REACH
In the European Union, tetraethyllead has been classified as a Substance of Very High Concern and placed on the Candidate List for Authorisation under Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH). Potential use of TEL would need to be authorised through the REACH authorisation procedure. While not a complete ban, it introduces significant obligations such as a mandatory analysis of alternatives and socioeconomic analysis.