Almaz Optics, Inc.
12 Chadsford Ct.  Marlton, NJ 08053, USA
Tel:  856 797-0491, Fax: 856 797-0228
e-mail: mail@almazoptics.com

 

































TITANIUM DIOXIDE (Rutile), TiO2

Rutile is the most common form of Titanium Dioxide. Rutile is hard, chemically resistant, and has a high refractive index that is useful for interference applications.
Maximum available size: 10 x 10 x 10 mm.


TiO2Full.gif (5528 bytes)

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Main Properties

Chemical Formula

TiO2

Molecular Weight 79.9

Crystal Class

Tetragonal

Density, g/cm3 at 300 K

4.25

Transmission Range, Ám

0.43 - 6.2
Reflection Loss for two surfaces at 2 Ám, %
for the ordinary ray
for the extraordinary ray

30
34.8
Zero Dispersion Wavelength, Ám 2.8
Dielectric Constant for 104 - 107 Hz 200-160
Melting Temperature, K 2090
Thermal Conductivity, W/(m K) at 273 K
parallel
perpendicular

13.0
9.0
Thermal Expansion, 1/K at 313 K
parallel
perpendicular

9.2 x 10-6
7.1 x 10-6
Specific Heat, cal/(g K) at 298 K 0.17
Debye Temperature, K 760
Bangap, eV 3.3
Solubility in water None

Knoop Hardness, kg/mm2

879

Bulk Modulus, GPa 15.02

 


Refractive Index of Rutile (TiO2)

l, Ám 0.4358 0.4916 0.4960 0.5461 0.5770 0.5791 0.6907 0.7082 1.014 1.5296 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
nO 2.853 2.725 2.718 2.652 2.623 2.621 2.555 2.548 2.484 2.454 2.399 2.387 2.38 2.367 2.35 2.322 2.29 2.2
nE 3.216 3.051 3.042 2.958 2.921 2.919 2.836 2.826 2.747 2.71