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| CAS No.: | 7778-43-0 |
|---|---|
| Name: | SODIUM ARSENATE |
| Molecular Structure: | |
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| Formula: | AsH3 O4 . 2 Na |
| Molecular Weight: | 312.01 |
| Synonyms: | Arsenicacid (H3AsO4), disodium salt (8CI,9CI); Disodium arsenate; Disodium hydrogenarsenate; Disodium hydrogen orthoarsenate; Disodium monohydrogen arsenate;Hydrogen sodium arsenate (HNa2AsO4); Sodium arsenate (Na2HAsO4); Sodiumarsenate dibasic; Sodium biarsenate |
| Density: | 1.752 |
| Melting Point: | 86.3ºC |
| Boiling Point: | decomp at 150°C |
| 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] |
| Hazard Symbols: | Toxic by ingestion and inhalation. |
| Safety: | Confirmed human carcinogen. Poison by intraperitoneal route. Human mutation data reported. When heated to decomposition it emits toxic fumes of arsenic. See ARSENIC COMPOUNDS. |
| PSA: | 77.76000 |
| LogP: | -2.17060 |
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Chemistry
IUPAC Name: disodium hydrogen arsorate
Molecular Weight: 185.90668 g/mol
Molecular Formula: AsHNa2O4
EINECS: 231-902-4
Product Categories: Inorganics
H-Bond Donor: 1
H-Bond Acceptor: 4
Exact Mass: 185.888619
MonoIsotopic Mass: 185.888619
Topological Polar Surface Area: 83.4
Heavy Atom Count: 7
Complexity: 46.5
Canonical SMILES: O[As](=O)([O-])[O-].[Na+].[Na+]
InChI: InChI=1S/AsH3O4.2Na/c2-1(3,4)5;;/h(H3,2,3,4,5);;/q;2*+1/p-2
InChIKey: IHZDYHDJAVUIBH-UHFFFAOYSA-L
Synonyms of Arsenic acid, disodium salt (CAS NO.7778-43-0) : Arsenicacid(H3AsO4), disodiumsalt ; Asenicacid,disodiumsalt ; Disodiumarsenate ; Disodiumarsenicacid
Uses
Arsenic acid, disodium salt (CAS NO.7778-43-0) is used to be analytical reagent for iron and steel. It is also used in pharmaceuticals, reagents, and electronics.
Toxicity Data With Reference
| 1. | cyt-hmn:leu 7200 µmol/L | MUREAV Mutation Research. 88 (1981),73. | ||
| 2. | mrc-bcs 100 mmol/L | MUREAV Mutation Research. 77 (1980),109. | ||
| 3. | ipr-rat LDLo:34,720 µg/kg | JPETAB Journal of Pharmacology and Experimental Therapeutics. 58 (1936),454. |
Consensus Reports
Reported in EPA TSCA Inventory. Arsenic and its compounds are on the Community Right-To-Know List.
Safety Profile
Confirmed human carcinogen. Poison by intraperitoneal route. Human mutation data reported. When heated to decomposition it emits toxic fumes of arsenic. See ARSENIC COMPOUNDS.
RIDADR: 1685
HazardClass: 6.1(a)
PackingGroup: II
Standards and Recommendations
OSHA PEL: TWA 0.5 mg(As)/m3; Cancer Hazard
ACGIH TLV: TWA 0.01 mg/m3; Confirmed Human Carcinogen; BEI: 35 μ (As)/L inorganic arsenic and methylated metabolites in urine
NIOSH REL: (Arsenic, Inorganic) CL 2 µg(As)/m3/15 M
DFG MAK: Human Carcinogen
Specification
Arsenic acid, disodium salt (CAS NO.7778-43-0) is high toxic. It is incombustible material. Arsenic acid, disodium salt (CAS NO.7778-43-0) will release toxic arsenide vapor by heat. So the storage environment should be ventilate, low-temperature and dry. Keep separate from alkali, acid, food additives.