TariffPlus – Canada & US Tariff Lookup

HS 3811-11 – Based on lead compounds

Tariff data as of T2026-2, effective Sept 1, 2026, last verified Oct 21, 2026

Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils. – Based on lead compounds.

10-digit tariff items