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Products › Materials › Potassium Chloride (KCl)
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Potassium Chloride (KCl) |
| Potassium Chloride is mainly used for CO2 laser protection windows as an inexpensive disposable material with a low refractive index. |
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Product Data |
| Transmission Range : |
0.21 to 20 μm |
| Refractive Index : |
1.45644 at 10 μm (2) |
| Reflection Loss : |
6.7% at 10 μm |
| Absorption Coefficient : |
6.5 x 10-3 cm-1 at 10.6 μm @ 300K (6) |
| Reststrahlen Peak : |
63.1 μm |
| dn/dT : |
-33.2 x 10-6 /°C (1) |
| dn/dμ = 0 : |
n/a |
| Density : |
1.99 g/cc |
| Melting Point : |
776°C |
| Thermal Conductivity : |
6.53 W m-1 K-1 at 322K (3) |
| Thermal Expansion : |
36 X 10-6 /k at 300k |
| Hardness : |
Knoop 7.2 <110>, 9.3 <100> with 200g (4) |
| Specific Heat Capacity : |
690 J Kg-1 K-1 |
| Dielectric Constant : |
4.64 at 1MHz at 300K |
| Youngs Modulus (E) : |
29.67 GPa (4) |
| Shear Modulus (G) : |
6.24 GPa (4) |
| Bulk Modulus (K) : |
17.36 GPa (4) |
| Elastic Coefficients : |
C11=39.8; C12=6.2; C44=6.25 (5) |
| Apparent Elastic Limit : |
4.4 MPa (635 psi) (4) |
| Poisson Ratio : |
0.216 |
| Solubility : |
34.7g/100g water |
| Molecular Weight : |
74.55 |
| Class/Structure : |
Cubic FCC, NaCl, Fm3m, (100) cleavage |
To download this data or our MSDS safety data sheet as a pdf, please click on the links at the top of the page. To expand the transmission graphs, please click on the image.
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Refractive Index |
| µm |
No |
µm |
No |
µm |
No |
| 0.185 |
1.8271 |
0.200 |
1.7187 |
0.251 |
1.5897 |
| 0.308 |
1.54136 |
0.410 |
1.50907 |
0.509 |
1.4962 |
| 0.671 |
1.48669 |
0.883 |
1.48142 |
0.982 |
1.4800 |
| 1.179 |
1.47831 |
2.357 |
1.47475 |
2.947 |
1.47383 |
| 3.536 |
1.47305 |
4.715 |
1.47112 |
5.000 |
1.47048 |
| 6.000 |
1.46842 |
7.000 |
1.466 |
8.000 |
1.4629 |
| 9.000 |
1.46002 |
10.00 |
1.45644 |
11.00 |
1.45244 |
| 12.00 |
1.44801 |
13.00 |
1.44313 |
14.00 |
1.43779 |
| 15.00 |
1.43197 |
16.00 |
1.42563 |
17.00 |
1.41877 |
| 18.00 |
1.41134 |
19.00 |
1.40333 |
20.00 |
1.39469 |
| 21.00 |
1.38538 |
22.00 |
1.37537 |
23.00 |
1.36461 |
| 24.00 |
1.35303 |
25.00 |
1.34059 |
26.00 |
1.32721 |
| 27.00 |
1.31281 |
28.00 |
1.29731 |
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Product Notes |
Potassium Chloride is produced in large ingots by the Kyropoulos growth method. Potassium Chloride cleaves easily. With care Potassium Chloride can be polished to a high standard under humidity controlled conditions.
REFERENCES:
(1) Mentzel; Z. Physik. V 88, p178. 1934
(2) H.H.Li; RI of Alkali Halides. J. Phys and Chem Reference Data V5(2), p421, 1976
(3) Ballard, McCarthy & Davis; Rev. Sci. Insts, V21, p905, 1970
(4) Combes, et.al.; J.Opt. Soc. Am. V41, p215, 1951.
(5) Galt; Phys.Rev. V36, p1460, 1948
(6) H.H.Li, Absorption Coefficients, Int.J.Therm, V1, No. I, 1980
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Data provided is extracted from our technical handbook of materials. While every attempt has been made to verify the source of the information, Crystran Ltd accept no responsibility for accuracy of data |
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