Brazil NCM · 8-digit subitem

NCM 2934.20.20 – Benzothiazyl disulphide (MBTS)

NCM 2934.20.20 (also written 29342020) is Brazil's code for benzothiazyl disulphide (MBTS). Its first 6 digits are HS code 2934.20.

Official description of NCM 2934.20.20

PortuguêsOfficial
2,2'-Ditio-bis(benzotiazol) (dissulfeto de benzotiazila)
EnglishUnofficial translation

2,2'-Dithiobis(benzothiazole) (benzothiazyl disulphide)

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

How to read NCM 2934.20.20

29Chapter 34Heading 20Subheading

HS code 2934.20
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 29.34 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds Ácidos nucleicos e seus sais, de constituição química definida ou não; outros compostos heterocíclicos.
  3. Subheading 2934.20 Heterocyclic compounds; containing in the structure, a benzothiazole ring-system (whether or not hydrogenated), not further fused Compostos cuja estrutura contém ciclos benzotiazol (hidrogenados ou não) sem outras condensações
  4. Subitem 2934.20.20 2,2'-Dithiobis(benzothiazole) (benzothiazyl disulphide) 2,2'-Ditio-bis(benzotiazol) (dissulfeto de benzotiazila)

Other NCM codes under HS 2934.20

2934.20.10 2-Mercaptobenzothiazole and its salts2-Mercaptobenzotiazol e seus sais 2934.20.31 N-tert-Butylbenzothiazole sulphenamide (TBBS)2-(Terbutilaminotio)benzotiazol (N-terbutil-benzotiazol-sulfenamida) 2934.20.32 N-Cyclohexylbenzothiazole sulphenamide (CBS)2-(Cicloexilaminotio)benzotiazol (N-cicloexil-benzotiazol-sulfenamida) 2934.20.33 N,N-Dicyclohexylbenzothiazole sulphenamide2-(Dicicloexilaminotio)benzotiazol (N,N-dicicloexil-benzotiazol-sulfenamida) 2934.20.34 N-Oxydiethylenebenzothiazole sulphenamide (MBS)2-(4-Morfoliniltio)benzotiazol (N-oxidietileno-benzotiazol-sulfenamida) 2934.20.39 Other benzothiazole sulphenamidesOutras 2934.20.40 2-(Thiocyanomethylthio)benzothiazole (TCMTB)2-(Tiocianometiltio)benzotiazol (TCMTB) 2934.20.90 Other benzothiazole ring compoundsOutros

Questions about NCM 2934.20.20

What is NCM 2934.20.20?

NCM 2934.20.20 (29342020) is the Brazilian (Mercosur) code for benzothiazyl disulphide (MBTS). Its official Portuguese description is “2,2'-Ditio-bis(benzotiazol) (dissulfeto de benzotiazila)”.

What is the HS code for NCM 2934.20.20?

HS 2934.20 (Heterocyclic compounds; containing in the structure, a benzothiazole ring-system (whether or not hydrogenated), not further fused). 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 2934.20.20?

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.