Potassium fluorosilicate

Potassium fluorosilicate

Names
Preferred IUPAC name Potassium fluorosilicate
Other names Potassium hexafluorosilicate(IV)
Identifiers
CAS Number	16871-90-2
3D model (JSmol)	Interactive image
ChemSpider	55723
ECHA InfoCard	100.037.163
EC Number	240-896-2 [1]
PubChem CID	61851
RTECS number	VV8400000
UNII	2610W49XYD
UN number	2655
CompTox Dashboard (EPA)	DTXSID10884939
InChI InChI=1S/F6Si.2K/c1-7(2,3,4,5)6;;/q-2;2*+1 Key: UUHPPUWEDCVPCO-UHFFFAOYSA-N
SMILES F[Si-2](F)(F)(F)(F)F.[K+].[K+]
Properties
Chemical formula	K2[SiF6]
Molar mass	220.28 gmol−1 [1]
Density	2.27gcm−3,[1] 2.719gcm−3 [2]
Solubility in water	Slightly soluble in water
Structure
Crystal structure	cubic
Space group	Fm3m
Lattice constant	a = 0.8134 nm
Lattice volume (V)	0.538.2 nm3
Formula units (Z)	4
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H311, H331
Precautionary statements	P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P311, P312, P321, P322, P330, P361, P363, P403+P233, P405, P501
Related compounds
Other cations	Ammonium hexafluorosilicate Sodium fluorosilicate Fluorosilicic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Potassium fluorosilicate is a chemical compound with the chemical formula K₂[SiF₆].

When doped with Potassium hexafluoromanganate(IV) ((K₂[MnF₆]) it forms a narrow band red producing phosphor, (often abbreviated PSF or KSF), of economic interest due to its applicability in LED lighting and displays.