HS code · 6-digit subheading
HS Code 3811.90 – 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
HS code 3811.90 is the 6-digit subheading for 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. It is used for fuel stabilizer additives, engine oil anti-wear additives, diesel fuel pour point depressants, hydraulic fluid anti-corrosion agents and transmission fluid friction modifiers.
What HS 3811.90 covers
These chemical preparations are crucial for enhancing the performance and longevity of mineral oils and fuels, playing a vital role in various industrial and automotive applications. This category encompasses a broad range of specialized additives designed to combat degradation, improve flow characteristics, and prevent corrosion within engines, machinery, and fuel systems. Importers and exporters in this sector include major oil companies, chemical manufacturers, and distributors serving the automotive, marine, aviation, and industrial lubricant markets. Key things to know involve the specific application requirements, as different additives are formulated for gasoline, diesel, lubricating oils, or hydraulic fluids. The global demand is driven by the need for more efficient engines, stricter environmental regulations, and the extension of equipment lifespan. Trade often involves bulk shipments of these concentrated chemical blends, which are then incorporated into final petroleum products. Understanding the regulatory landscape for fuel and lubricant additives in different regions is critical for successful international trade.
- Covers
- Fuel stabilizer additives
- Engine oil anti-wear additives
- Diesel fuel pour point depressants
- Hydraulic fluid anti-corrosion agents
- Transmission fluid friction modifiers
- Gasoline octane boosters
- Marine fuel dispersants
- Industrial lubricant anti-foaming agents
- Examples
- Lubrizol Anglamol
- Afton HiTEC
- Infineum P-series
- BASF Keropur
- Chevron Oronite OLOA
Codes often confused with 3811.90
Common mistake. This code can be confused with 381111 (anti-knock preparations based on lead compounds) or 381121 (other anti-knock preparations for gasoline) if the primary function is misidentified, as 381190 covers a broader range of "other" additives.
Top exporters and importers of HS code 381190, 2025
In 2025, the largest exporter of HS code 381190 in UN Comtrade data was the United States, with 28% of world exports; the largest importer in UN Comtrade data was Canada, with 6.8% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 United States $720M 28% of world exports
- 2 Germany $582M 23% of world exports
- 3 India $188M 7.4% of world exports
World total: $2.5B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Canada $186M 6.8% of world imports
- 2 United States $169M 6.2% of world imports
- 3 Singapore $146M 5.3% of world imports
World total: $2.7B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for 3811.90 2
Brazil splits HS 3811.90 into 2 NCM codes, Mercosur's 8-digit tariff lines.
- 3811.90.10 Ashless dispersants for fuel oilsDispersantes sem cinzas, para óleos de petróleo combustíveis
- 3811.90.90 Other mineral oil additives and inhibitorsOutros
All Brazil NCM codes in heading 38.11 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 3811.90
What is HS code 381190?
HS code 381190 is a 6-digit subheading in the Harmonized System that covers: 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. These chemical preparations are crucial for enhancing the performance and longevity of mineral oils and fuels, playing a vital role in various industrial and automotive applications. This category encompasses a broad range of specialized additives designed to combat degradation, improve flow characteristics, and prevent corrosion within engines, machinery, and fuel systems. Importers and exporters in this sector include major oil companies, chemical manufacturers, and distributors serving the automotive, marine, aviation, and industrial lubricant markets. Key things to know involve the specific application requirements, as different additives are formulated for gasoline, diesel, lubricating oils, or hydraulic fluids. The global demand is driven by the need for more efficient engines, stricter environmental regulations, and the extension of equipment lifespan. Trade often involves bulk shipments of these concentrated chemical blends, which are then incorporated into final petroleum products. Understanding the regulatory landscape for fuel and lubricant additives in different regions is critical for successful international trade.
What products fall under HS code 381190?
Fuel stabilizer additives, Engine oil anti-wear additives, Diesel fuel pour point depressants, Hydraulic fluid anti-corrosion agents, Transmission fluid friction modifiers, Gasoline octane boosters, Marine fuel dispersants, Industrial lubricant anti-foaming agents
What are common misclassifications for HS code 381190?
This code can be confused with 381111 (anti-knock preparations based on lead compounds) or 381121 (other anti-knock preparations for gasoline) if the primary function is misidentified, as 381190 covers a broader range of "other" additives.
Which countries are the top exporters of goods under HS code 381190?
In 2025, the top exporters of HS code 381190 in UN Comtrade data were the United States ($720M, 28% of world exports), Germany ($582M) and India ($188M). World exports came to about $2.5B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 381190?
In 2025, the top importers of HS code 381190 in UN Comtrade data were Canada ($186M, 6.8% of world imports), the United States ($169M) and Singapore ($146M). World imports came to about $2.7B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 381190 structured?
HS code 381190 is a 6-digit subheading under the Harmonized System. The first 2 digits (38) identify the chapter, digits 3-4 (11) identify the heading, and digits 5-6 (90) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 381190?
Brazil splits HS code 381190 into 2 NCM codes: 3811.90.10 (Ashless dispersants for fuel oils), 3811.90.90 (Other mineral oil additives and inhibitors). The first 6 digits of each match the HS code.