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POTASSIUM ARSENATE

CAS No.
7784-41-0
Chemical Name:
POTASSIUM ARSENATE
Synonyms
Kaliumarsenat;POTASSIUM ARSENATE;monopotassium arsenate;arsenic acid potassium;ARSENIC ACID POTASSIUM SALT;GVPLVOGUVQAPNJ-UHFFFAOYSA-M;POTASSIUM ARSENATE MONOBASIC;POTASSIUM DIHYDROGEN ARSENATE;ARSENICACID,MONOPOTASSIUMSALT;potassium,dihydrogen arsorate
CBNumber:
CB9210776
Molecular Formula:
AsH2KO4
Molecular Weight:
180.03
MDL Number:
MFCD00036296
MOL File:
7784-41-0.mol
Last updated:2026-05-28 04:59:23

POTASSIUM ARSENATE Properties

Melting point 277-283 °C(lit.)
Density 2.867
solubility : clear to very slightly hazy, colorless to faintly yellow
form powder
color white to off-white
Specific Gravity 2.8
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
REACH Annex XVII Substances List Potassium dihydrogenarsenate (7784-41-0)
FDA UNII 55K74GS94Q
EPA Substance Registry System Potassium arsenate (7784-41-0)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Skull and Crossbones (GHS06)Health Hazard (GHS08)Environment (GHS09)
GHS06,GHS08,GHS09
Signal word  Danger
Hazard statements  H301-H331-H350-H410
Precautionary statements  P264-P270-P261-P271-P201-P202-P280-P273-P301+P310-P330-P304+P340-P311-P308+P313-P391-P405-P403+P233-P501
Hazard Codes  T,N
Risk Statements  45-23/25-50/53
Safety Statements  53-45-60-61
RIDADR  UN 1677
WGK Germany  3
RTECS  CG1100000
TSCA  TSCA listed
HazardClass  6.1
PackingGroup  II
Hazardous Substances Data 7784-41-0(Hazardous Substances Data)

POTASSIUM ARSENATE price More Price(9)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
ProChem 2903 Potassium Dihydrogen Arsenate 99+% 7784-41-0 5g $44 2026-05-25 Buy
ProChem 2903 Potassium Dihydrogen Arsenate 99+% 7784-41-0 25g $175 2026-05-25 Buy
Usbiological 287269 Potassium dihydrogen arsenate 7784-41-0 50g $382 2021-12-16 Buy
American Custom Chemicals Corporation ING0000980 POTASSIUM DIHYDROGEN ARSENATE 95.00% 7784-41-0 5G $409.45 2021-12-16 Buy
Medical Isotopes, Inc. 16343 Arsenicacidpotassiumsalt 7784-41-0 50g $490 2021-12-16 Buy
Product number Packaging Price Buy
2903 5g $44 Buy
2903 25g $175 Buy
287269 50g $382 Buy
ING0000980 5G $409.45 Buy
16343 50g $490 Buy

POTASSIUM ARSENATE Chemical Properties, Uses, Production

Chemical Properties

Colorless crystals. Soluble in water; insoluble in alcohol.

Chemical Properties

Potassium arsenate is a colorless to white crystalline solid.

Uses

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.

POTASSIUM ARSENATE Preparation Products And Raw materials

Raw materials

Preparation Products

Global Suppliers ( 37)
Supplier Tel Email Country ProdList Advantage
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Spectrum Chemical Manufacturing Corp. 021-021-021-67601398-809-809-809 15221380277 marketing_china@spectrumchemical.com China 9643 60
Alfa Chemistry 1-516-6625404 support@alfa-chemistry.com United States 9170 60
Shaanxi Dideu Medichem Co. Ltd +86-29-81139210 +86-17392587031 1059@dideu.com China 9789 58
Shanghai Jiegu Biotechnology Co., Ltd. 021-51698675 sales@jiejiegroup.com China 8195 58
SHANGHAI T&W PHARMACEUTICAL CO., LTD. +86-021-61551413 contact@trustwe.com China 5771 58
Shaanxi DIDU pharmaceutical and Chemical Co., Ltd 029-029-029-81148696 18161915376 1027@dideu.com China 9989 58
Shaanxi Didu New Materials Co. Ltd +86-86-17392712779 +86-13289823923 1090@dideu.com China 8651 58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. +8618950047208 ellena@amitychem.com China 43392 58
Shenzhen Nexconn Pharmatechs Ltd +86-755-89396905 +86-15013857715 admin@nexconn.com China 10399 58

POTASSIUM ARSENATE Spectrum

ARSENIC ACID POTASSIUM SALT POTASSIUM DIHYDROGEN ARSENATE POTASSIUM ARSENATE POTASSIUM ARSENATE MONOBASIC arsenic acid potassium monopotassium arsenate Potassium arsenate monobasic anhydrous POTASSIUM DIHYDROGENARSENATE, 99.9+% Potassiumarsenateforanalyticalpurpose PotassiumDihydrogenarsenat99.9+% ARSENICACID,MONOPOTASSIUMSALT Kaliumarsenat Potassium arsenate: (Monopotassium arsenate) Arsenic acid potassium salt, Potassium dihydrogen arsenate Arsenic acid dihydrogen potassium salt Potassium Dihydrogen Arsenate 99+% GVPLVOGUVQAPNJ-UHFFFAOYSA-M potassium,dihydrogen arsorate Arsenic acid (H3AsO4),potassium salt (1:1) 7784-41-0 KH2AsO4