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| CAS No.: | 7784-46-5 |
|---|---|
| Name: | Sodium m-arsenite |
| Molecular Structure: | |
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|
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| Formula: | AsH O2 . Na |
| Molecular Weight: | 129.91 |
| Synonyms: | Arsenenousacid, sodium salt (9CI); Sodium arsenite (NaAsO2) (6CI,7CI); Arsenic sodiumoxide (AsNaO2); Arsenite sodium; Sodium arsenic oxide (NaAsO2); Sodiumarsenite; Sodium metaarsenite |
| EINECS: | 231-148-6 |
| Density: | 5.727 g/mL at 25 °C(lit.) |
| Melting Point: |
817 °C(lit.) |
| Boiling Point: |
613 °C(lit.) |
| Solubility: | Miscible with water. Slightly miscible with alcohol. |
| Appearance: | white granular crystals |
| Hazard Symbols: | Toxic by ingestion and inhalation. |
| Risk Codes: | R23/25; R50/53; R51/53; R45; R52/53; R22 |
| Safety: | Confirmed human carcinogen. Human poison by ingestion. Experimental poison by ingestion, skin contact, intravenous, intramuscular, and intraperitoneal routes. An experimental teratogen. Experimental reproductive effects. Human mutation data reported. Used as an herbicide and pesticide. When heated to decomposition it emits toxic fumes of arsenic and Na2O. See also ARSENIC COMPOUNDS. |
| PSA: | 40.13000 |
| LogP: | -0.50590 |
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Chemistry
IUPAC Name: Disodium (2S)-2-aminobutanedioate
Synonyms: Arsenite de sodium ; Arsenite, sodium ; Sodium arsenite ; Sodium meta-arsenite ; Trinatriumarsenit ; Trisodium arsenite ; Arsenious acid, sodium salt ; Arsenous acid, trisodium salt
The Molecular Formula of Sodium arsenite (CAS NO.7784-46-5):AsNaO2
The Molecular Weight of Sodium arsenite (CAS NO.7784-46-5):129.910170 g/mol
The Molecular Structure of Sodium arsenite (CAS NO.7784-46-5):
Appearance:off-white to gray
Solubility: H2O: 10%, turbid
Polar Surface Area: 60.69Å2
Melting Point: 817 °C(lit.)
Density: 5.727 g/mL at 25 °C(lit.)
Boiling Point: 613 °C(lit.)
Flash Point:
Solubility in water: soluble
Refractive Index (nD):
Appearance:color off-white to gray
Stability: Stable. Incompatible with strong oxidizing agents, strong acids. Protect from moisture. Absorbs carbon dioxide from air.
Polarizability: 10-24cm3
Uses
Sodium arsenite ,whose Cas Register Number is 7784-46-5,can be used as enzyme inhibitor.
Toxicity Data With Reference
| 1. | dnr-esc 63 µg/well | ENMUDM Environmental Mutagenesis. 3 (1981),429. | ||
| 2. | mmo-smc 100 mmol/L | MUREAV Mutation Research. 117 (1983),149. | ||
| 3. | oms-hmn:lym 700 nmol/L | SWEHDO Scandinavian Journal of Work, Environment and Health. 7 (1981),277. | ||
| 4. | cyt-hmn:lym 1 mg/L | ENMUDM Environmental Mutagenesis. 3 (1981),597. | ||
| 5. | orl-cld TDLo:1 mg/kg | CTOXAO Clinical Toxicology. 10 (1977),477. | ||
| 6. | orl-cld LDLo:2 mg/kg | CTOXAO Clinical Toxicology. 10 (1977),477. | ||
| 7. | orl-rat LD50:41 mg/kg | AIHAAP American Industrial Hygiene Association Journal. 30 (1969),470. | ||
| 8. | skn-rat LD50:150 mg/kg | PHJOAV Pharmaceutical Journal. 185 (1960),361. | ||
| 9. | ipr-rat LDLo:7 mg/kg | JPETAB Journal of Pharmacology and Experimental Therapeutics. 58 (1936),454. | ||
| 10. | ivn-rat LDLo:6 mg/kg | JPETAB Journal of Pharmacology and Experimental Therapeutics. 33 (1928),270. | ||
| 11. | ipr-mus L |
Consensus Reports
IARC Cancer Review: Group 1 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 100.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 23 ,1980,p. 39.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Sufficient Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 23 ,1980,p. 39.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal No Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 2 ,1973,p. 48.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Arsenic and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program. EPA Extremely Hazardous Substances List.
Safety Profile
Confirmed human carcinogen. Human poison by ingestion. Experimental poison by ingestion, skin contact, intravenous, intramuscular, and intraperitoneal routes. An experimental teratogen. Experimental reproductive effects. Human mutation data reported. Used as an herbicide and pesticide. When heated to decomposition it emits toxic fumes of arsenic and Na2O. See also ARSENIC COMPOUNDS.
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: 53-20/21-28-45-60-61
S53:Avoid exposure - obtain special instructions before use.
S20:When using, do not eat or drink.
S21:When using do not smoke.
S28:After contact with skin, wash immediately with plenty of soap-suds.
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 2027 6.1/PG 2
WGK Germany: 3
RTECS: CG3675000
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: (Inorganic Arsenic) CL 0.002 mg(As)/m3/15M
DOT Classification: 6.1; Label: Poison, KEEP AWAY FROM FOOD (UN 1686)