Brazil NCM · 8-digit code

NCM 2903.51.00 – HFO-1234yf, HFO-1234ze and (Z)-HFO-1336mzz

NCM 2903.51.00 (also written 29035100) is Brazil's code for hFO-1234yf, HFO-1234ze and (Z)-HFO-1336mzz. Its first 6 digits are HS code 2903.51.

Official description of NCM 2903.51.00

PortuguêsOfficial
2,3,3,3-Tetrafluoropropeno (HFO-1234yf), 1,3,3,3-tetrafluoropropeno (HFO-1234ze) e (Z)-1,1,1,4,4,4-hexafluoro-2-buteno (HFO-1336mzz)
EnglishUnofficial translation

Unsaturated fluorinated derivatives of acyclic hydrocarbons; 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze) and (Z)-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz)

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

How to read NCM 2903.51.00

29Chapter 03Heading 51Subheading

HS code 2903.51
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 29.03 Halogenated derivatives of hydrocarbons Derivados halogenados dos hidrocarbonetos.
  3. Group 2903.5 Unsaturated fluorinated derivatives of acyclic hydrocarbons: Derivados fluorados não saturados dos hidrocarbonetos acíclicos:
  4. Subheading 2903.51 Unsaturated fluorinated derivatives of acyclic hydrocarbons; 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze) and (Z)-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz)
  5. Subitem 2903.51.00 Unsaturated fluorinated derivatives of acyclic hydrocarbons; 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze) and (Z)-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz) 2,3,3,3-Tetrafluoropropeno (HFO-1234yf), 1,3,3,3-tetrafluoropropeno (HFO-1234ze) e (Z)-1,1,1,4,4,4-hexafluoro-2-buteno (HFO-1336mzz)

Questions about NCM 2903.51.00

What is NCM 2903.51.00?

NCM 2903.51.00 (29035100) is the Brazilian (Mercosur) code for hFO-1234yf, HFO-1234ze and (Z)-HFO-1336mzz. Its official Portuguese description is “2,3,3,3-Tetrafluoropropeno (HFO-1234yf), 1,3,3,3-tetrafluoropropeno (HFO-1234ze) e (Z)-1,1,1,4,4,4-hexafluoro-2-buteno (HFO-1336mzz)”.

What is the HS code for NCM 2903.51.00?

HS 2903.51 (Unsaturated fluorinated derivatives of acyclic hydrocarbons; 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze) and (Z)-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz)). 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 2903.51.00?

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.