Lithium hexafluorophosphate

Lithium hexafluorophosphate

Names
IUPAC name lithium hexafluorophosphate
Identifiers
CAS Number	21324-40-3 Y
3D model (Jmol)	Interactive image
ChemSpider	146939 Y
ECHA InfoCard	100.040.289
PubChem	23688915
InChI InChI=1S/F6P.Li/c1-7(2,3,4,5)6;/q-1;+1 Y Key: AXPLOJNSKRXQPA-UHFFFAOYSA-N Y InChI=1/F6P.Li/c1-7(2,3,4,5)6;/q-1;+1 Key: AXPLOJNSKRXQPA-UHFFFAOYAJ
SMILES [Li+].F[P-](F)(F)(F)(F)F
Properties
Chemical formula	LiPF6
Molar mass	151.905 g/mol
Appearance	white powder
Density	1.5 g/cm3
Melting point	200 °C (392 °F; 473 K)
Solubility in water	soluble
Hazards
Safety data sheet	External MSDS
GHS pictograms
GHS signal word	DANGER
GHS hazard statements	H314
GHS precautionary statements	P280, P310, P305+351+338
R-phrases	R22, R24, R34
S-phrases	S26, S36, S37, S39, S45
Flash point	Non-flammable
Related compounds
Other anions	Lithium tetrafluoroborate
Other cations	Sodium hexafluorophosphate Potassium hexafluorophosphate Ammonium hexafluorophosphate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

Lithium hexafluorophosphate is an inorganic compound with the formula LiPF₆. It is a white crystalline powder. It is used in commercial secondary batteries, an application that exploits its high solubility in nonpolar solvents. Specifically, solutions of lithium hexafluorophosphate in propylene carbonate and dimethoxyethane serve as an electrolyte in lithium batteries. This application also exploits the inertness of the hexafluorophosphate anion toward strong reducing agents, such as lithium metal.

The salt is relatively stable thermally, but loses 50% weight at 200 °C (392 °F). It hydrolyzes near 70 °C (158 °F) according to the following equation:

Owing to the Lewis acidity of the Li⁺ ions, LiPF₆ also catalyses the tetrahydropyranylation of tertiary alcohols.