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Ammonium hexafluorophosphate

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Ammonium hexafluorophosphate
Ball-and-stick model of the ammonium cation
Ball-and-stick model of the ammonium cation
Ball-and-stick model of the hexafluorophosphate anion
Ball-and-stick model of the hexafluorophosphate anion
Names
IUPAC name
ammonium hexafluorophosphate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.037.266 Edit this at Wikidata
EC Number
  • 241-009-1
UNII
  • InChI=1S/F6P.H3N/c1-7(2,3,4,5)6;/h;1H3/q-1;/p+1 checkY
    Key: NIZXKAYXSNUDOU-UHFFFAOYSA-O checkY
  • InChI=1/F6P.H3N/c1-7(2,3,4,5)6;/h;1H3/q-1;/p+1
    Key: NIZXKAYXSNUDOU-IKLDFBCSAF
  • [NH4+].F[P-](F)(F)(F)(F)F
  • F[P-](F)(F)(F)(F)F.[NH4+]
Properties
(NH4)[PF6]
Molar mass 163.00264
Appearance white solid
Density 2.180 g/cm3
74.8 g/100 mL(20 °C)
Hazards
GHS labelling:
GHS05: Corrosive
Danger
H314
P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
Safety data sheet (SDS) Oxford MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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:[1]

PCl5 + 6 NH4F → NH4PF6 + 5 NH4Cl
PNCl2 + 6 HF → NH4PF6 + 2 HCl

References

[edit]
  1. ^ W. Kwasnik (1963). "Ammonium Hexafluorophosphate (V)". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 1. NY, NY: Academic Press. pp. 195–196.