Tetraethyllead

Tetraethyllead (commonly styled tetraethyl lead), shortened to TEL, is a chemical compound with the formula (CH₃CH₂)₄Pb. They added this into petro-fuel. It was first mixed with gasoline in the 1920s. It increased vehicle performance and fuel economy by stopping engine knocking.^[1]^[2] TEL had been identified chemically in the mid-19th century. In recent years, this chemical has been linked to climate change and is highly toxic.^[3] It is no longer used in fuels because of this (most are now "unleaded").

References

↑ "Tetra-Ethyl Lead as an Addition to Petrol". British Medical Journal. 1 (3504): 366–7. 3 March 1928. doi:10.1136/bmj.1.3504.366. PMC 2455205. PMID 20773729.
↑ "After Lead?", Popular Science (October 1987 ed.), Bonnier Corporation, p. 94, October 1987
↑ "TETRAETHYL LEAD - National Library of Medicine HSDB Database".

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[BMJ1928-1] "Tetra-Ethyl Lead as an Addition to Petrol". British Medical Journal. 1 (3504): 366–7. 3 March 1928. doi:10.1136/bmj.1.3504.366. PMC 2455205. PMID 20773729.

[2] "After Lead?", Popular Science (October 1987 ed.), Bonnier Corporation, p. 94, October 1987

[3] "TETRAETHYL LEAD - National Library of Medicine HSDB Database".

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