KRS-5 (Thallium Bromide Iodide)
lenses, windows, mirrors, filters and prisms
KRS-5 (Thallium Bromide Iodide) is used for ATR (attenuated total reflection) prisms, infrared windows and lenses from 0.6-40 microns. KRS-5 is only slightly soluble in water but can be attacked by some solvents and acids. This material is relatively soft and care should be taken during handling and processing.
Caution: Thallium compounds are classified as toxic and must be handled with care.
| Transmission Range | 0.6 – 40.0 µ |
| Crystal Structure | Caesium chloride |
| Cleavage Plane | None |
| Colour | Deep Red |
| Density | 7.371 (16°) |
| Melting Point (°) | 414.5 |
| Reflection Loss | 28.4% (10µ) for 2 surfaces |
| Solubility index | 0.02gm/100gm water / 10°C |
| Hardness (Knoop) | 40.2 |
| Thermal Conductivity (cal/cm sec°C) | 1.3×10-3 (20°C) |
| Thermal Expansion coefficient (/°C) | 58×10-6 (20-100°C) |
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Whilst every effort has been made to verify all data provided, no responsibility can be accepted for its accuracy.