Bismuth Iodide (BiI3) Semiconductors

Aug 20 2013

Topics Covered

Description
Applications
Chemical Properties
Electrical Properties
Mechanical Properties
Safety Information

Description

Bismuth iodide is an inorganic compound with the chemical formula BiI3. It occurs as gray-black solid and adopts a distinctive crystal structure with iodide centers as a hexagonally closest-packed lattice. It forms upon heating a mixture of bismuth and iodine powder. It can also be formed by the reaction of bismuth oxide with aqueous hydroiodic acid.

Applications

Bismuth iodide finds applications in the following:

  • It is used in a test for bismuth ions and alkaloids
  • It is used as a catalyst in guanylation reactions
  • Gamma-ray detection applications
  • It is used as a compound in semiconductor and other high purity applications.

Chemical Properties

The chemical properties of bismuth iodide are provided in the table below:

Chemical Properties
Chemical Formula BiI3
Molecular Weight 589.69
CAS No. 7787-64-6
Group Bismuth – 15
Iodine - 17
Crystal Structure Hexagonal

Electrical Properties

The electrical properties of bismuth iodide are provided in the table below:

Electrical Properties
Magnetic Susceptibility -0.0002005

Mechanical Properties

The mechanical properties of bismuth iodide are provided in the tables below:

Mechanical Properties
Density 5.778 g/cm3
Melting Point 408.6°C
Boiling Point 542°C

Safety Information

Safety Information
GHS Hazard Statements R23/25 - Toxic by inhalation and if swallowed.
R33 - Danger of cumulative effects.
Safety Precautions S20/21 - When using, do not eat, drink or smoke.
S28 - After contact with skin, wash immediately with plenty of water
S45 - In case of accident or if you feel unwell, seek medical advice immediately.

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