Crystallographic
|
Syngony |
Hexagonal |
|
Symmetry Class |
P3221 |
|
Lattice Constants |
a = 4.9138 Å c = 5.4052 Å |
Optical
|
Refractive Index no at n0.436 |
1.5538 |
|
Refractive Index at ne at n0.436 |
1.5632 |
|
Thermal Coefficient of Refractive Index at 340 nm for +20/+100 ℃ |
|
|
no |
-5.01 x 10-6 |
|
ne |
-3.93 x 10-6 |
|
Transmission Range, microns |
0.15 - 3.3 |
Thermal
|
Thermal Linear Expansion, ℃-1 for 0/+20 ℃ |
13.24 x 10-6 |
|
Thermal Conductivity, W/(m * ℃) at 25 ℃ |
|
|
no |
6.82 |
|
ne |
11.43 |
|
Specific Heat Capacity, J/(kg * ℃) |
0.741 x 103 |
|
Melting Point, ℃ |
1470 |
Mechanical
|
Density, g/cm3 at 20 ℃ |
2.649 |
|
Mohs Hardness |
7 |
|
Vickers Microhardness, Pa |
981 x 107 |
|
Young Modulus (E), Pa |
|
|
no |
8.7 x 1010 |
|
ne |
10.5 x 1010 |
Chemcical
|
Molecular Weight |
60.06 |
|
Solubility |
|
|
in water, gram/100cm3 |
insoluble |
Ref. Index vs. Wavelength λ
|
Wavelength, Microns |
Refractive Index no |
Refractive Index ne |
|
0.2001 |
1.6493 |
1.6623 |
|
0.2503 |
1.6003 |
1.6114 |
|
0.3034 |
1.5770 |
1.5872 |
|
0.4047 |
1.5572 |
1.5667 |
|
0.5086 |
1.5482 |
1.5575 |
|
0.6438 |
1.5423 |
1.5513 |
|
1.0000 |
1.5350 |
1.5438 |
|
1.2000 |
1.5323 |
1.5410 |
|
1.4000 |
1.5297 |
1.5383 |
|
1.6000 |
1.5270 |
1.5355 |
|
1.8000 |
1.5241 |
1.5324 |
|
2.5000 |
1.5116 |
1.5195 |
|
3.0000 |
1.4996 |
1.5070 |
Custom sizes and specifications are available on request.
