Calcium Arsenate
Title: Calcium Arsenate
CAS Registry Number: 7778-44-1
Additional Names: Tricalcium arsenate
Molecular Formula: As2Ca3O8
Molecular Weight: 398.07
Percent Composition: As 37.64%, Ca 30.20%, O 32.15%
Line Formula: Ca3(AsO4)2
Literature References: Prepn: Les Veaux, US 2715562 (1955 to FMC). Toxicity study: T. B. Gaines, Toxicol. Appl. Pharmacol. 14, 515 (1969). Review: Guerin, Chim. Ind. (Paris) 77, 1288 (1957). Review of toxicology and human exposure: Toxicological Profile for Arsenic (PB2000-108021, 2000) 468 pp.
Properties: Powder. Poisonous! Slightly sol in water; sol in dil acids. LD50 orally in female rats: 298 mg/kg (Gaines).
Toxicity data: LD50 orally in female rats: 298 mg/kg (Gaines)
CAUTION: Potential symptoms of overexposure are weakness; GI disturbance; peripheral neuropathy; skin hyperpigmentation, palmar planter hyperkeratoses; dermatitis. Potential occupational carcinogen. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 46.
Use: Insecticide; molluscicide.

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