Potassium fluoride

Potassium fluoride
Names
	IUPAC name Potassium fluoride
Identifiers
CAS Number	7789-23-3 (anhydrous) ; 13455-21-5 (dihydrate) ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL1644027 ;
ChemSpider	23006 ;
ECHA InfoCard	100.029.228
EC Number	232-151-5;
PubChem CID	522689;
RTECS number	TT0700000;
UNII	9082WG1G3F ; 95R1D12HEH (dihydrate) ;
CompTox Dashboard (EPA)	DTXSID8031940 ;
	InChI InChI=1S/FH.K/h1H;/q;+1/p-1 Key: NROKBHXJSPEDAR-UHFFFAOYSA-M ; InChI=1S/FH.K/h1H;/q;+1/p-1 Key: NROKBHXJSPEDAR-REWHXWOFAI; Key: NROKBHXJSPEDAR-UHFFFAOYSA-M;
	SMILES [F-].[K+];
Properties
Chemical formula	KF
Molar mass	58.0967 g/mol (anhydrous) ; 94.1273 g/mol (dihydrate)
Appearance	colourless
Density	2.48 g/cm3
Melting point	858 °C (1,576 °F; 1,131 K) (anhydrous) ; 41 °C (dihydrate) ; 19.3 °C (trihydrate)
Boiling point	1,502 °C (2,736 °F; 1,775 K)
Solubility in water	anhydrous: ; 92 g/100 mL (18 °C) ; 102 g/100 mL (25 °C) dihydrate: ; 349.3 g/100 mL (18 °C)
Solubility	soluble in HF ; insoluble in alcohol
Magnetic susceptibility (χ)	−23.6·10−6 cm3/mol
Structure
Crystal structure	cubic
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
NFPA 704 (fire diamond)	3 0 0
Flash point	Non-flammable
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	245 mg/kg (oral, rat)
Related compounds
Other anions	Potassium chloride; Potassium bromide; Potassium iodide
Other cations	Lithium fluoride; Sodium fluoride; Rubidium fluoride; Caesium fluoride; Francium fluoride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Potassium fluoride is the chemical compound with the formula KF. After hydrogen fluoride, KF is the primary source of the fluoride ion for applications in manufacturing and in chemistry. It is an alkali halide salt and occurs naturally as the rare mineral carobbiite. Solutions of KF will etch glass due to the formation of soluble fluorosilicates, although HF is more effective.

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