Potassium selenate

Potassium selenate

Identifiers
CAS Number	7790-59-2
EC Number	232-214-7
Jmol 3D model	Interactive image
PubChem	62680
RTECS number	VS6600000
InChI InChI=1S/2K.H2O4Se/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2 Key: YAZJAPBTUDGMKO-UHFFFAOYSA-L
SMILES [K+].[K+].[O-][Se]([O-])(=O)=O
Properties
Chemical formula	K 2SeO 4
Molar mass	221.2 g/mol
Appearance	colorless crystals hygroscopic
Odor	odorless
Density	3.07 g/cm3
Solubility in water	1.07 g/ml (0 °C) 1.11 g/ml (20 °C) 1.22 g/ml (100 °C)
Refractive index (nD)	1.539
Structure
Crystal structure	orthorhombic
Vapor pressure	{{{value}}}
Related compounds
Other anions	Potassium sulfate
Other cations	Sodium selenate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Potassium selenate, K
₂SeO
₄, is an odorless, white solid that forms as the potassium salt of selenic acid. It is used in photography.

Preparation

Potassium selenate is produced by the reaction of selenium trioxide and potassium hydroxide.