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Lead(II) iodide



Lead(II) iodide
Other names Lead diiodide, lead iodide
Identifiers
CAS number 10101-63-0
Properties
Molecular formula PbI2
Molar mass 461.05 g/mol
Density 6.16 g/cm³
Melting point

403 °C

Boiling point

872 °C

Solubility in other solvents 1 g in 1350 mL cold water
1 g in 230 mL hot water
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Lead (II) iodide (PbI2) is a toxic, yellowish solid. In its crystalline form it is used as a detector material for high energy photons including x-rays and gamma rays. It is also known as plumbous iodide. The CAS registry number is 10101-63-0. Its molecular weight is 461.05 g.mol-1.

Lead iodide is toxic due to its lead content.

In the nineteenth century it was used as an artists' pigment under the name Iodine Yellow, but it was too unstable to be useful.[1]

Lead iodide is formed via precipitation by mixing lead(II) nitrate and potassium iodide:

Pb(NO3)2 (aq) + 2KI (aq) → PbI2 (s) + 2KNO3 (aq)

References

  1. ^ Salter, Thomas W., Field’s Chromatography: or Treatise on Colours and Pigments as Used by Artists By George Field. An entirely new and practical edition revised, rewritten and brought down to the present time, 1869
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Lead(II)_iodide". A list of authors is available in Wikipedia.
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