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- Molecular formula: I2Pb
- Molar mass: 461.009
- CAS Registry Number: Not available
- Appearance: Not available
- Melting point: 402 °C
- Boiling point: 954 °C
- Solubility: Partially soluble in water. Freely soluble in sodium thiosulfate solution. Soluble in concentrated solutions of alkali iodides. Insoluble in alcohol and cold HCl
- Safety sheet: Not available
- Spectra: Check on SDBS. Add Spectra (Help).
Lead(II) iodide or lead iodide is a salt with the formula PbI2. At room temperature, it is a bright yellow odorless crystalline solid, that becomes orange and red when heated. It was formerly called plumbous iodide.
The compound currently has a few specialized applications, such as the manufacture solar cells and X-ray and gamma-ray detectors. Its prepraration is a popular demonstration in basic chemistry education, to teach topics such as double displacement reactions and stoichometry. It is decomposed by light at moderately high temperatures and this effect has been used in a patented photographicprocess.
Lead iodide was formerly employed as a yellow pigment in some paints, with the name iodide yellow. However, that use has been largely discontinued due to its toxicity and poor stability.
Diiodo-lambda~2~-plumbane (IUPAC Name)