Potassium arsenate

Potassium arsenate

Chembox new
ImageFile=
ImageSize=
IUPACName= Potassium dihydrogen arsenate
OtherNames= Potassium arsenate
Section1= Chembox Identifiers
CASNo=7784-41-0
PubChem=24891115
SMILES=

Section2= Chembox Properties
Formula= KH2AsO4
MolarMass= 180.03
Appearance= colourless solid
Density=
MeltingPt= 277-283 °C
BoilingPt=
Solubility=

Section3= Chembox Hazards
MainHazards=toxic
FlashPt=
Autoignition=

Potassium arsenate is the chemical compound with the formula KH2AsO4. Other salts are also called potassium arsenate, including K2HAsO4 and K3AsO4. Each of these species is derived from arsenic acid: :H3AsO4 + KOH → KH2AsO4 + H2O:KH2AsO4 + KOH → K2HAsO4 + H2O:K2HAsO4 + KOH → K3AsO4 + H2OThese species are closely related to the corresponding potassium phosphates. The anions H2AsO4, HAsO42, and AsO43 feature tetrahedral AsO4 with two, one, or no H atoms attached to the oxygen atom(s), respectively.

Although this and related arsenic salts have been prescribed for health purposes, such compounds are highly toxic.


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