but without other oxygen function), their anhydrides, halides, peroxides, peroxyacids and their derivatives, n.e.c. in item no. 2918.2 Outros
  5. Item 2918.29.2 p-Hydroxybenzoic acid, its salts and esters Ácido p-hidroxibenzoico, seus sais e seus ésteres
  6. Subitem 2918.29.21 p-Hydroxybenzoic acid Ácido p-hidroxibenzoico

Other NCM codes under HS 2918.29

2918.29.10 Hydroxynaphthoic acidsÁcidos hidroxinaftoicos 2918.29.22 MethylparabenMetilparabeno 2918.29.23 PropylparabenPropilparabeno 2918.29.29 Other p-hydroxybenzoic acid salts and estersOutros 2918.29.30 Gallic acid, its salts and estersÁcido gálico, seus sais e seus ésteres 2918.29.40 Pentaerythrityl tetrakis(hydroxyphenylpropionate)Tetrakis(3-(3,5-di-ter-butil-4-hidroxifenil)propionato) de pentaeritritila 2918.29.50 Octadecyl di-tert-butylhydroxyphenylpropionate3-(3,5-Di-ter-butil-4-hidroxifenil)propionato de octadecila 2918.29.90 Other phenol-function carboxylic acidsOutros

Questions about NCM 2918.29.21

What is NCM 2918.29.21?

NCM 2918.29.21 (29182921) is the Brazilian (Mercosur) code for p-Hydroxybenzoic acid. Its official Portuguese description is “Ácido p-hidroxibenzoico”.

What is the HS code for NCM 2918.29.21?

HS 2918.29 (Acids; carboxylic acids, (with phenol function but without other oxygen function), their anhydrides, halides, peroxides, peroxyacids and their derivatives, n.e.c. in item no. 2918.2). 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 2918.29.21?

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.