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Article | REF: N4813 V1

Titanium Dioxide. Properties and Applications

Author: Philippe BLANCHART

Publication date: June 10, 2019, Review date: August 26, 2021

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2. Properties of titanium oxide

2.1 Physical properties

Titanium dioxide (TiO 2 ) is a thermally stable white solid inorganic substance, non-flammable and sparingly soluble in usual solutions. The main physical properties of titanium dioxide are as follows:

  • molar mass: 79.8658 g.mol –1 ;

  • melting temperature: 1,855 °C ;

  • boiling temperature: 2,500-3,000°C ;

  • Mohs hardness: anatase 5.5-6; rutile 6-7 ;

  • average relative dielectric permittivity: anatase 45; rutile 127 ;

  • refractive index in air: anatase 2.55; rutile 2.75....

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