Solid phase
Official name
Titanium(IV) dioxide
Secondary names
Titania; dioxotitanium; Titanium dioxide; Rutile; Titania; TiO2
CAS number
13463-67-7
Type
Family
covalent network solid
Class
tridimentional covalent network solid
Compound type
oxide
Chemical composition
Formula
$TiO_2$
Chemical formula
TiO2
Elemental formula
Ti O2
Isotope mixture type
terrestrial abundance
6.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Ti$ Titanium element 1 0.3333333333333333 1 constituent element main
$O$ Oxygen element 2 0.6666666666666666 1 constituent element main
Chemical bonds
  Bond Number
$\geq Ti-O-$ 6
Class
tridimensional covalent networks (11)
Type
one metal and one non-metal (or metalloid) tridimensional networks (11.04)
Equivalent mineral
Rutile
Phase name
Rutile
Phase type
crystalline
Crystal system
tetragonal
Crystal class
ditetragonal-dipyramidal
Crystal class symbol
4/mmm (D4h)
Crystal spacegroup
P4(2)/mnm
Molar mass
79.866 $g/mol$
Density
4.23 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid TiO2 1843°C (2116 K)
Refringence type
uniaxial
Refringence sign
positive
Birefringence
0.296
Refraction index $n_{\alpha}$
2.613
Refraction index $n_{\beta}$
2.909
Dispersion V
strong
Pure color
white
Color
white
Diaphaneity
translucent to opaque
Luster
adamantine
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