Brazil NCM · 8-digit code

NCM 2922.21.00 – Aminohydroxynaphthalenesulphonic acids and salts

NCM 2922.21.00 (also written 29222100) is Brazil's code for aminohydroxynaphthalenesulphonic acids and salts. Its first 6 digits are HS code 2922.21.

Official description of NCM 2922.21.00

PortuguêsOfficial
Ácidos aminohidroxinaftalenossulfônicos e seus sais
EnglishUnofficial translation

Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function; their ethers and esters; salts thereof, aminohydroxynaphthalenesulphonic acids and their salts

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

How to read NCM 2922.21.00

29Chapter 22Heading 21Subheading

HS code 2922.21
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 29 Organic chemicals Produtos químicos orgânicos.
  2. Heading 29.22 Oxygen-function amino-compounds Compostos aminados de funções oxigenadas.
  3. Group 2922.2 Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof: Aminonaftóis e outros aminofenóis, exceto os que contenham mais de um tipo de função oxigenada, seus éteres e ésteres; sais destes produtos:
  4. Subheading 2922.21 Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function; their ethers and esters; salts thereof, aminohydroxynaphthalenesulphonic acids and their salts
  5. Subitem 2922.21.00 Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function; their ethers and esters; salts thereof, aminohydroxynaphthalenesulphonic acids and their salts Ácidos aminohidroxinaftalenossulfônicos e seus sais

Questions about NCM 2922.21.00

What is NCM 2922.21.00?

NCM 2922.21.00 (29222100) is the Brazilian (Mercosur) code for aminohydroxynaphthalenesulphonic acids and salts. Its official Portuguese description is “Ácidos aminohidroxinaftalenossulfônicos e seus sais”.

What is the HS code for NCM 2922.21.00?

HS 2922.21 (Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function; their ethers and esters; salts thereof, aminohydroxynaphthalenesulphonic acids and their salts). 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 2922.21.00?

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.