HS code for viscosity improvers

In the UK Trade Tariff’s list of everyday names, “viscosity improvers” points to subheading 3811.90: anti-knock preparations, oxidation inhibitors: other. Check the description and the notes of the chapter before declaring: the right code depends on what the goods are made of and how they are used.

The UK Global Tariff divides 3811.90 into 4 tariff lines; the duty is 4%.

3811.90 is a single line in the EU Combined Nomenclature, where the duty is 5.8%.

The Turkish Customs Tariff Schedule divides 3811.90 into 4 tariff lines; the duty is 5.8%.