氯化钾 Potassium Chloride (KCl)
Crystallographic
Syngony |
Cubic |
Symmetry Class |
m3m |
Lattice Constants |
a = 6.292 Å c = a |
Cleavability |
(100), perfect |
Optical
Refractive Index at ne |
1.4930 |
Refractive Index at nF' - nC' |
0.0112 |
Refractive Index at n10.6 |
1.4546 |
Refractive Index at n8.0 - n12.5 |
0.0172 |
Thermal Coefficient of Refractive Index at 3.39 microns for ±60 ℃ |
(-3.28 ... -3.75) x 10-5 |
Transmission Range, microns |
0.21 - 21 |
Thermal
Thermal Linear Expansion, ℃-1 for ±60 ℃ |
(34.1 ... 38.3) x 10-6 |
Thermal Conductivity, W/(m * ℃) at 46 ℃ |
6.53 |
Specific Heat Capacity, J/(kg * ℃) |
0.695 x 103 |
Melting Point, ℃ |
776 |
Mechanical
Density, g/cm3 at 20 ℃ |
1.98 |
Mohs Hardness |
2 |
Vickers Microhardness, Pa |
15 x 107 |
Constants of Elastic Compliance, Pa-1 |
S11 = 26.21 x 10-12 S12 = -3.47 x 10-12 S44 = 161.98 x 10-12 |
Young Modulus (E), Pa |
|
in <100> direction |
3.82 x 1010 |
in <110> direction |
1.68 x 1010 |
Shear Modulus (G), Pa |
|
in <100> direction |
1.08 x 1010 |
in <110> direction |
0.63 x 1010 |
Poisson Ratio |
0.134 |
Chemical
Molecular Weight |
74.55 |
Solubility |
|
in water, gram/100 cm3 |
34.7 |
Ref. Index vs. Wavelength λ
Wavelength, Microns |
Refractive Index |
0.2 |
1.7170 |
0.5 |
1.4968 |
1.0 |
1.4796 |
2.0 |
1.4751 |
3.0 |
1.4735 |
4.0 |
1.4720 |
5.0 |
1.4703 |
6.0 |
1.4683 |
7.0 |
1.4659 |
8.0 |
1.4632 |
9.0 |
1.4601 |
10.0 |
1.4566 |
11.0 |
1.4527 |
12.0 |
1.4463 |
12.5 |
1.4460 |
15.0 |
1.4325 |
20.0 |
1.3947 |
30.0 |
1.2626 |
Internal Transmittance τ i (λ) vs. Wavelength λ
Wavelength, Microns |
Internal Transmittance |
0.2 |
0.89 |
0.5 |
0.98 |
1.0 |
0.98 |
3.0 |
0.98 |
5.0 |
0.98 |
6.0 |
0.98 |
7.0 |
0.98 |
8.0 |
0.98 |
9.0 |
0.98 |
10.0 |
0.98 |
12.0 |
0.98 |
15.0 |
0.95 |
20.0 |
0.68 |
Custom sizes and specifications are available on request.