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TiO₂

Titanium dioxide

IUPAC : Titanium dioxide
OxideMineralIndustrialEverydayFood

The most widely used white pigment worldwide thanks to its exceptional refractive index. Found in paints, plastics, sunscreens and (formerly) confectionery.

3D ball-and-stick representation of Titanium dioxide (formula TiO₂). Constituent atoms: Ti, O.
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Physical properties

Molar mass79.866 g/mol
State at 20 °Csolid
Density4.23 g/cm³
Melting point2116.00 K (1843 °C)
Boiling point3245.00 K (2972 °C)
Solubility (H₂O)insoluble
Refractive index2.614

Structure

Crystal systemTetragonal
3D render modeBall-and-stick

Uses and applications

  • White pigment for paints, coatings and plastics
  • Sunscreens (physical UV filter, nanoparticles)
  • Photocatalysis (pollutant degradation, self-cleaning surfaces)
  • Ceramics and enamels
  • Paper (white filler)

Constituent elements

22Ti
Titanium
8O
Oxygen

References

PubChem CID26042
CAS13463-67-7
SMILESO=[Ti]=O
Sources : PubChem CID 26042 · CRC Handbook of Chemistry and Physics