Brazil NCM · 4-digit heading
NCM 38.15 – Reaction initiators, accelerators and catalysts
About NCM heading 38.15
Reaction initiators, reaction accelerators and catalytic preparations n.e.c. or included
Heading 38.15 of Brazil's NCM has 10 eight-digit codes. Official Portuguese description: Iniciadores de reação, aceleradores de reação e preparações catalíticas, não especificados nem compreendidos noutras posições.
The first four digits, 3815, identify this heading within chapter 38. 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 38.15 guide.
NCM codes in heading 38.15 10
- 3815.1 Supported catalysts: Catalisadores em suporte:
- 3815.11.00 Supported nickel or nickel compound catalystsTendo como substância ativa o níquel ou um composto de níquel
- 3815.12 Catalysts, supported; reaction initiators, reaction accelerators and catalytic preparations, with precious metal or precious metal compounds as the active substance, n.e.c. or includedTendo como substância ativa um metal precioso ou um composto de metal precioso HS code
- 3815.12.10 Precious-metal honeycomb catalysts for exhaustsEm colmeia cerâmica ou metálica para conversão catalítica de gases de escape de veículos
- 3815.12.20 Precious-metal catalysts, particles under 500 µmCom tamanho de partícula inferior a 500 micrômetros (mícrons)
- 3815.12.90 Other supported precious-metal catalystsOutros
- 3815.19.00 Other supported catalystsOutros
- 3815.90 Reaction initiators, reaction accelerators and catalytic preparations, unsupported, n.e.c. or includedOutros HS code
- 3815.90.10 Petroleum cracking catalystsPara craqueamento de petróleo
- 3815.90.9 Other Outros
- 3815.90.91 Isoprenylaluminium (IPRA) catalystsTendo como substância ativa o isoprenilalumínio (IPRA)
- 3815.90.92 Zinc oxide catalystsTendo como substância ativa o óxido de zinco
- 3815.90.93 Rare-earth oxide catalystsTendo como substância ativa óxidos de terras raras
- 3815.90.99 Other reaction initiators and catalystsOutros
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.