Thailand HS Code

HS Code 381111: Antiknock preparations : Based on lead compounds in Thailand

Q: Is HS code 381111 the same across all countries?

Yes — up to the 6-digit level, HS code 381111 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. Thailand extends it under AHTN-TH.

Q: What system does Thailand use to classify HS code 381111?

Thailand classifies products under the ASEAN Harmonized Tariff Nomenclature 2022 — Thai Customs Tariff (AHTN-TH; locally พิกัดอัตราศุลกากร (AHTN 2022)), which extends HS codes to 11 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 381111 in Thailand?

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

What is HS Code 381111 in Thailand

Under Thailand's ASEAN Harmonized Tariff Nomenclature 2022 — Thai Customs Tariff (พิกัดอัตราศุลกากร (AHTN 2022)), HS Code 381111 is the WCO Harmonized System subheading for Antiknock preparations : Based on lead compounds. This is the most detailed internationally standardized level; Thailand extends classifications to 11 digits under its national tariff system. 381111 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 Thailand import export trade data and shipment records for HS Code Leaded Anti-Knock Additives on TradeInt global trade data platform

Classification Path of HS Code 381111 in Thailand

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 381111

Antiknock preparations : Based on lead compounds

HS Code 38111100001

TETRAETHYL LEAD เตตระเอทิลเลด

HS Code 38111100002

TETRAMETHYL LEAD เตตระเมทิลเลด

HS Code 38111100090

OTHER อื่น ๆ

Thailand Tariff Classification: ASEAN Harmonized Tariff Nomenclature 2022 — Thai Customs Tariff (AHTN-TH)

In Thailand, HS 381111 is classified under the ASEAN Harmonized Tariff Nomenclature 2022 — Thai Customs Tariff (พิกัดอัตราศุลกากร (AHTN 2022)) — a 11-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule ASEAN Harmonized Tariff Nomenclature 2022 — Thai Customs Tariff (AHTN-TH)

Local name พิกัดอัตราศุลกากร (AHTN 2022)

Digits 11

Official source https://www.customs.go.th/

You know what 381111 means. Now see 2026 latest real trade activity for Leaded Anti-Knock Additives in Thailand.

Buyers, suppliers, origin and destination countries, shipment dates, and quantities direct from customs records.

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Top Trading Product of HS Code 3811

Top Thailand import Product Under HS Code 3811

1 381121: Additives for lubricating oils : Containing petroleum oils or oils obtained from bituminous minerals $220.2M 2 381190: Other $74.6M 3 381129: Additives for lubricating oils : Other $19.3M

Figures shown for 2025.

For more 2026 recent data, search for Thailand import trade records

Top Thailand export Product Under HS Code 3811

1 381129: Additives for lubricating oils : Other $11.3M 2 381121: Additives for lubricating oils : Containing petroleum oils or oils obtained from bituminous minerals $10.9M 3 381190: Other $6.8M

Figures shown for 2025.

For more 2026 recent data, search for Thailand export trade records

Related HS Code to Thailand Leaded Anti-Knock Additives (381111)

Antiknock preparations : Other

HS Code 381121

Additives for lubricating oils : Containing petroleum oils or oils obtained from bituminous minerals

HS Code 381129

Additives for lubricating oils : Other

Colloidal or semicolloidal graphite

HS Code 380130

Carbonaceous pastes for electrodes and similar pastes for furnace linings

Frequently Asked Questions

What is HS code 381111 in Thailand?

HS code 381111 covers Antiknock preparations : Based on lead compounds in Thailand. It sits in Chapter 38 (Miscellaneous chemical products), Heading 3811 of the Harmonized System, and is classified under AHTN-TH.

Is HS code 381111 the same across all countries?

What system does Thailand use to classify HS code 381111?

Where can I officially look up HS code 381111 in Thailand?