Tetraethyl Lead ((C2H5)4Pb) Posted on 23rd December 20156th May 2021 by ThePD (The Project Definition) Tetraethyl Lead ((C2H5)4Pb) is a toxic organometallic compound that was added to gasoline as an antiknock agent. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Substance and tagged Inorganic, refinery, substance. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.