Brazil NCM · 4-digit heading

NCM 29.11 – Acetals and hemiacetals and their derivatives

About NCM heading 29.11

Acetals and hemiacetals; whether or not with other oxygen function, and their halogenated, sulphonated, nitrated or nitrostated derivatives

Heading 29.11 of Brazil's NCM has 2 eight-digit codes. Official Portuguese description: Acetais e hemiacetais, mesmo que contenham outras funções oxigenadas, e seus derivados halogenados, sulfonados, nitrados ou nitrosados.

The first four digits, 2911, identify this heading within chapter 29. 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 29.11 guide.

NCM codes in heading 29.11 2

  1. 2911.00 Acetals and hemiacetals; whether or not with other oxygen function, and their halogenated, sulphonated, nitrated or nitrosated derivativesAcetais e hemiacetais, mesmo que contenham outras funções oxigenadas, e seus derivados halogenados, sulfonados, nitrados ou nitrosados. HS code
  2. 2911.00.10 2-Nitrobenzaldehyde dimethyl acetalDimetilacetal do 2-nitrobenzaldeído
  3. 2911.00.90 Other acetals and hemiacetalsOutros

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.