HS Code 3811Anti-knock preparations, oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations and the like, for mineral oils (including gasoline) or other liquids used for the same purposes
5 six-digit codes · Heading 11 of 27 in Chapter 38 · World Customs Organization Harmonized System
HS code 3811 covers additives that go into fuels and oils to help them work better. They help stop engine knock, rust, gum and oil that is too thick or too thin.
Goods answering to “Anti-knock preparations, oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations and the like, for mineral oils (including gasoline) or other liquids used for the same purposes” split into 5 six-digit codes, 381111 through 381190. Each one carries its own customs description, and the exact wording below is what a classification has to match. The heading is number 11 of 27 in Chapter 38, Chemical products n.e.c., which runs to 108 six-digit codes in all.
Six-digit codes under heading 3811
| HS Code | Import–export description |
|---|---|
| 381111 | Anti-knock preparations; based on lead compounds |
| 381119 | Anti-knock preparations; other than those based on lead compounds |
| 381121 | Lubricating oil additives; containing petroleum oils or oils obtained from bituminous minerals |
| 381129 | Lubricating oil additives; not containing petroleum oils or oils obtained from bituminous minerals |
| 381190 | Oxidation and gum inhibitors, viscosity improvers, anti-corrosive preparations, other prepared additives for mineral oils or liquids used as mineral oils (including gasoline), n.e.c. in heading no. 3811 |
What HS code 3811 covers
An additive is a chemical added in small amounts to a fuel or an oil. Gasoline additives can stop an engine from knocking. Mineral oil additives can slow oxidation, keep gum from forming, or change how thick the oil is. Others protect metal parts from rust.
The additive is the product here, not the fuel or oil it goes into. Traders often search for it as fuel additives, lubricating oil additives or lead-based anti-knock compounds. All of these names lead to this one heading in the chemical products chapter.
HS 3811 subheadings: 3811.11 to 3811.90
Customs forms often write codes with a dot. Many traders type them without it. Both forms mean the same code. National tariffs add more digits after these six, so check the longer code in your own country too.
- 3811.11 (381111): anti-knock agents made with lead compounds
- 3811.19 (381119): anti-knock agents made without lead compounds
- 3811.21 (381121): lubricating oil additives that contain petroleum oils
- 3811.29 (381129): lubricating oil additives that do not contain petroleum oils
- 3811.90 (381190): all other prepared additives, such as gum inhibitors and viscosity improvers
How to choose the right 3811 subheading
Start with what the additive does. If it stops engine knock, it is an anti-knock preparation. Then ask one question: does it use lead compounds? If yes, pick 381111. If no, pick 381119.
For a lubricating oil additive, look at what is inside. The test is whether it holds petroleum oils or oils from bituminous minerals. If yes, pick 381121. If not, pick 381129. That is the only difference between the two, so the composition sheet matters.
Everything else goes to 381190. They are meant for mineral oils, or liquids used the same way, gasoline included. If you are still unsure, run the product through the HS code classifier before you file.
Related headings in Chapter 38
Some products look close to this heading but sit elsewhere. Check these before you settle on a code.
- Hydraulic brake fluids and other transmission liquids are in heading 3819.
- Anti-freezing preparations and de-icing fluids are in heading 3820.
- Biodiesel and its mixtures are in heading 3826.
- Chemical preparations not named anywhere else can fall in heading 3824.
Importers and exporters of HS 3811 products
EximDataX shows shipment-level import and export records from official customs sources. Coverage: 43 direct customs feeds plus 184 mirror-derived countries. Named buyers and named suppliers are available in 38 of the 43 direct markets. Most markets refresh weekly and some refresh daily.
You can search by HS code to see who imports and exports a product, and book a free demo. Use the records to find buyers of fuel and oil additives, or the suppliers who ship them.
Related
- Chapter 38: Chemical products n.e.c.
- All HS code chapters
- HS 3819 hydraulic brake fluids
- HS 3820 anti-freezing preparations
- HS 3812 rubber and plastic stabilisers
- HS 3826 biodiesel
- HS 3824 chemical preparations n.e.c.
- HS 3811 import data
- HS 3811 export data
- Buyers of fuel and oil additives
- Suppliers of fuel and oil additives
- HS code classifier
- Book a free demo
Nearby headings in Chapter 38
- 3805Gum, wood or sulphate turpentine, other terpenic oils; crude dipentene…2 codes
- 3806Rosin and resin acids and derivatives thereof; rosin spirit and rosin oils…4 codes
- 3807Wood tar; wood tar oils; wood creosote; wood naphtha; vegetable pitch…1 code
- 3808Insecticides, rodenticides, fungicides, herbicides, anti-sprouting products…10 codes
- 3809Finishing agents, dye carriers to accelerate the dyeing, fixing of dyestuffs…4 codes
- 3810Metal-pickling preparations; fluxes etc for soldering, brazing; welding…2 codes
- 3812Prepared rubber accelerators; compound plasticisers for rubber or plastics…4 codes
- 3813Preparations and charges for fire extinguishers; charged fire-extinguishing…1 code
- 3814Organic composite solvents and thinners, not elsewhere specified or included…1 code
- 3815Reaction initiators, reaction accelerators and catalytic preparations n.e.c.…4 codes
- 3816Refractory cements, mortars, concretes and similar compositions, including…1 code
- 3817Mixed alkylbenzenes and mixed alkylnaphthalenes, other than those of heading…1 code
Who ships under 3811?
EximDataX tracks the live import–export records filed under this heading and the 5 codes beneath it: named buyers, suppliers, quantities and values from official customs feeds.
Section VI: Products of the Chemical or Allied Industries, chapters 28–38.
HS Code 3811: common questions
What does heading 3811 cover?
It covers prepared additives for gasoline, mineral oils and similar liquids. These include anti-knock agents, oxidation and gum inhibitors, viscosity improvers and anti-corrosive products.
Which code fits lubricating oil additives?
Use 381121 if the additive contains petroleum oils. Use 381129 if it does not.
Which code fits anti-knock preparations?
Use 381111 when lead compounds are the base. Use 381119 for all other anti-knock preparations.
What is the difference between HS 381121 and 381129?
Both are lubricating oil additives. The first contains petroleum oils and the second does not.
Which code covers viscosity improvers and anti-corrosive additives?
They fall under 381190, together with oxidation and gum inhibitors. It is the catch-all code of this heading.
Where can I find import export data for HS code 3811?
Use the import data and export data pages linked on this page. They lead to the live shipment records for this heading.
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