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In page Tetraethyllead:

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In most industrialized countries, a phaseout of TEL from road vehicle fuels was completed by the early 2000s because of concerns over air and soil lead levels and the accumulative neurotoxicity of lead. In the European Union, tetraethyllead has been classified as a Substance of Very High Concern and placed on the Candidate List for Authorization under Registration, Evaluation, Authorization and Restriction of Chemicals (REACH).[1] Potential use of TEL would need to be authorized through the REACH authorization procedure. While not a complete ban, it introduces significant obligations such as a mandatory analysis of alternatives and socioeconomic analysis.[citation needed]