POTASSIUM ARSENATE
Synonym(s):Arsenic acid potassium salt;Potassium dihydrogen arsenate
- CAS NO.：7784-41-0
- Empirical Formula: AsH2KO4
- Molecular Weight: 180.03
- MDL number: MFCD00036296
- EINECS: 232-065-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-12-31 14:38:37
What is POTASSIUM ARSENATE?
Chemical properties
Colorless crystals. Soluble in water; insoluble in alcohol.
Chemical properties
Potassium arsenate is a colorless to white crystalline solid.
The Uses of POTASSIUM ARSENATE
In the textile, tanning, and paper industries. In insecticidal formulations (especially fly paper).
Preparation
Monopotassium arsenate(V) is prepared by calcining a mixture of equal parts of arsenic oxide and potassium nitrate in cast-iron cylinders, leach ing the melt with water, and concentrating the solution with arsenic acid. It forms white crystal crusts.
Hazard
Toxic by ingestion and inhalation, strong irritant.
Safety Profile
Confirmed human carcinogen. Mutation data reported. When heated to decomposition it emits toxic fumes of arsenic. See also ARSENIC COMPOUNDS.
Potential Exposure
Potassium arsenate is used in the textile, tanning, preserving hides; in the textile printing and paper industries; and as an insecticide in fly baits, especially for fly paper; as laboratory reagent.
Shipping
UN1677 Potassium arsenate, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
Incompatibilities
A weak base. Reacts with strong oxidizers, bromine azide, acids and decomposes on contact with strong acids producing acetic acid fumes. Arsine, a very deadly gas, can be released in the presence of acid, acid mists, or hydrogen gas.
Properties of POTASSIUM ARSENATE
| Melting point: | 277-283 °C(lit.) |
| Density | 2.867 |
| solubility | : clear to very slightly hazy, colorless to faintly yellow |
| form | powder |
| Specific Gravity | 2.8 |
| color | white to off-white |
| Water Solubility | g/100g solution H2O: 15.7 (0°C), 23.6 (25°C), 48.0 (100°C); solid phase, KH2AsO4 ·H2O (0°C, 25°C), KH2AsO4 (100°C) [KRU93]; slowly soluble in 1.6 parts glycerol; insoluble alcohol [MER06] |
| Merck | 13,7689 |
| EPA Substance Registry System | Potassium arsenate (7784-41-0) |
Safety information for POTASSIUM ARSENATE
| Signal word | Danger |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08  Environment GHS09 |
| GHS Hazard Statements |
H301:Acute toxicity,oral H331:Acute toxicity,inhalation H350:Carcinogenicity H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P201:Obtain special instructions before use. P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P311:Call a POISON CENTER or doctor/physician. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P501:Dispose of contents/container to..… |
Computed Descriptors for POTASSIUM ARSENATE
New Products
4-Iodo-3,5-dimethylbenzonitrile 2-fluoro-4-iodoaniline 2-(3-Methyl-1,2,4-oxadiazol-5-yl)acetic acid (as potassium salt) 6,6'-methylenebis(9-methyl-3-((2-methyl-1H-imidazol-1-yl)methyl)-2,3-dihydro-1H-carbazol-4(9H)-one) 3-Bromo-2-fluorobenzoic acid Quinuclidine-4-carbonitrile N,N CARBONYL DIIMIDAZOLE 2-Amino-5-bromo-4-(trifluoromethyl)pyridine（RM for Indian lab) (RS)-beta-Amino-beta-(4-bromophenyl)propionic acid Tetrabutylammonium perchlorate N,O-Dimethylhydroxylamine hydrochloride (R)-1-Benzyl-3-pyrrolidinecarbonitrile Bupropian related compound F Lantanoprost rc B Clidinium Bromide Impurity Noradrenaline EP Impurity D/Noradrenaline Methyl Ether Cetirizine EP Impurity A/Cetirizine CBHP Impurity N-Nitroso hydroxy Cetrizine EP Impurity-A 4-(5-amino-1-methyl-1h-benzoimidazol-2-yl)-butyric acid isopropyl ester. 1,4-bis(methylsulfonyl)butane 4-Cyano-N-Methacryloyl-3-Trifluoromethyl Aniline 5-Methyl-1,3-benzenediacetonitrile 4-Fluorothiophenol 1-methyl amino-2,4-dinitro benzeneRelated products of tetrahydrofuran
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