HSN code directory
HSN Code 3811: Anti-knock preparations, oxidation inhibitors, gum
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
All 8-digit HSN codes under this heading
| HSN code | Description |
|---|---|
| 38111100 | Anti-knock preparations: based on lead compounds |
| 38111900 | Anti-knock preparations: other |
| 38112100 | Additives for lubricating oils: containing petroleum oils or oils obtained from bituminous minerals |
| 38112900 | Additives for lubricating oils: other |
| 38119000 | Additives for lubricating oils: other |
GST rate guide for this chapter
Insecticides, disinfectants and most chemical products are taxed at 18%. Bio-pesticides and certain agricultural inputs are taxed at 5%.
Browse the full HSN code list or search any HSN or SAC code.
GST rates depend on the exact description of the goods in the rate schedules, not only on the HSN code. Some goods under the same heading are taxed at different rates, and conditions or exemptions can apply. Confirm the rate for your product before you raise invoices.
Frequently asked questions
How many digits of the HSN code must I show on a GST invoice?
Businesses with aggregate turnover of up to ₹5 crore in the previous year must show at least a 4-digit HSN code on B2B invoices. Businesses with turnover above ₹5 crore must show a 6-digit code on all invoices. The full 8-digit code is used for imports and exports.
What is the difference between an HSN heading and an 8-digit HSN code?
The first 2 digits are the chapter, 4 digits are the heading and 6 digits are the subheading under the international Harmonized System. India adds 2 more digits for a more precise tariff item, giving the 8-digit code used in customs and GST.
What happens if I use the wrong HSN code?
A wrong HSN code can lead to tax being charged at the wrong rate, mismatches in GSTR-1 and the HSN summary, and notices with interest and penalty. If you are unsure about classification, a CA can review it before you file.
Need help with classification or GST rates? GST registration and return filing or book a free consultation with our CA-led team.