Sodium Chloride
NaCl
Sodium Chloride

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)

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

Application

material for IR optic, CO2 laser windows

Remarks

soluble in glycerol, slightly soluble in alcohol and aquos ammonia, insoluble in HCl