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Indium is a Chemical Element with the symbol “In” and Atomic Number “49”. It is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. Very soft and malleable, Indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Chemically, Indium is similar to gallium and thallium, and it is largely intermediate between the two in terms of its properties.

Indium is a minor component in zinc sulfide ores and is produced as a byproduct of zinc refinement. It is most notably used in the Semiconductor Industry, in low-melting-point metal alloys such as solder, in soft-metal high-vacuum seals, and in the production of transparent conductive coatings of Indium tin oxide (ITO) on the glass.

Indium has no biological role, though its compounds are somewhat toxic when injected into the bloodstream. Most occupational exposure is through ingestion, from which indium compounds are not absorbed well, and inhalation, from which they are moderately absorbed.


Chemical Data
CAS number7440-74-6
Thermal neutron cross section196 barns/atom
Electrode potential-0.340 V
Ionic radius0.810 Å
X-ray absorption edge0.44397 Å
Electrochemical equivalent1.4 g/A/h


Density6.916 g/cm30.2499 lb/in3
Melting point156°C313°F
Boiling point2000°C3632°F


Tensile strength4.50 MPa653 psi
Modulus of elasticity12.7 GPa1840 ksi
Shear modulus4.40 GPa638 ksi
Hardness, Brinell0.90.9
Hardness, Vickers≤ 10≤ 10


Thermal expansion co-efficient (@20-100°C/68-212°F)33 µm/m°C18.3 µin/in°F
Thermal conductivity83.7 W/mK581 BTU in/hr.ft².°F


  • Rectifiers.
  • Solar cells.
  • Thermistors.
  • Semiconductors.
  • Photoconductors.
  • To dope Germanium to make transistors.
  • To make mirrors and low melting alloys.
  • Coating the bearings of high-speed motors.
  • Alloying for low-temperature solders and fuses.
  • As a light filter in low-pressure sodium vapor lamps.
  • Electroplating for high-performance engine components..
  • Used in the manufacturing of automobile bearings, which improves anti-seizure properties and moisture resistance.
  • Used in semiconductor industries in the manufacturing of transistors, rectifiers, and diodes.
  • Plating Applications.
  • Indium is also used in the manufacturing of corrosive resistant mirrors.

We also Supply Indium Foil.

For Any Inquiries Contact:-

Ms. Pragati Sanap

(Sales Manager)

Call +91 8928403611 or Email: sales@domadia.com

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