Tetraethyllead (TEL) Antiknock Additive
Tetraethyllead (TEL) is a classic organolead compound used as an antiknock agent in gasoline engines to prevent engine knocking by increasing octane rating. This prepared additive falls under HTS 3811.11.5000 as it is based on lead compounds and classified as 'other' antiknock preparations for mineral oils like gasoline. It was widely used in leaded gasoline formulations before regulatory phase-outs.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If based on non-lead compounds like MMT
Antiknock preparations not containing lead compounds shift to the general subheading for other antiknock additives.
If imported as part of finished gasoline
When incorporated into petroleum oils rather than as a separate prepared additive, it falls under motor fuel classifications.
If classified as a chemical preparation of unlisted type
Broad chemical mixtures may default to residual chapters if not specifically fitting prepared additives for oils.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify EPA restrictions on lead content and obtain TSCA premanufacture notices for new chemical introductions
• Provide detailed safety data sheets (SDS) and confirm compliance with Clean Air Act import prohibitions on leaded fuels
• Label shipments clearly as hazardous materials under DOT regulations to avoid customs delays
Related Products under HTS 3811.11.50.00
Leaded Octane Booster Concentrate
A concentrated blend containing organolead compounds like tetraethyllead designed to boost octane levels in racing fuels and aviation gasoline. Classified under HTS 3811.11.5000 as 'other' antiknock preparations based on lead for mineral oils. Primarily used in non-road applications where high performance exceeds unleaded limits.
Aviation Leaded Antiknock Mixture
Specialized antiknock preparation with lead compounds for 100LL avgas (low-lead aviation gasoline) to suppress detonation in piston aircraft engines. HTS 3811.11.5000 covers this as 'other' lead-based antiknock for mineral oils used in hydraulic or lubricating purposes akin to gasoline.
High-Performance Leaded Fuel Additive
Lead-based antiknock concentrate for drag racing and classic car fuels, enhancing combustion stability in high-compression engines. Falls under HTS 3811.11.5000 for other lead compound-based antiknock preparations specifically for gasoline-like mineral oils.
Marine Engine Leaded Antiknock
Prepared additive containing lead compounds for two-stroke marine outboard motors using high-octane gasoline blends. HTS 3811.11.5000 applies to these 'other' antiknock preparations for liquids functioning like mineral oils in propulsion systems.