HS Code Subheading

Anti-knock preparations; based on lead compounds

3811.11 Subheading
Section VI — Products of the chemical or allied industries

About HS Code 381111

This HS code specifically covers anti-knock preparations for internal combustion engines that are based on lead compounds. Historically, these additives, primarily tetraethyl lead (TEL), were widely used to increase the octane rating of gasoline, thereby preventing engine knocking and improving engine performance. However, due to severe environmental and health concerns associated with lead emissions, the use of leaded gasoline has been largely phased out globally. Consequently, trade in these products is now extremely limited, primarily confined to niche applications such as aviation fuel for piston-engine aircraft or in a few countries with less stringent environmental regulations. Importers and exporters are highly specialized chemical companies and fuel distributors serving these specific, dwindling markets.

Products Under This Code

Tetraethyl lead (TEL), Tetramethyl lead (TML), Ethyl fluid (TEL blend), Aviation gasoline additive (lead-based), Leaded fuel octane booster

Real World Examples

Octel (historical), Innospec (historical/niche aviation), Ethyl Corporation (historical)

Common Misclassification

This code is distinct from 381119, which covers all other anti-knock preparations not based on lead compounds, reflecting the global shift away from leaded fuels.

Products Classified Under 3811.11

Industry

This code belongs to the Chemicals industry.

Trade Overview

Trade is minimal, but some specialized aviation fuel producers in the USA and Europe might still be involved for specific applications.

Frequently Asked Questions

What is HS code 381111?

HS code 381111 covers: Anti-knock preparations; based on lead compounds. This HS code specifically covers anti-knock preparations for internal combustion engines that are based on lead compounds. Historically, these additives, primarily tetraethyl lead (TEL), were widely used to increase the octane rating of gasoline, thereby preventing engine knocking and improving engine performance. However, due to severe environmental and health concerns associated with lead emissions, the use of leaded gasoline has been largely phased out globally. Consequently, trade in these products is now extremely limited, primarily confined to niche applications such as aviation fuel for piston-engine aircraft or in a few countries with less stringent environmental regulations. Importers and exporters are highly specialized chemical companies and fuel distributors serving these specific, dwindling markets.

What products fall under HS code 381111?

Tetraethyl lead (TEL), Tetramethyl lead (TML), Ethyl fluid (TEL blend), Aviation gasoline additive (lead-based), Leaded fuel octane booster

What are common misclassifications for HS code 381111?

This code is distinct from 381119, which covers all other anti-knock preparations not based on lead compounds, reflecting the global shift away from leaded fuels.

How is HS code 381111 structured?

HS code 381111 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 (11) specify the subheading. This code is standardized globally by the World Customs Organization.