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Abbe Number (vd):
42.89
Bevel:
Protective as needed
Diameter (mm):
20.00 ±0.50
Thickness (mm):
2.00 ±0.50
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
44
Density (g/cm3):
2.17
Edges:
Fine Ground
Index of Refraction nd:
1.544
Knoop Hardness (kg/mm2):
18.2
Poisson's Ratio:
0.252
Solubility, in 100g of H2O @ 273K (g):
35.70
Substrate:
Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Sodium Chloride (NaCl) Windows are ideal for FTIR spectroscopy. Sodium Chloride (NaCl) is a material commonly used in FTIR spectroscopy. NaCl is a relatively low-cost cubic crystalline material that has excellent transmission from 250nm – 16μm. Sodium Chloride (NaCl) Windows, over this large spectral range, have an index of refraction that ranges between 1.4 - 1.6. It is hygroscopic by nature and thus samples should not contain water. The windows are sensitive to thermal shock but can be used in temperatures up to 400°C. NaCl has a density of 2.17 g/cm3 and a Knoop Hardness of 18.2.
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