FeaturesHow it worksPricingCustom BillingFree ToolsFAQContact
Download AppSign Up
Free Tools/HSN Code Finder/Chapter 38/HSN 3811
HSN 38114-Digit Heading

HSN 3811: Anti-knock preparations – GST Rate

HSN 3811 covers anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives. GST on HSN 3811 is 18% (rates effective 22 September 2025). This heading has 5 tariff items, for example 3811 11 00, 3811 19 00 and 3811 21 00.

Chapter 38: Miscellaneous chemical products

GST rates as per CBIC Notifications 09/2025 and 10/2025 (Central Tax - Rate), effective 22 September 2025. Last updated: October 2026. Always verify on the official GST portal before filing.

GST Rates for Heading 3811

18%CGST 9% + SGST 9% / IGST 18%

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

Reference: Schedule II, S. No. 98 (Spec: 3811)

Sub-Headings & Tariff Items Under 3811

Showing 10 sub-classification codes with complete hierarchy descriptions.

3811116-Digit Sub-heading

Chain: Miscellaneous chemical products > 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

381111008-Digit Tariff Item

Chain: Miscellaneous chemical products > 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 > Based On Lead Compounds

3811196-Digit Sub-heading

Chain: Miscellaneous chemical products > 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 > Other

381119008-Digit Tariff Item

Chain: Miscellaneous chemical products > 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 > Other > Other

3811216-Digit Sub-heading

Chain: Miscellaneous chemical products > 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 > Containing Petroleum Oils Or Oils Obtained From Bituminous Minerals

381121008-Digit Tariff Item

Chain: Miscellaneous chemical products > 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 > Containing Petroleum Oils Or Oils Obtained From Bituminous Minerals > Containing Petroleum Oils Or Oils Obtained From Bituminous Minerals

3811296-Digit Sub-heading

Chain: Miscellaneous chemical products > 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 > Other

381129008-Digit Tariff Item

Chain: Miscellaneous chemical products > 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 > Other > Other

3811906-Digit Sub-heading

Chain: Miscellaneous chemical products > 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 > Other

381190008-Digit Tariff Item

Chain: Miscellaneous chemical products > 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 > Other > Other

Other Headings in Chapter 38

HSN 3801
Artificial Graphite, Colloidal Or Semi-Colloidal Graphite, Preparations Based On Graphite Or Other Carbon In The Form Of Pastes, Blocks, Plates Or Other Semi-Manufactures
HSN 3802
Activated Carbon; Activated Natural Mineral Products; Animal Black, Including Spent Animal Black
HSN 3803
Tall Oil, Whether Or Not Refined
HSN 3804
Residual Lyes From The Manufacture Of Wood Pulp, Whether Or Not Concentrated, Desugared Or Chemically Treated, Including Lignin Sulphonates, But Excluding Tall Oil Of Heading 3802
HSN 3805
Gum, Wood Or Sulphate Turpentine And Other Terpenic Oils Produced By The Distillation Or Other Treatment Of Coniferous Woods, Crude Dipentene, Sulphite Turpentine And Other Crude Para-Cymene, Pine Oil Containing Alpha-Terpineol As The Main Constituent
HSN 3806
Rosin And Resin Acids, And Derivatives Thereof; Rosin Spirit And Rosin Oils; Run Gums
HSN 3807
Wood Tar, Wood Tar Oils, Wood Creosote, Wood Naphtha, Vegetable Pitch, Brewers' Pitch And Similar Preparations Based On Rosin, Resin Acids Or On Vegetable Pitch
HSN 3808
Insecticides, Rodenticides, Fungicides, Herbicides, Anti-Sprouting Products And Plant-Growth Regulators, Disinfectants And Similar Products, Put Up In Forms Or Packings For Retail Sale Or As Preparations Or Articles (For Example, Sulphurtreated Bands, Wicks And Candles, And Fly-Papers)
HSN 3809
Finishing Agents, Dye Carriers To Accelerate The Dyeing Or Fixing Of Dye-Stuffs And Other Products And Preparations (For Example, Dressings And Mordants), Of A Kind Used In The Textile, Paper, Leather Or Like Industries, Not Elsewhere Specified Or Included
HSN 3810
Pickling Preparations For Metal Surfaces, Fluxes And Other Auxiliary Preparations For Soldering, Brazing Or Welding, Soldering, Brazing Or Welding Powders And Pastes Consisting Of Metal And Other Materials, Preparations Of A Kind Used As Cores Or Coatings For Welding Electrodes Or Rods
HSN 3812
Prepared Rubber Accelerators; Compound Plasticisers For Rubber Or Plastics, Not Elsewhere Specified Or Included; Anti-Oxidising Preparations And Other Compound Stabilisers For Rubber Or Plastics
HSN 3813
Preparations And Charges For Fire-Extinguishers; Charged Fire-Extinguishing Grenades
HSN 3814
Organic Composite Solvents And Thinners, Not Elsewhere Specified Or Included; Prepared Paint Or Varnish Removers
HSN 3815
Reaction Initiators, Reaction Accelerators And Catalytic Preparations, Not Elsewhere Specified Or Included
HSN 3816
Refractory Cements, Mortars, Concretes And Similar Compositions, Including Dolomite Ramming Mix, Other Than Products Of Heading 3800
HSN 3817
Mixed Alkylbenzenes And Mixed Alkylnaphthalenes, Other Than Those Of Heading 2707 Or 2902
HSN 3818
Chemical Elements Doped For Use In Electronics, In The Form Of Discs, Wafers Or Similar Forms, Chemical Compounds Doped For Use In Electronics
HSN 3819
Hydraulic Brake Fluids And Other Prepared Liquids For Hydraulic Transmission, Not Containing Or Containing Less Than 70% By Weight Of Petroleum Oils Or Oils Obtained From Bituminous Minerals
HSN 3820
Anti-Freezing Preparations And Prepared De-Icing Fluids
HSN 3821
Prepared Culture Media For Development Or Maintenance Of Micro-Organism (Including Viruses And The Like) Or Of Plant Human Or Animal Cells
HSN 3822
Diagnostic Or Laboratory Reagents On A Backing, Prepared Diagnostic Or Laboratory Reagents Whether Or Not On A Backing, Whether Or Not Put Up In The Form Of Kits, Other Than Those Of Heading 3006; Certified Reference Materials
HSN 3823
Industrial Monocarboxylic Fatty Acids; Acid Oils From Refining; Industrial Fatty Alcohols
HSN 3824
Prepared Binders For Foundry Moulds Or Cores; Chemical Products And Preparations Of The Chemical Or Allied Industries (Including Those Consisting Of Mixtures Of Natural Products), Not Elsewhere Specified Or Included
HSN 3825
Residual Products Of The Chemical Or Allied Industries, Not Elsewhere Specified Or Included, Municipal Waste, Sewage Sludge, Other Wastes Specified In Note 6 To This Chapter
HSN 3826
Biodiesel And Mixtures Thereof, Not Containing Or Containing Less Than 70 % By Weight Of Petroleum Oils And Oils Obtained From Bituminous Minerals
HSN 3827
Mixtures Containing Halogenated Derivatives Of Methane, Ethane Or Propane, Not Elsewhere Specified Or Included
Search all 21,000+ HSN & SAC codes

Create GST invoices with HSN 3811 automatically in Udyog

Udyog automatically maps product items to the right HSN codes and applies current tax rates with zero manual errors.

Start Free Trial in Udyog →