Brazil NCM · 8-digit subitem

NCM 2935.90.91 – Chloramine-B and chloramine-T

NCM 2935.90.91 (also written 29359091) is Brazil's code for chloramine-B and chloramine-T. Its first 6 digits are HS code 2935.90.

Official description of NCM 2935.90.91

PortuguêsOfficial
Cloramina-B e cloramina-T
EnglishUnofficial translation

Chloramine-B and chloramine-T

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

How to read NCM 2935.90.91

29Chapter 35Heading 90Subheading

HS code 2935.90
Same in every country

9Item 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 29.35 Sulphonamides Sulfonamidas.
  3. Subheading 2935.90 Sulphonamides; n.e.c. in heading no. 2935 Outras
  4. Item 2935.90.9 Other Outras
  5. Subitem 2935.90.91 Chloramine-B and chloramine-T Cloramina-B e cloramina-T

Other NCM codes under HS 2935.90

2935.90.11 Sulfadiazine and its sodium saltSulfadiazina e seu sal sódico 2935.90.12 ChlortalidoneClortalidona 2935.90.13 SulpirideSulpirida 2935.90.14 VeraliprideVeraliprida 2935.90.15 Sulfamethazine and its sodium saltSulfametazina (4,6-dimetil-2-sulfanilamidopirimidina) e seu sal sódico 2935.90.19 Other sulphonamides with only N-heterocyclesOutras 2935.90.21 FurosemideFurosemida 2935.90.22 PhthalylsulfathiazoleFtalilsulfatiazol 2935.90.23 PiroxicamPiroxicam 2935.90.24 TenoxicamTenoxicam 2935.90.25 SulfamethoxazoleSulfametoxazol 2935.90.29 Other sulphonamides with other heterocyclesOutras 2935.90.92 Glyburide (glibenclamide)Gliburida 2935.90.93 ToluenesulphonamidesToluenossulfonamidas 2935.90.94 NimesulideNimesulida 2935.90.95 BumetanideBumetanida 2935.90.96 SulfaguanidineSulfaguanidina 2935.90.99 Other sulphonamides without heterocyclesOutras

Questions about NCM 2935.90.91

What is NCM 2935.90.91?

NCM 2935.90.91 (29359091) is the Brazilian (Mercosur) code for chloramine-B and chloramine-T. Its official Portuguese description is “Cloramina-B e cloramina-T”.

What is the HS code for NCM 2935.90.91?

HS 2935.90 (Sulphonamides; n.e.c. in heading no. 2935). 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 2935.90.91?

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.