NCM 3815.90.91
Reaction initiators, reaction accelerators and catalytic preparations, unsupported, n.e.c. or included
Brazil import duty rates — Updated May 2026
NCM 3815.90.91 is the Brazilian tariff code for reaction initiators, reaction accelerators and catalytic preparations, unsupported, n.e.c. or included. This code carries 0% import duty (II) and 6.5% IPI. EU-origin products in this category benefit from the EU-Mercosur trade agreement. This is one of 5 NCM codes under HS heading 3815.90.
Classification hierarchy
Official Brazilian text: Tendo como substância ativa o isoprenilalumínio (IPRA)
Tax breakdown for NCM 3815.90.91
Taxes are cascading — each applies on a different base. Use the calculator for the exact total.
Trade overview — HS 3815.90
UN Comtrade 2024Brazil imported $87.2M of products under HS heading 3815.90 in 2024. Top suppliers:
Trade data is at the 6-digit HS level. See full HS 3815.90 details →
Regulatory agencies
Products under this NCM may need pre-approval before customs clearance.
EU-Mercosur impact
Most products see tariff elimination over 7-10 years. Diagnostic reagents and specialty chemicals benefit.
Other NCM codes under HS 3815.90
| NCM | Description (PT — official) | II | IPI | |
|---|---|---|---|---|
| 3815.90.10 | Para craqueamento de petróleo | 3.6% | 0% | Calculate → |
| 3815.90.92 | Tendo como substância ativa o óxido de zinco | 10.8% | 6.5% | Calculate → |
| 3815.90.93 | Tendo como substância ativa óxidos de terras raras | 0% | 6.5% | Calculate → |
| 3815.90.99 | Outros | 3.6% | 6.5% | Calculate → |
How to import NCM 3815.90.91 into Brazil
- Confirm with your customs broker — NCM 3815.90.91 must exactly match your product description. Misclassification leads to fines and seizure.
- Calculate total cost — base import duty is 0%, but Brazil adds IPI (6.5%), PIS/COFINS (11.75%), ICMS (17–20%), and AFRMM (8%) on top. Use our calculator for the exact total.
- Get import licenses — this chapter requires clearance from ANVISA, IBAMA. Apply before shipping.
- Choose entry port — ICMS varies by state (17–20%). Compare state rates to optimize your route.
Brazil Import Taxes Explained
Complete guide to the 7 cascading taxes on every import.
How to Export to Brazil
Step-by-step guide for foreign companies.
Regulatory Agencies
ANVISA, INMETRO, MAPA — which products need pre-approval?
Calculate your landed cost for NCM 3815.90.91
Enter CIF value and get a breakdown of all 7 Brazilian import taxes.