Арсенат кальция

398.07200

397.69000

233-287-8

95OX15I8ZU

0765

1573

DTXSID6058182

White powder|Colorless to white solid.

28429090

172.50000

-1.71200

Calcium arsenate is a white powder. Slightly soluble in water. Toxic by inhalation and ingestion. Used as an insecticide and germicide.

3.620 g/cm³

1455 °C

Decomposes

It is soluble in water and acids, insoluble in organic solvents

Protect container against physical damage. Store in well ventilated area away from food or food products and combustible materials. /Inorganic arsenic cmpd/

0 mmHg (approx)

LD50 orally in female rats: 298 mg/kg (Gaines)

Odorless

Decomp on heating

Slightly soluble in water.

Salts, Basic

Has only weak oxidizing power but redox reactions can still occur. Soluble in dilute acids. [Hawley]. Produces toxic fumes of arsenic when heated to decomposition (NIOSH, 2016). Reacts with acids to produce toxic arsine gas [International Chemical Safety Card 0765].

Slight corrosive action on metals

II

6.1

1573

23/25-45-50/53

S45-S53

T, N

Separated from acids and food and feedstuffs. Well closed. Store in an area without drain or sewer access.

Moisture and carbon dioxide cause slow decomp to calcium carbonate and (phytotoxic) dicalcium hydrogen arsenate. In the presence of acids, water sol, strongly phytotoxic arsenic acid is produced.

P201, P202, P260, P264, P270, P280, P281, P301+P310, P305+P351+P338, P307+P311, P308+P313, P314, P321, P330, P337+P313, P405, P501

H301

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.|Recycling: Dissolve in a minimum amt of concentrated hydrochloric acid. Add to water until the appearance of white precipitate. Add 6 M-HCl /6 M-hydrochloric acid/ just to dissolve again. Saturate with hydrogen sulfide. After filtration, wash the precipitate and return to suppliers. Recommendable methods: Chemical treatment, solidification /hazardous waste/, landfill. Not recommendable methods: Thermal destruction, discharge to sewer.|Dissolve in HCl, precipitate as sulfide using H2S, dry, and return to supplier.|Chemical Treatability of Arsenic; Concentration Process: Chemical Precipitation; Chemical Classification: Metal; Scale of Study: Pilot Scale; Type of Wastewater Used: Domestic Wastewater + Pure Compound; Results of Study: 5ppm @ 4gpm @ pH= 7.0. Iron system-90% reduction; low lime system-80% reduction; high lime system-76% reduction; (3 coagulant systems were used; Iron system used 45 ppm as Fe of Fe2(SO4)3 @ pH= 6.0. Low lime system used 20 ppm Fe of Fe2(SO4)3 and 260 ppm of CaO @ pH= 10.0. High lime system used 600 ppm of CaO @ pH= 11.5. Chemical coagulation was followed by multimedia filtration). /Arsenic cmpd/|For more Disposal Methods (Complete) data for CALCIUM ARSENATE (6 total), please visit the HSDB record page.

... WHEN WATER SOLN OF ARSENICALS ARE IN CONTACT WITH ACTIVE METALS SUCH AS ARSENIC, IRON, ALUMINUM, ZINC, ... HIGHLY TOXIC FUMES OF ARSENIC /INCLUDING ARSINE ARE RELEASED/. /ARSENIC CMPD/|Strong oxidizers, bromide azide [Note: Hydrogen gas can react with inorganic arsenic to form the highly toxic gas arsine.] /Arsenic (inorganic compounds, as As)/

DHHS/ATSDR; Toxicological Profile for Arsenic p. 50 (2000). The ATSDR toxicological profile identifies and reviews the key literature that describes a hazardous substance's toxicologic properties. Other pertinent literature is presented in less d