Potassium Bromide - KBr
lenses, windows, mirrors, filters and prisms
Click here to download PDF version of this page.Used widely as infrared optical windows and components for general spectroscopy because of its wide spectral range. Also used as infrared beamsplitters or interferometers substrates. KBr is water soluble and polished surfaces should be protected against moisture attack.
| Transmission Range | 0.23 - 25.0 µ |
| Crystal Structure | Rock Salt |
| Cleavage Plane | 100 |
| Colour | colourless |
| Density | 2.75 (23°) |
| Melting Point (°) | 730 |
| Reflection Loss | 8.4% (10µ) for 2 surfaces |
| Solubility index | 65.2gm/100gm / 20°C/TD> |
| Hardness (Knoop) | 5.9(110) 7.0(100) |
| Thermal Conductivity (cal/cm sec°C) | 1.15x10-2 (46°C) |
| Thermal Expansion coefficient (/°C) | 43x10-6(20 - 60°C) |
Whilst every effort has been made to verify the data provided, no responsibility can be accepted for its accuracy