SODIUM ARSENATE

SODIUM ARSENATE Basic information
Product Name:SODIUM ARSENATE
Synonyms:arsenicacid(h3aso4),disodiumsalt;Arsenicacid(H3AsO4)disodiumsalt;arsenicacid,disodiumsalt;Asenicacid,disodiumsalt;disodiumarsenate;disodiumarsenicacid;Disodiumhydrogenarsenate;disodiumhydrogenorthoarsenate
CAS:7778-43-0
MF:AsHNa2O4
MW:185.91
EINECS:231-902-4
Product Categories:Inorganics
Mol File:7778-43-0.mol
SODIUM ARSENATE Structure
SODIUM ARSENATE Chemical Properties
Melting point 86℃ [HAW93]
Boiling point decomp at 150°C
density 1.7539 [HAW93]
color Colorless white powder or solid, effloresces
Water Solubility g/100g solution H2O: 5.59 (0.1°C), 29.33 (25°C), 66.5 (98.5°C); solid phase, Na2HAsO4 ·12H2O (0.1°C), Na2HAsO4 ·7H2O (25°C), Na2HAsO4(98.5°C) [KRU93]; slightly soluble alcohol [MER06]
EPA Substance Registry SystemArsenic acid (H3AsO4), disodium salt (7778-43-0)
Safety Information
RIDADR 1685
HazardClass 6.1(a)
PackingGroup II
HS Code 28429090
Hazardous Substances Data7778-43-0(Hazardous Substances Data)
Toxicitycyt-hmn:leu 7200 mmol/L MUREAV 88,73,81
MSDS Information
SODIUM ARSENATE Usage And Synthesis
Chemical PropertiesArsenic acid disodium salt is not combustible. It emits irritating or toxic fumes or gases in a fi re.
Chemical PropertiesSodium arsenate is currently registered for use as ant bait. These baits are used in approximately 1% of US homes. Sodium arsenate is a pentavalent form of inorganic arsenic. It is a heptahydrate that normally exists as colorless crystals with no discernible odor. Sodium arsenate contains 24% arsenic.
Chemical PropertiesClear, colorless crystals; mild alkaline taste. Soluble in water; slightly soluble in alcohol and glycerol; insoluble in ether.
Chemical PropertiesWhite crystalline, odorless solids.
UsesMordant and assist in dyeing and printing, other arsenates, germicide.
DefinitionChEBI: An inorganic sodium salt composed from sodium cations and arsenate dianions in a 2:1 ratio.
HazardToxic by ingestion and inhalation.
Health HazardExposures to arsenic acid disodium salt cause adverse health effects. The symptoms of poisoning include, but are not limited to, cough, headache, sore throat, weakness, respiratory distress, labored breathing, irritation to the eyes, and skin, dermatitis, mucous membranes, the respiratory tract, and pigmentation disorders. Repeated or prolonged contact with arsenic acid disodium salt causes cardiovascular disorders affects the nervous system, neuropathy, and kidneys, resulting in severe gastroenteritis, loss of fl uids and electrolytes, kidney impairment, collapse, shock, and death.
Health HazardInorganic arsenical compounds have been classifi ed as Class A oncogenes, demonstrating positive oncogenic effects based on suffi cient human epidemiological evidence. Inorganic arsenicals are known to be acutely toxic. The symptoms that follow oral exposure include severe gastrointestinal damage resulting in vomiting and diarrhea, and general vascular collapse leading to shock, coma, and death. Muscular cramps, facial edema, and cardiovascular reactions are also known to occur following oral exposure to arsenic.
On ingestion, organic arsenic compounds cause severe health effects, including burning lips, throat constriction, abdominal pain, dysphagia, nausea, vomiting, diarrhea, convulsions, coma, and death. Irritation of the respiratory tract, skin, and eyes may result from inhalation exposures. Chronic exposure to organic arsenic compounds may result in dermatitis, anemia, leukocytopenia, or the effects associated with several forms of cancer.
Contact allergensArsenic salts are sensitizers, but most often irritants. They are used in copper or gold extraction, glass, feeds, weedkillers, insecticides, and ceramics. A recent case was reported in a crystal factory worker with positive patch tests to sodium arsenate.
Safety ProfileConfirmed human carcinogen. Poison by intraperitoneal route. Human mutation data reported. When heated to decomposition it emits toxic fumes of arsenic. See ARSENIC COMPOUNDS.
Potential ExposureSodium arsenate is used in dyeing and printing; making other arsenates; as a germicide; in dyeing with turkey-red oil.
storageIt is important to keep stored organic arsenic compounds in a cool, dry, well-ventilated area in tightly sealed containers and with proper labels and identifi cation. The storage containers of organic arsenic compounds should be protected from physical damage and stored separately from oxidizers such as perchlorates, peroxides, permanganates, chlorates, or nitrates, and strong acids such as hydrochloric, sulfuric, or nitric acid. Further, specifi c organic arsenic compounds must have separate storage requirements, which should be evaluated prior to storage.
PrecautionsDuring handling and use of arsenic compounds, workers should use appropriate personal protective clothing and equipment. Users/workers must be careful during use, and maintain effective measures to prevent skin contact with organic arsenic compounds. The selection of the appropriate personal protective equipment (PPE), such as gloves, sleeves, and encapsulating suits should be based on the extent of the worker’s potential exposure to organic arsenic compounds. The users and the management should periodically evaluate and determine the effectiveness of the chemical-resistant clothing in preventing dermal contact and ensuring users’ safety.
SODIUM ARSENATE Preparation Products And Raw materials
C. I. Pigment White 16 (77625) TRISODIUMARSENATEHEPTAHYDRATE SODIUM ARSENATE, HEPTAHYDRATE Sodium pyroarsenate SODIUM ARSENATE trisodium arsenate

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