Skip to content
10,515 NCM codes · 5,612 HS headings
Data: May 2026
Last updated: May 2026
Ch. 38›HS 3811.90

NCM 3811.90.10

Oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations, other prepared additives for mineral oils or liquids used as mineral oils (including gasoline), n.e.c. in heading no. 3811

Brazil import duty rates — Updated May 2026

12.6%
Import Duty (II)
5.2%
IPI
—
Ex-Tarifário
Calc
Full landed cost

NCM 3811.90.10 is the Brazilian tariff code for oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations, other prepared additives for mineral oils or liquids used as mineral oils (including gasoline), n.e.c. in heading no. 3811. This code carries 12.6% import duty (II) and 5.2% IPI. EU-origin products in this category benefit from the EU-Mercosur trade agreement. This is one of 2 NCM codes under HS heading 3811.90.

Classification hierarchy

Ch. 38Miscellaneous chemical products
3811Anti-knock preparations, oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations and the like, for mineral oils (including gasoline) or other liquids used for the same purposes
3811.90Oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations, other prepared additives for mineral oils or liquids used as mineral oils (including gasoline), n.e.c. in heading no. 3811
3811.90.10
Oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations, other prepared additives for mineral oils or liquids used as mineral oils (including gasoline), n.e.c. in heading no. 3811

Official Brazilian text: Dispersantes sem cinzas, para óleos de petróleo combustíveis

Tax breakdown for NCM 3811.90.10

Import Duty (II)Imposto de Importação
12.6%
IPIExcise tax
5.2%
PIS/COFINSSocial contributions
11.75%
ICMSState VAT — varies by state
17–20%
AFRMMMaritime freight surcharge
8%
Calculate exact landed cost →

Taxes are cascading — each applies on a different base. Use the calculator for the exact total.

Trade overview — HS 3811.90

UN Comtrade 2024

Brazil imported $84.0M of products under HS heading 3811.90 in 2024. Top suppliers:

1Germany
$32.5M38.7%
2USA
$18.0M21.4%
3India
$10.1M12%
4United Kingdom
$9.0M10.8%
5France
$5.7M6.8%

Trade data is at the 6-digit HS level. See full HS 3811.90 details →

Regulatory agencies

ANVISAIBAMA

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 3811.90

NCMDescription (PT — official)IIIPI
3811.90.90Outros0%5.2%Calculate →

How to import NCM 3811.90.10 into Brazil

  1. Confirm with your customs broker — NCM 3811.90.10 must exactly match your product description. Misclassification leads to fines and seizure.
  2. Calculate total cost — base import duty is 12.6%, but Brazil adds IPI (5.2%), PIS/COFINS (11.75%), ICMS (17–20%), and AFRMM (8%) on top. Use our calculator for the exact total.
  3. Get import licenses — this chapter requires clearance from ANVISA, IBAMA. Apply before shipping.
  4. 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 3811.90.10

Enter CIF value and get a breakdown of all 7 Brazilian import taxes.

Open CalculatorHS 3811.90 Details