Lead(II) fluoride

Lead(II) fluoride
Identifiers
CAS number 7783-46-2 Y
Properties
Molecular formula PbF2
Molar mass 245.20 g/mol
Appearance white powder
Density 8.445 g/cm3 (orthorhombic)
7.750 g/cm3 (cubic)
Melting point

824°C

Boiling point

1293°C

Solubility in water 0.64 g/100 mL (20 °C) [1]
Solubility product, Ksp 7.12 x 10-7
Solubility soluble in nitric acid;
insoluble in acetone and ammonia
Structure
Crystal structure Fluorite (cubic), cF12
Space group Fm3m, No. 225
Hazards
LD50 3000 mg/kg (oral, rat)
Related compounds
Other anions Lead(II) chloride
Lead(II) bromide
Lead(II) iodide
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Lead(II) fluoride (PbF2) is a chemical compound that is an odorless white solid.

Conditions/substances to avoid are: strong oxidizers.

Uses

Lead(II) fluoride is used:

Preparation

Lead(II) fluoride can be prepared by several methods. It is obtained by treating lead(II) hydroxide or lead(II) carbonate with hydrofluoric acid, followed by evaporation of the solution:

Pb(OH)2 + 2 HF → PbF2 + 2 H2O

Alternatively, it is precipitated by adding hydrofluoric acid to a lead(II) salt solution, or by adding potassium fluoride to a lead(II) nitrate solution.

2 KF + Pb(NO3)2 → PbF2 + 2 KNO3

References

  1. ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0070494398