Potassium selenate

Potassium selenate
Identifiers
CAS Number	7790-59-2 ;
3D model (JSmol)	Interactive image;
ChemSpider	56431;
ECHA InfoCard	100.029.286
EC Number	232-214-7;
PubChem CID	62680;
RTECS number	VS6600000;
UNII	99798PU7MI ;
CompTox Dashboard (EPA)	DTXSID00889579 ;
	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
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H301, H331, H373, H410
Precautionary statements	P260, P261, P264, P270, P271, P273, P301+P316, P304+P340, P316, P319, P321, P330, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 1 0
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.

v t e Potassium compounds
H, (pseudo)halogens	KF KHF₂ KH KCl KClO KClO₃ KClO₄ KBr KBrO₃ KI KIO₃ KIO₄ KAt KCN KCNO KOCN KSCN
chalcogens	K₂O KOH K₂O₂ KO₂ KO₃ K₂S KHS K₂SO₃ KHSO₃ K₂SO₄ KHSO₄ KHSO₅ K₂S₂O₃ K₂S₂O₅ K₂S₂O₇ K₂S₂O₈ K₂Se K₂SeO₃ K₂SeO₄ K₂Te K₂TeO₃ K₂TeO₄ K₂Po
pnictogens	K₃N KNH₂ KN₃ KNO₂ KNO₃ K₃P KH₂PO₃ K₃PO₄ K₂HPO₄ KH₂PO₄ KPF₆ KAsO₂ K₃AsO₄ K₂HAsO₄ KH₂AsO₄
B, C group	B₄K₂O₇ K₂CO₃ KHCO₃ K₂SiO₃ K₂SiF₆ K₂Al₂O₄ K₂Al₂B₂O₇
transition metals	K₂PtCl₄ K₂Pt(CN)₄ K₂TiF₆ K₂PtCl₆ K₂ReCl₆ K ₂ReF ₆ KAsF₆ K₂ReBr₆ K ₂ReI ₆ K₂ZrF₆ K₄Fe(CN)₆ K₃Fe(CN)₆ K₃Fe(C₂O₄)₃ K₂FeO₄ K₂MnO₄ KMnO₄ K₃CrO₄ K₂CrO₄ K₃CrO₈ KCrO₃Cl K₂Cr₂O₇ K₂Cr₃O₁₀ K₂Cr₄O₁₃ K₄Mo₂Cl₈
organic	KHCO₂ KCH₃CO₂ KCF₃CO₂ K₂C₂O₄ KHC₂O₄ KC₁₂H₂₃O₂ KC₁₈H₃₅O₂ C₃H₂K₂O₄ C₄H₆KO₄ C₅H₇KO₄

Uses

Identifiers

CAS Number	7790-59-2^Y
3D model (JSmol)	Interactive image
ChemSpider	56431
ECHA InfoCard	100.029.286
EC Number	232-214-7
PubChem CID	62680
RTECS number	VS6600000
UNII	99798PU7MI^Y
CompTox Dashboard (EPA)	DTXSID00889579
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^[1]
Appearance	colorless crystals hygroscopic
Odor	odorless
Density	3.07 g/cm3^[2]
Solubility in water	1.07 g/ml (0 °C) 1.11 g/ml (20 °C) 1.22 g/ml (100 °C)
Refractive index (n_D)	1.539
Structure
Crystal structure	orthorhombic
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H301, H331, H373, H410
Precautionary statements	P260, P261, P264, P270, P271, P273, P301+P316, P304+P340, P316, P319, P321, P330, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 1 0
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