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.
Inorganic mercury toxicity occurs in several forms: metallic mercury (Hg), mercurous mercury (Hg1+), or mercuric mercury (Hg2+). Found mostly in the mercuric salt form (eg, batteries), inorganic mercury is highly toxic and corrosive.