What is lead iodide?

PbI2 is a salt v chemical name Lead iodide. That is additionally called Plumbous iodide or lead (II) iodide or command diiodide. That is a great oxidizing agent, burns through a green coloured flame. That is widely supplied in printing, photography, and also to seed clouds.

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Lead diiodide is a crystalline solid, odourless and yellow in colour. It is insoluble in water and denser when compared to water. That is a threat to the environment and immediate steps need to be taken to stop the spread.

Properties of lead iodide – PbI2


PbI2Lead iodide
Molecular weight of PbI2461.01 g/mol
Density of command iodide6.16 g/dm3
Melting point of lead iodide402 °C
Boiling allude of command iodide953 °C

Lead iodide framework – PbI2

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Lead iodide is provided as precursor in the fabrication that solar cells.Used together an essential solvent.Used together photon detector for X-rays and also gamma-rays.Used in the manufacturing of thermoelectric materials.Used in photography.Used in printing.Used in bronzing.Used in making mercury vapour arc lamps.Used to document optical photos in films.

Production of lead iodide

Plumbous iodide is typically produced through a twin displacement reaction between lead nitrate and potassium iodide in water.

Pb(NO3)2 + 2 KI → PbI2 + 2 KNO3

At room temperature, potassium nitrate is soluble whereas command iodide is insoluble and also therefore it experience precipitation.

It can likewise be produced by reaction iodine vapor v molten lead at a temperature selection of 500 to 700 °C.

Another an approach to obtain lead iodide in the type of a slim film is through depositing a movie of PbS and also exposing it come iodine vapor. The reaction is together follows:

PbS + I2 → PbI2 + S

The sulfur (S) obtained is washed v dimethyl sulfoxide (C2H6OS).

Health hazards

Some of the at an early stage symptoms that occur due to swallowing or inhaling lead (II) iodide room gastrointestinal disorders, constipation, weakness, paralysis. Ingesting big amounts of this compound results in irritation of the alimentary tract. That is non-combustible and also when heated to decompose it develop toxic and also corrosive fumes.

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Learn much more about the Structure, physical and chemical properties of PbI2 along v the reaction in between iodide ions and also hydrogen peroxide from the specialists at BYJU’S.