Czech Republic HS Code

HS Code 381121: Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Additives for lubricating oils : Containing petroleum oils or oils obtained from bituminous minerals in Czech Republic

Q: Is HS code 381121 the same across all countries?

Yes — up to the 6-digit level, HS code 381121 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. Czech Republic extends it under CN / TARIC.

Q: What system does Czech Republic use to classify HS code 381121?

Czech Republic classifies products under the Combined Nomenclature / TARIC (CN / TARIC; locally Kombinovaná nomenklatura), which extends HS codes to 10 digits. The first 6 digits align with the WCO Harmonized System, and the rest cover national tariff and statistical needs.

Q: Where can I officially look up HS code 381121 in Czech Republic?

The official source is https://www.celnisprava.cz/en/. For faster cross-country lookups, TradeInt's HS Code Tool consolidates classifications across all major countries in one place.

What is HS Code 381121 in Czech Republic

Under Czech Republic's Combined Nomenclature / TARIC (Kombinovaná nomenklatura), HS Code 381121 is the WCO Harmonized System subheading for Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Additives for lubricating oils : Containing petroleum oils or oils obtained from bituminous minerals. This is the most detailed internationally standardized level; Czech Republic extends classifications to 10 digits under its national tariff system. 381121 belongs to Section VI: Products of the chemical or allied industries, Chapter 38: Miscellaneous chemical products, Heading 3811: Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils.

Explore more 2026 Latest Czech Republic import export trade data and shipment records for HS Code Petroleum-Based Lubricant Additives on TradeInt global trade data platform

Classification Path of HS Code 381121 in Czech Republic

Section VI

Chapters (28-38) Products of the chemical or allied industries

Chapter 38

Miscellaneous chemical products

HS Code 3811

Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils

HS Code 381121

HS Code 3811210080

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing : -|polyisobutylene aromatic polyamine succinimide, -|more than 40|% but not more than 60|% by weight of mineral oils,with a nitrogen content of more than 0,6|% but not more than 0,9|% by weight, for use in the manufacture of additive blends for lubricating oils

HS Code 3811210048

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing -|overbased magnesium (C20-C24) alkylbenzenesulphonates (CAS RN 231297-75-9) and -|by weight more than 25|% but not more than 50|% of mineral oils,having a|total base number|of more than 350, but not more than 450, for use in the manufacture of lubricating oils

HS Code 3811210019

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing: -| a polyisobutylene succinimide based mixture, and -| more than 30|% but not more than 50|% by weight of mineral oils,having a total base number of more than 40, for use in the manufacture of lubricating oils

HS Code 3811210065

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing: -|a polyisobutylene succinimide based mixture (CAS RN 160610-76-4), and -|more than 35|% but not more than 50|% by weight of mineral oils,having a sulphur content of more than 0,7|% but not more than 1,3|% by weight, having a total base number of more than 8, for use in the manufacture of lubricating oils

HS Code 3811210037

HS Code 3811210025

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing: -|a| (C8-18) alkyl polymethacrylate copolymer with| N-[3-(dimethylamino)propyl]methacrylamide, of an average molecular weight (Mw) of more than 10,000|but not more than 20,000, and -|more than 15|% , but not more than 30|% by weight of mineral oils,for use in the manufacture of| lubricating oils

HS Code 3811210063

HS Code 3811210073

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing: -|borated succinimide compounds (CAS RN 134758-95-5), -|mineral oils, and -|having a total base number (TBN) greater than 40,for use in the manufacture of additive mixtures|for lubricating oils

HS Code 3811210075

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing: -|Calcium (C10-C14) dialkylbenzenesulfonates, -|more than 40|%, but not more than 60|% by weight of mineral oils,with a total base number of not more than 10, for use in the manufacture of blends of additives for lubricating oils

HS Code 3811210033

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing: -|calcium salts of heptylphenol reaction products with formaldehyde (CAS RN 84605-23-2), and -|mineral oils,having a total base number (TBN) of more than 40|but not more than 100, for use in the manufacture of lubricating oils or|overbased detergents for use in lubricating oils

HS Code 3811210055

HS Code 3811210083

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing: -|polyisobutene succinimide derived from reaction of polyethylenepolyamines with polyisobutenyl succinic anhydride (CAS RN 84605-20-9), -|containing more than 31,9|% but not more than 43,3|% by weight of mineral oils, -|not more than 0,05|% by weight chlorine, and -|having a total base number (TBN) greater than 20,for use in the manufacture of additives blends for lubricating oils

HS Code 3811210053

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing:| -|overbased calcium petroleum sulphonates (CAS 68783-96-0) with a sulphonate content by weight of 15|%|or more, but not more than 30|% and -|by weight more than 40|%|but not more than 60|% of mineral oil,having a total base number|of 280|or more but not more than 420,for use in the manufacture of lubricating oils

HS Code 3811210027

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing:-10 % or more by weight of an ethylene-propylene copolymer chemically modified by succinic anhydride groups reacted with 3-nitroaniline, and-mineral oils,for use in the manufacture of lubricating oils

