calcium arsenite

calcium arsenite

[′kal·sē·əm ′ärs·ən‚īt]
(inorganic chemistry)
Ca3(AsO3)2 White granules that are soluble in water; used as an insecticide.
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The commercially practiced processes for chemical fixation of arsenic includes the precipitation of calcium arsenite or arsenate, arsenic sulfide ([As.sub.2][S.sub.3]) arsenical ferrihydrite and crystalline scorodite.
But it is no longer considered acceptable in terms of the high As solubility and the environmental instability of the produced calcium arsenite or arsenate sludge.