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.
Lead(IV) oxide, also known as lead dioxide, is a chemical compound. It is composed of lead in its +4 oxidation state. It is an oxidizing agent. It is a dark brown toxic powder. It is used in the lead acid battery to oxidize the lead, which generates electricity.