Crystallographic
Syngony	Cubic
Symmetry Class	m3m Fd3m
Lattice Constants	a = 5.43089 Å

Optical
Refractive Index at n3.0	3.436
Refractive Index at n5.0	3.426
Thermal Coefficient of Refractive Index at 25 °C	1.50 x 10-4
Transmission Range, microns	1.2 - 10, 50 - 100

Thermal
Thermal Linear Expansion, °C-1 for 25 °C	2.55 x 10-6
Thermal Conductivity, W/(m * °C) at 27 °C	159
Specific Heat Capacity, J/(kg * °C)	0.712 x 103
Melting Point, °C	1412

Mechanical
Density, g/cm3 at 20 °C	2.329
Mohs Hardness	7
Young Modulus (E), Pa	1.89 x 1010
Shear Modulus (G), Pa	7.99 x 1010
Poisson Ratio	0.266

Chemical
Molecular Weight	28.09
Solubility	insoluble

Ref. Index vs. Wavelength l
Wavelength, Microns	Refractive Index
1.5	3.484
2.0	3.456
3.0	3.436
4.0	3.429
5.0	3.426
6.0	3.424
7.0	3.423
8.0	3.422
9.0	3.422

Custom sizes and specifications are available on request.