TITANIUM DIOXIDE (Rutile), TiO2
Main Properties
|
Chemical Formula |
TiO2 |
| Molecular Weight | 79.9 |
|
Crystal Class |
Tetragonal |
|
Density, g/cm3 at 300 K |
4.25 |
|
Transmission Range, µm |
0.43 – 6.2 |
| Reflection Loss for two surfaces at 2 µm, % for the ordinary ray for the extraordinary ray |
30 34.8 |
| Zero Dispersion Wavelength, µm | 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, µm | 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 |