Sodium Chloride (NaCl)
Crystal properties | ||
Crystal Type | cubic | ![]() |
Transmission Range | 0.21 ... 26 µm | |
Refractive Index | 1.49980 @ 9,5 µm | |
Reflective Loss | 7.5 % @ 10.0 µm | |
Reststrahlen | 50.1 µm | |
Density | 2.165 g/cm3 | |
Melting Point | 801 °C | |
Molecular Weight | 58.443 | |
Thermal Conductivity | 6.49 W/(m K) | |
Specific Heat | 854 J/(kg K) | |
Thermal Expansion | 44×10–6 / K @ –50...200 °C | |
Hardness (Knoop) | 15.2 <110> 18.2 <100> (indenter load: 200 g) |
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Young’s Modulus | 39.98 GPa | |
Shear Modulus | 12.61 GPa | |
Bulk Modulus | 24.42 GPa | |
Rupture Modulus | 2.38 Mpa | |
Elastic Coefficient | C11 = 48.7 / C12 = 12.6 / C44 = 12.75 GPa | |
Dielectric Constant | 5.9 @ 25 °C, f = 100 Hz...25 GHz | |
Solubility in Water | 35.7 g / 100 g @ 0 °C | |
Cleavage Planes | (100) | |
Standard Diameter | 180 mm larger diameters on request |
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Application | material for IR optic, CO2 laser windows | |
Remarks | soluble in glycerol, slightly soluble in alcohol and aquos ammonia, insoluble in HCl | |
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