# 3811 — 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

HS code 3811 classifies 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. It belongs to Chapter 38 (Miscellaneous chemical products) of Section VI (Products of the chemical or allied industries) of the Harmonized System.

> Section VI · Products of the chemical or allied industries
> Chapter 38 · Miscellaneous chemical products

**HS code:** `3811`

## Description

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

## Subheadings

- `381111` — Anti-knock preparations — Based on lead compounds
- `381119` — Anti-knock preparations — Other
- `381121` — Additives for lubricating oils — Containing petroleum oils or oils obtained from bituminous minerals
- `381129` — Additives for lubricating oils — Other
- `381190` — Other

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Source: https://eximagent.ai/hscode/38/3811
Last updated: 2026-06-03
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