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| CAS No.: | 10048-95-0 |
|---|---|
| Name: | SODIUM ARSENATE, HEPTAHYDRATE |
| Molecular Structure: | |
|
|
|
| Formula: | AsH3 O4 . 7 H2 O . 2 Na |
| Molecular Weight: | 427.05 |
| Synonyms: | Arsenicacid (H3AsO4), disodium salt, heptahydrate (8CI,9CI); Dibasic sodium arsenate(Na2HAsO4.7H2O); Disodium acid arsenate heptahydrate (Na2HAsO4.7H2O); Disodiumarsenate heptahydrate; Disodium hydrogen arsenate (Na2HAsO4) heptahydrate;Disodium monohydrogen arsenate heptahydrate; Hydrogen disodium arsenate(HNa2AsO4) heptahydrate; Sodium acid arsenate, heptahydrate; Sodium arsenate(Na2HAsO4) heptahydrate; Sodium arsenate heptahydrate; Sodium arsenate hydrate(Na2HAsO4.7H2O); Sodium hydrogen arsenate (Na2HAsO4) heptahydrate |
| EINECS: | 231-902-4 |
| Density: | g/cm3 |
| Melting Point: |
180 °C (dec.)(lit.) |
| Boiling Point: | °Cat760mmHg |
| Flash Point: | °C |
| Solubility: | appreciable |
| Appearance: | white or colourless crystals |
| Hazard Symbols: | 3 |
| Risk Codes: | 45-23/25-50/53 |
| Safety: | Confirmed human carcinogen. Poison by subcutaneous route. An experimental teratogen. Other experimental reproductive effects. Human mutation data reported. See also ARSENIC COMPOUNDS. When heated to decomposition it emits toxic fumes of arsenic. |
| PSA: | 148.03000 |
| LogP: | -1.74430 |
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Chemistry
IUPAC Name: disodium hydrogen arsorate heptahydrate
Molecular Weight: 312.01364 g/mol
Molecular Formula: AsH15Na2O11
Melting Point: 180 °C (dec.)(lit.)
Density: 1.88 g/cm3
Water Stability: Water soluble
Appreance: white or colourless crystals
H-Bond Donor: 8
H-Bond Acceptor: 11
Exact Mass: 311.962572
MonoIsotopic Mass: 311.962572
Topological Polar Surface Area: 90.4
Heavy Atom Count: 14
Complexity: 46.5
InChIKey: KOLXPEJIBITWIQ-UHFFFAOYSA-L
Synonyms Arsenic acid, disodium salt, hepta hydrate (CAS NO.10048-95-0) : Arsenicacid(H3AsO4) disodiumsalt , heptahydrate ; Arsenicacid , disodiumsalt , heptahydrate ; Dibasicsodiumarsenate ; Dibasicsodiumarsenateheptahydrate ; Disodiumarsenate , heptahydrate ; di-Sodiumhydrogenarsenate , he ; Sodiumacidarsenate , heptahydrate ; Sodiumarseniate
Toxicity Data With Reference
| 1. | cyt-dmg-orl 454 ppm | SOGEBZ Soviet Genetics. Translation of GNKAA5. 10 (1974),608. | ||
| 2. | otr-hmn:fbr 2500 nmol/L | CNREA8 Cancer Research. 47 (1987),3815. | ||
| 3. | cyt-hmn:leu 7200 nmol/L | MUREAV Mutation Research. 88 (1981),73. | ||
| 4. | ims-mus LD50:87,360 µg/kg | EXMDA4 International Congress Series - Excerpta Medica.(440),(1978),312. | ||
| 5. | scu-gpg LDLo:50 mg/kg | BMJOAE British Medical Journal. 2 (1913),217. |
Consensus Reports
Arsenic and its compounds are on the Community Right-To-Know List.
Safety Profile
Confirmed human carcinogen. Poison by subcutaneous route. An experimental teratogen. Other experimental reproductive effects. Human mutation data reported. See also ARSENIC COMPOUNDS. When heated to decomposition it emits toxic fumes of arsenic.
Hazard Codes: 
T, 
N
Risk Statements: 45-23/25-50/53
R45: May cause cancer
R23/25: Toxic by inhalation and if swallowed
R50/53: Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety Statements: 53-45-60-61
S53: Avoid exposure - obtain special instructions before use
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible)
S60: This material and its container must be disposed of as hazardous waste
S61: Avoid release to the environment. Refer to special instructions / safety data sheets
RIDADR: UN 1685 6.1/PG 2
WGK Germany: 3
RTECS: CG0900000
HazardClass: 6.1
PackingGroup: II
Standards and Recommendations
OSHA PEL: TWA 0.01 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, hepta hydrate (CAS NO.10048-95-0) is a kind of odorless white crystals. It will becomes anhydrous at 212 °F. The aqueous solution is alkaline to litmus. It is incompatible with strong reducing agents, strong oxidizing agents and strong acids. It is also incompatible with iron, aluminium and zinc in the presence of water. Literature sources indicate that Arsenic acid, disodium salt, hepta hydrate (CAS NO.10048-95-0) is nonflammable. Arsenic acid, disodium salt, hepta hydrate (CAS NO.10048-95-0) is high toxic. It is flammable. It will produce toxic fumes when buring. So the storage environment should be ventilate, low-temperature and dry. Keep it separate from raw materials of food. It may be fatal if swallowed or inhaled.