KRS-5 (Tl(Br-J))
| Properties (KRS-5) | |
| Transmission Range | 0.6 ... 40 µm |
| Refractive Index | 2.37069 @10.0 µm |
| Reflective Loss | 28.4 % @10.0 µm |
| Reststrahlen | 170 µm (max. Reflection) |
| Density | 7.371 g/cm3 |
| Melting Point | 414.5°C |
| Molecular Weight | 42% TlBr, 58% TlI |
| Thermal_Conductivity | 0.544 W/(m·K) @20°C |
| Specific Heat | 151 J/(kg·K) |
| Thermal Expansion | 58.0 · 10-6 /°C @20...100°C |
| Hardness (Mohs) | 40.2 (100); 33.2 (110) (Indenter load: 200g) |
| Young`s Modulus | 15.85 GPa |
| Shear Modulus | 5.79 GPa |
| Bulk Modulus | 19.78 GPa |
| Rupture Modulus | 25.9 MPa |
| Elastic Coefficient | C11 = 33.1; C12 = 13.2; C44 = 5.79 GPa |
| Dielectric Constant | 32.5 ... 32.9 @25°C; f= 100 Hz...10 MHz |
| Solubility in Water | 0.05g / 100g @20°C |
| Type of Material | TlBr: 42%, TlJ: 58% |
| Crystal Structure | cubic, CsCl type structure |
| Cleavage Planes | none |
| Standard Diameter | 70 mm - 100 mm |
| Application | ATR Material (Atenuated Total Reflection Plates), IR optics |
| Remarks | Attention: Thallium salts are toxic. Because of the low water-solubility only little danger when handling with spectroscopy. KRS-5 is soluble in some organic barren (Ethylenglykol, Dimethylsulfoxide, 1,2-Propandiamin), complexing agents and strong basics. Max. temperature for application: 200°C, easy deformable (cold liquidity). |
Transmission spectrum
UV transmission spectrum
Datasheet
krs52002eng.pdf (19.0 kB)
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This symbol denotes crystal grown in-house.