1 paroxysmal Pertaining to or marked by paroxysm; caused by paroxysms or convulsions of nature. 2  paroxysmal Specifically In geology: Relating to or produced by a violent convulsion of nature.
Inorganic lead compounds are Group 2A - Probably carcinogenic to humans. American Conference for Governmental Industrial Hygienists (ACGIH): A3 - Confirmed animal carcinogen. Teratogenicity / Embryotoxicity: DEVELOPMENTAL HAZARD. May harm the unborn child. Known to cause: learning disabilities, effects on behaviour.
2 H. ). Pb, viscous, colorless, poisonous liquid. It is an organometallic compound prepared by reacting ethyl chloride with a sodium-lead alloy. When added to gasoline, it improves the combustion characteristics (see octane number). When tetraethyl lead burns in an engine, lead oxide is formed.ore on tetraethyl lead from Infoplease: 1  ethyl: meaning and definitions-ethyl: Definition and Pronunciation. 2  organometallic chemistry-organometallic chemistry organometallic chemistry, the reactions and use of a class of compounds ...