Transmission range:

0.25～55μm(1)

Refractive index:

1.73916(10μm)(1)(2)

Reflection loss:

13.6％ at 10μm

Absorption coefficient:

n / a

Absorption peak:

145.8μm

dn/dT

-99.3×10-6 /℃(2)

dn/dμ=0:

6μm

Density:

4.51g / cc

Melting point:

621℃

Thermal conductivity:

1.1 Wm-1 K-1 at 298 K(3)

Thermal expansion:

48.3×10-6 /℃ at 293K(3)

Hardness:

Knoop 20

Dielectric constant:

5.65 at 1MHz

Young's modulus (E):

5.3GPa

Shear modulus (G):

6.24GPa

Bulk modulus (K):

12.67GPa

Elastic modulus:

C11 = 24.6 C126.7 C44 = 6.24

Apparent elastic limit

5.6 MPa(810psi)

Poisson's ratio:

0.214

Solubility:

44g / 100g water at 0℃

Molecular weight:

259.83

Class/Structure:

Cubic CsCl, Pm3m, no cleavage, deformation

0.5

1.8064

1.0

1.7572

2.0

1.7466

3.0

1.7440

4.0

1.7431

5.0

1.7424

6.0

1.7418

7.0

1.7412

8.0

1.7406

9.0

1.7399

10.0

1.7392

11.0

1.7384

12.0

1.7375

13.0

1.7365

14.0

1.7355

15.0

1.7344

16.0

1.7332

17.0

1.7319

18.0

1.7306

19.0

1.7291

20.0

1.7276

21.0

1.7260

22.0

1.7244

23.0

1.7226

24.0

1.7207

25.0

1.7188

26.0

1.7168

27.0

1.7147

28.0

1.7125

29.0

1.7101

30.0

1.7077

31.0

1.7052

32.0

1.7027

33.0

1.7000

34.0

1.6972

35.0

1.6943

36.0

1.6913

37.0

1.6882

38.0

1.6849

39.0

1.6816

40.0

1.6781

41.0

1.6746

42.0

1.6709

43.0

1.6671

44.0

1.6631

45.0

1.6591

46.0

1.6549

47.0

1.6505

48.0

1.6460

49.0

1.6414

50.0

1.6366