Brazil NCM · 4-digit heading

NCM 28.42 – Other inorganic acid or peroxoacid salts

About NCM heading 28.42

Salts of inorganic acids or peroxoacids, n.e.c. including aluminosilicates whether or not chemically defined, but excluding azides

Heading 28.42 of Brazil's NCM has 3 eight-digit codes. Official Portuguese description: Outros sais dos ácidos ou peroxoácidos inorgânicos (incluindo os aluminossilicatos de constituição química definida ou não), exceto as azidas.

The first four digits, 2842, identify this heading within chapter 28. Its six-digit subheadings follow the international HS system; the final two digits distinguish Mercosur's NCM classifications. Select a code below to read its English translation, official Portuguese text and full classification path.

For product coverage and classification context, read the HS heading 28.42 guide.

NCM codes in heading 28.42 3

  1. 2842.10 Salts of inorganic acids or peroxoacids, double or complex silicates, including aluminosilicates, whether or not chemically defined, excluding azidesSilicatos duplos ou complexos, incluindo os aluminossilicatos de constituição química definida ou não HS code
  2. 2842.10.10 Zeolite ion exchangers for water treatmentZeólitas do tipo utilizado como trocadores de íons para o tratamento de águas
  3. 2842.10.90 Other double or complex silicatesOutros
  4. 2842.90.00 Other salts of inorganic acids or peroxoacidsOutros

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.