Tin Dioxide (SnO2) Semiconductors

Aug 16 2013

Topics Covered

Description
Applications
Chemical Properties
Electrical Properties
Thermal, Mechanical and Optical Properties
Safety Information

Description

Tin dioxide is an inorganic compound with the chemical formula SnO2. It mainly occurs in the mineral cassiterite, and crystallizes with a tetragonal structure. It is a colorless, amphoteric and diamagnetic solid that is usually thought of as an oxygen-deficient n-type semiconductor.

It is insoluble in water, but dissolves in alkalis and acids. Tin dioxide is purified by reduction of the metal and burning tin in air.

Applications

Tin dioxide finds applications in the following areas:

  • Carbon monoxide detectors
  • Catalysis for the oxidation of aromatic compounds
  • Coatings and polishing powders
  • Ceramic glazes.

Chemical Properties

The chemical properties of tin dioxide are provided in the table below:

Chemical Properties
Chemical Formula SnO2
Molecular Weight 150.709
CAS No. 18282-10-5
Group Tin – 14
Oxygen - 16
Crystal Structure Tetragonal

Electrical Properties

The electrical properties of tin dioxide are provided in the table below:

Electrical Properties
Dielectric Constant 9.86
Band Gap 3.57 eV

Thermal, Mechanical and Optical Properties

The thermal, mechanical and optical properties of tin dioxide are provided in the tables below:

Thermal Properties
Heat of Formation -280.7 kJ/mol
Standard Molar Entropy 57.2 J/mol K
Specific Heat Capacity 44.3 J/mol K
Mechanical Properties
Density 6.9 – 7 g/cm3
Melting Point 1630°C
Boiling Point 1800 - 1900°C
Optical Properties
Refractive Index 2.006

Safety Information

Safety Information
GHS Hazard Statements H314 - Causes severe skin burns and eye damage
H332 - Harmful if inhaled
H335 - May cause respiratory irritation.
Safety Precautions P350: Gently wash with soap and water
P305+351+338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
(Logout)
Your comment type
Submit
OIM Matrix™ Software Package

OIM Matrix™ Software Package

The OIM Matrix™ software package, which is offered as an option with OIM Analysis™, allows users to simulate EBSD patterns based on the physics of dynamical diffraction of electrons.

From EDAX

Sponsored Content

Editorial Highlights

The Current State of the Global Semiconductor Market

The Current State of the Global Semiconductor Market

The global semiconductor market has entered an exciting period. Demand for chip technology is both driving the industry as well as hindering it, with current chip shortages predicted to last for some time. Current trends will likely shape the future of the industry, which is set to continue to show

How are Graphene Batteries Made?

How are Graphene Batteries Made?

The primary distinction between graphene-based batteries and solid-state batteries lies in the composition of either electrode. Although the cathode is commonly changed, carbon allotropes can also be employed in fabricating anodes.

Newsletters you may be interested in

See all Newsletters »