Chemistry:Ammonium hexafluorophosphate

Ammonium hexafluorophosphate

Names
IUPAC name ammonium hexafluorophosphate
Identifiers
CAS Number	16941-11-0 Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	7969679 Y
EC Number	241-009-1
PubChem CID	9793912
UNII	NS308031PJ
InChI InChI=1S/F6P.H3N/c1-7(2,3,4,5)6;/h;1H3/q-1;/p+1 Y Key: NIZXKAYXSNUDOU-UHFFFAOYSA-O Y InChI=1/F6P.H3N/c1-7(2,3,4,5)6;/h;1H3/q-1;/p+1 Key: NIZXKAYXSNUDOU-IKLDFBCSAF
SMILES [NH4+].F[P-](F)(F)(F)(F)F F[P-](F)(F)(F)(F)F.[NH4+]
Properties
Chemical formula	(NH4)[PF6]
Molar mass	163.00264
Appearance	white solid
Density	2.180 g/cm3
Solubility in water	74.8 g/100 mL(20 °C)
Hazards
Safety data sheet	Oxford MSDS
GHS pictograms
GHS Signal word	Danger
GHS hazard statements	H314
GHS precautionary statements	P260, P264, P280, P301+330+331, P303+361+353, P304+340, P305+351+338, P310, P321, P363, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Ammonium hexafluorophosphate is the inorganic compound with the formula NH₄PF₆. It is a white water-soluble, hygroscopic solid. The compound is a salt consisting of the ammonium cation and hexafluorophosphate anion. It is commonly used as a source of the hexafluorophosphate anion, a weakly coordinating anion. It is prepared by combining neat ammonium fluoride and phosphorus pentachloride. Alternatively it can also be produced from phosphonitrilic chloride:

PCl₅ + 6 NH₄F → NH₄PF₆ + 5 NH₄Cl

PNCl₂ + 6 HF → NH₄PF₆ + 2 HCl