Potassium hexafluorophosphate CAS 17084-13-8 is an inorganic compound with the chemical formula KPF6, mainly used as an organic fluorine substituent.

Chinese name: Potassium hexafluorophosphate

Foreign name: Potassium hexafluorophosphate

Chemical formula: KPF6

Molecular weight: 184.062

CAS login number: 17084-13-8

EINECS login number: 241-143-0

Melting point: 575 ℃

Density: 2.75 g/cm ³

Appearance: White crystalline powder

Physical and chemical properties

physical property

Melting point: 575 ° C

Density: 2.75g/cm3

Refractive index: 1.366

Steam pressure: 41.5mm Hg at 25 ° C

Appearance: White crystalline powder [1]

chemical property

1. High temperature decomposition into potassium fluoride, phosphorus trifluoride, and elemental fluorine:

KPF6 KF+PF3 ↑+F2 ↑

2. Can react with concentrated inorganic acids to prepare hexafluorophosphoric acid

KPF6+H2SO4 → KHSO4+PF5 ↑+HF ↑

HF+PF5=H2O=HPF6

Purpose

Mainly used as an organic fluorine substitute.

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