HS Code 3811210013

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives containing|: -|borated magnesium (C16-C24) alkylbenzene sulphonates and -|mineral oils,having a total base number| (TBN) of more than 250, but not more than 350,| for use in the manufacture of| lubricating oils

HS Code 3811210050

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives for lubricating oils, -|based on calcium C16-24|alkylbenzenesulphonates (CAS|RN|70024-69-0), -|containing mineral oils,used as a concentrated additive for the manufacture of engine oils through a blending process

HS Code 3811210070

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives for lubricating oils, -|containing polyisobutylene succinimide derived from reaction products of polyethylenepolyamines with polyisobutenyl succinic anhydride (CAS RN 84605-20-9), -|containing mineral oils, -|with a chlorine content by weight of 0,05|% or more but not more than 0,25|%, -|with a total base number (TBN) of more than 20,used as a concentrated additive for the manufacture of engine oils through a blending process

HS Code 3811210020

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives for lubricating oils, based on complex organic molybdenum compounds, in the form of a solution in mineral oil

HS Code 3811210060

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives for lubricating oils, containing mineral oils, -|based on calcium polypropylenyl substituted benzenesulphonate (CAS RN 75975-85-8) with a content by weight of 25|% or more but not more than 35|%, -|with a total base number (TBN) of 280|or more but not more than 320,used as a concentrated additive for the manufacture of engine oils through a blending process

HS Code 3811210030

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives for lubricating oils, containing mineral oils, consisting of calcium salts of reaction products of polyisobutylene substituted phenol with salicylic acid and formaldehyde, used as a concentrated additive for the manufacture of engine oils through a blending process

HS Code 3811210085

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Additives, -|containing more than 20|% but not more than 45|% by weight of mineral oils, -|based on a mixture of branched dodecylphenol sulfide calcium salts, whether or not carbonated,for use in the manufacture of blends of additives

HS Code 3811210077

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Antifoam additives consisting of: -|a copolymer of 2-ethylhexyl acrylate and ethyl acrylate, and -|more than 50|% but not more than 80|% by weight of mineral oilsfor use in the manufacture of| additive blends for lubricating oils

HS Code 3811210016

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Detergent containing : -|Calcium salt of beta-aminocarbonyl alkylphenol (reaction product Mannich base of alkylphenol) -|40|% or more but not more than 60|% by weight of mineral oils and -|having a total base number more than 120used in the manufacture of blends of additives for lubricating oils

HS Code 3811210018

HS Code 3811210011

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Dispersing agent and oxidation inhibitor containing : -|o-amino polyisobutylenephenol (CAS RN 78330-13-9), -|more than 30|% by weight but not more than 50|% by weight of mineral oils,used in the manufacture of blends of additives for lubricating oils

HS Code 3811210012

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Dispersing agent containing : -|esters of polyisobutenyl succinic acid and pentaerythritol (CAS RN 103650-95-9), -|35|% or more but not more than 55|% by weight of mineral oils and -|with a chlorine content of not more than 0,05|% by weight,used in the manufacture of blends of additives for lubricating oils

HS Code 3811210014

HS Code 3811210090

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Other

HS Code 3811210010

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Salts of dinonylnaphthalenesulphonic acid, in the form of a solution in mineral oils

Czech Republic Tariff Classification: Combined Nomenclature / TARIC (CN / TARIC)

In Czech Republic, HS 381121 is classified under the Combined Nomenclature / TARIC (Kombinovaná nomenklatura) — a 10-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Combined Nomenclature / TARIC (CN / TARIC)

Local name Kombinovaná nomenklatura

Digits 10

Official source https://www.celnisprava.cz/en/

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Top Trading Product of HS Code 3811

Top Czech Republic import Product Under HS Code 3811

1 381190: Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Other $15.7M 2 381121: Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Additives for lubricating oils : Containing petroleum oils or oils obtained from bituminous minerals $5.1M 3 381119: Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Antiknock preparations : Other $760.8K

Figures shown for 2024.

For more 2026 recent data, search for Czech Republic import trade records

Top Czech Republic export Product Under HS Code 3811

1 381190: Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Other $9.4M 2 381121: Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Additives for lubricating oils : Containing petroleum oils or oils obtained from bituminous minerals $3.7M 3 381119: Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Antiknock preparations : Other $334.2K

Figures shown for 2024.

For more 2026 recent data, search for Czech Republic export trade records

Related HS Code to Czech Republic Petroleum-Based Lubricant Additives (381121)

HS Code 3811210010

Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil : Salts of dinonylnaphthalenesulphonic acid, in the form of a solution in mineral oils

Frequently Asked Questions

What is HS code 381121 in Czech Republic?

HS code 381121 covers Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anticorrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils : Additives for lubricating oils : Containing petroleum oils or oils obtained from bituminous minerals in Czech Republic. It sits in Chapter 38 (Miscellaneous chemical products), Heading 3811 of the Harmonized System, and is classified under CN / TARIC.

Is HS code 381121 the same across all countries?

What system does Czech Republic use to classify HS code 381121?

Where can I officially look up HS code 381121 in Czech Republic?