OPTICAL PROPERTIES
| Transmission Range | 0.17 to 5.5 microns |
| Refractive Index (table below) | 1.75449 (o) 1.74663 (e) at 1.06 microns |
| Reflection Loss | 14% at 1.06 microns (2 surfaces) |
| Absorption Coefficient | 0.3 x 10-3 cm-1 at 2.4µm |
| Reststrahlen Peak | 13.5µm |
| dN/dT | 13.7 x 10-6 at 5.4µm |
| dN/dµ = 0 | 1.5µm |
PHYSICAL PROPERTIES
| Density | 3.97 gm/cc |
| Melting Point | 2040°C |
| Thermal Conductivity | 27.21 Wm-1K-1 at 300K |
| Thermal Expansion | 5.6 (para) & 5.0 (perp) x 10-6/K * |
| Hardness | Knoop 2000 with 2000g indenter |
| Specific Heat Capacity | 419 J Kgm-1K-1 |
| Dielectric Constant | 11.5 (para) 9.4 (perp) at 1MHz |
| Youngs Modulus (E) | 335 GPa |
| Shear Modulus (G) | 148.1 GPa |
| Bulk Modulus (K) | 240 GPa |
| Elastic Coefficients | C11=496 C12=164 C13=115 C33=498 C44=148 |
| Apparent Elastic Limit | 300 MPa (45,000 psi) |
| Poisson Ratio | 0.25 |
CHEMICAL PROPERTIES
| Solubility | 98 x 10-6 g/100g water |
| Molecular Weight | 101.96 |
| Class/Structure | Trigonal (hex), R3c |
| µm | No | Ne | µm | No | Ne | µm | No | Ne |
| 0.193 | 1.92879 | 1.91743 | 0.442 | 1.78038 | 1.77206 | 1.064 | 1.75449 | 1.74663 |
| 0.213 | 1.88903 | 1.87839 | 0.458 | 1.77843 | 1.77015 | 1.320 | 1.75009 | 1.74227 |
| 0.222 | 1.8754 | 1.86504 | 0.488 | 1.7753 | 1.76711 | 2.703 | 1.719 | 1.711 |
| 0.226 | 1.87017 | 1.85991 | 0.515 | 1.77304 | 1.76486 | 2.941 | 1.712 | 1.704 |
| 0.244 | 1.85059 | 1.84075 | 0.532 | 1.7717 | 1.76355 | 3.333 | 1.701 | 1.693 |
| 0.248 | 1.84696 | 1.83719 | 0.694 | 1.76341 | 1.75542 | 3.704 | 1.687 | 1.679 |
| 0.257 | 1.83932 | 1.82972 | 0.755 | 1.76141 | 1.75346 | 4.000 | 1.674 | 1.666 |
| 0.266 | 1.83304 | 1.82358 | 0.780 | 1.76068 | 1.75274 | 4.348 | 1.658 | 1.65 |
| 0.337 | 1.80082 | 1.79206 | 0.800 | 1.76013 | 1.7522 | 4.762 | 1.636 | 1.628 |
| 0.351 | 1.79693 | 1.78825 | 0.820 | 1.75961 | 1.75168 | 5.000 | 1.623 | 1.615 |
| 0.355 | 1.79598 | 1.78732 | 0.980 | 1.75607 | 1.74819 |
WHILE EVERY ATTEMPT HAS BEEN MADE TO VERIFY THE SOURCE OF THE INFORMATION, NO RESPONSIBILITY IS ACCEPTED FOR ACCURACY OF DATA.
