BaF2
Barium Fluoride
Optical Transmission
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Spectral Range: 0.15 to 12 µm
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Wave Number Range: 66,666 to 833 cm^-1​​
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Note: BaF2 is one of the few materials that performs exceptionally well in both the Ultraviolet and Infrared spectrums. It is commonly used as a window for VUV spectroscopy and as a substrate for thermal imaging systems.
Solubility & Handling
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Solubility: 0.12 g / 100g water at 20°C
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Environmental Stability:While it is slightly more soluble than Calcium Fluoride, it is considered non-hygroscopic for most laboratory applications. It does not "fog" under normal humidity, but prolonged exposure to moisture should be avoided.
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Chemical Stability: Resistant to most acids and alkalis; however, it can be etched by aluminum salts and ammonium compounds.
Thermal & Mechanical Properties
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Melting Point: 1,280°C
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Thermal Shock Resistance:Highly sensitive. BaF2 has a high coefficient of thermal expansion, meaning it will crack easily if heated or cooled too rapidly.
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Mechanical Hardness: * Knoop Hardness: 82
