Dinatriumhydrogenarsenat

Bezeichnung:Dinatriumhydrogenarsenat

CAS-Nr7778-43-0

Englisch Name:SODIUM ARSENATE

CBNumberCB8359652

SummenformelAsHNa2O4

Molgewicht185.91

MOL-Datei7778-43-0.mol

Synonyma

Dinatriumhydrogenarsenat

Arsens?ure Dinatriumsalz

Dinatriumarsenat

Dinatriumhydrogenarsenat physikalisch-chemischer Eigenschaften

Schmelzpunkt	86℃ [HAW93]
Siedepunkt	decomp at 150°C
Dichte	1.7539 [HAW93]
Löslichkeit	soluble in H2O; slightly soluble in ethanol; insoluble in ethyl ether
Farbe	Colorless white powder or solid, effloresces
Wasserlöslichkeit	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 chemische Informationen	Arsenic acid (H3AsO4), disodium salt (7778-43-0)

Sicherheit

RIDADR	1685
HazardClass	6.1(a)
PackingGroup	II
HS Code	28429090
Giftige Stoffe Daten	7778-43-0(Hazardous Substances Data)
Toxizität	cyt-hmn:leu 7200 mmol/L MUREAV 88,73,81

Gefahreninformationscode (GHS)

SODIUM ARSENATE Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSE BIS WEISSE KRISTALLE ODER PULVER.
CHEMISCHE GEFAHREN
Beim Erhitzen bilden sich giftige Rauche. Reagiert mit Säuren unter Freisetzung von giftigem Arsingas (s. ICSC 0222). Greift viele Metalle wie Eisen, Aluminium und Zink in Gegenwart von Wasser an unter Freisetzung giftiger Rauche mit Arsen und Arsin.
ARBEITSPLATZGRENZWERTE
TLV (als As): 0,01 mg/m?(als TWA); Krebskategorie A1 (bestätigte krebserzeugende Wirkung beim Menschen); BEI vorhanden; (ACGIH 2005).
MAK: Krebserzeugend Kategorie 1; Keimzellmutagen Kategorie 3A; (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation des Aerosols und durch Verschlucken.
INHALATIONSGEFAHREN
Verdampfung bei 20°C vernachlässigbar; eine gesundheitsschädliche Partikelkonzentration in der Luft kann jedoch beim Dispergieren schnell erreicht werden.
LECKAGE
Verschüttetes Material aufsaugen. Reste sorgfältig sammeln. An sicheren Ort bringen. Chemikalienschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät. NICHT in die Umwelt gelangen lassen.
Chemische Eigenschaften
White crystalline, odorless solids.
Chemische Eigenschaften
Arsenic acid disodium salt is not combustible. It emits irritating or toxic fumes or gases in a fi re.
Chemische Eigenschaften
Sodium 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.
Chemische Eigenschaften
Clear, colorless crystals; mild alkaline taste. Soluble in water; slightly soluble in alcohol and glycerol; insoluble in ether.
Verwenden
Mordant and assist in dyeing and printing, other arsenates, germicide.
synthetische
Sodium arsenate is obtained by roasting a mixture of arsenic oxide with sodium carbon ate and sodium nitrate in the presence of air.In addition, this compound can be easily obtained by calcining sodium arsenate(III) in the pres ence of air.
Definition
ChEBI: An inorganic sodium salt composed from sodium cations and arsenate dianions in a 2:1 ratio.
Hazard
Toxic by ingestion and inhalation.
Health Hazard
Exposures 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 Hazard
Inorganic 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.
Kontakt-Allergie
Arsenic 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.
Sicherheitsprofil
Confirmed human carcinogen. Poison by intraperitoneal route. Human mutation data reported. When heated to decomposition it emits toxic fumes of arsenic. See ARSENIC COMPOUNDS.
mögliche Exposition
Sodium arsenate is used in dyeing and printing; making other arsenates; as a germicide; in dyeing with turkey-red oil.
Lager
It 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.
Vorsichtsmaßnahmen
During 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.

Dinatriumhydrogenarsenat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

7778-43-0, SODIUM ARSENATE Verwandte Suche:

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