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10124-50-2

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Basic Information
CAS No.: 10124-50-2
Name: POTASSIUM ARSENITE
Molecular Structure:
Molecular Structure of 10124-50-2 (POTASSIUM ARSENITE)
Formula: AsH3 O3 . x K
Molecular Weight: 399.65
Synonyms: Arseniousacid (H3AsO3), potassium salt (8CI); Arsenous acid, potassium salt; NSC 3060;Potassium arsenite; Potassium arsonate
Density: g/cm3
Melting Point: 300℃ (decomposes)
Boiling Point: °Cat760mmHg
Flash Point: °C
Solubility: miscible
Hazard Symbols: Toxic by ingestion and inhalation, strong irritant.
Safety: Confirmed human carcinogen producing skin and liver tumors. Poison by ingestion, skin contact, subcutaneous, and intravenous routes. Human mutation data reported. Human systemic effects: dermatitis, liver changes. When heated to decomposition it emits toxic fumes of As and K2O. Used in veterinary medicine and for chronic dermatitis in humans. See also ARSENIC COMPOUNDS.
PSA: 69.18000
LogP: -0.73720
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Chemistry

MF: AsKO2
MW: 146.02
EINECS: 233-337-9
Appearance: White hygroscopic powder
Air & Water Reactions: Soluble in water. Decomposes slowly in air.
Synonyms: Potassium arsonate ; potassium arsonate ; Kaliumarsenit ; Arsenous acid tripotassium salt ; Arsonic acid/potassium,(1:x) salt
Following is the molecular structure of Potassium arsonate (10124-50-2):

Uses

Potassium arsenite (10124-50-2) is the compound which forms the basis of Fowler's solution and is used as a specific rodenticide.

Production

Reactivity Profile: Salts, basic, such as Potassium arsonate (10124-50-2), are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Fire may produce irritating or poisonous gases. Unstable. Avoid aeration.

Toxicity Data With Reference

1.    

cyt-hmn:leu 1 µmol/L/48H

    CNREA8    Cancer Research. 25 (1965),980.
2.    

orl-man TDLo:214 mg/kg/15Y-C:CAR,LIV

    GASTAB    Gastroenterology. 68 (1975),1582.
3.    

orl-man TD:7560 mg/kg/26W-C:CAR,SKN

    ANSUA5    Annals of Surgery. 99 (1934),348.
4.    

orl-man TD:441 mg/kg/3W-C:CAR,SKN

    ANSUA5    Annals of Surgery. 99 (1934),348.
5.    

orl-chd TD:390 mg/kg/3Y-C:CAR,SKN

    AIMEAS    Annals of Internal Medicine. 61 (1964),296.
6.    

orl-hmn TDLo:74 mg/kg:LIV,SKN

    LANCAO    Lancet. 1 (1953),269.
7.    

orl-rat LD50:14 mg/kg

    AFDOAQ    Association of Food and Drug Officials of the United States, Quarterly Bulletin. 15 (1951),122.
8.    

skn-rat LD50:150 mg/kg

    PHJOAV    Pharmaceutical Journal. 185 (1960),361.
9.    

scu-mus LDLo:16 mg/kg

    HBAMAK    Abdernaldens Handbuch der Biologischen Arbeitsmethoden. 4 (1935),1307.
10.    

orl-dog LDLo:3 mg/kg

    HBAMAK    Abdernaldens Handbuch der Biologischen Arbeitsmethoden. 4 (1935),1307.
11.  &nbs

Consensus Reports

NTP 10th Report on Carcinogens. IARC Cancer Review: 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 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) ; 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. EPA Extremely Hazardous Substances List.

Safety Profile

Confirmed human carcinogen producing skin and liver tumors. Poison by ingestion, skin contact, subcutaneous, and intravenous routes. Human mutation data reported. Human systemic effects: dermatitis, liver changes. When heated to decomposition it emits toxic fumes of As and K2O. Used in veterinary medicine and for chronic dermatitis in humans.
 

Standards and Recommendations

OSHA PEL: TWA 0.01 mg(As)/m3; Cancer Hazard
ACGIH TLV: BEI: 35 µ (As)/L inorganic arsenic and methylated metabolites in urine
NIOSH REL: CL (Inorganic Arsenic) 0.002 mg(As)/m3/15M
DOT Classification:  6.1; Label: Poison