KRS-6 (Thallium Bromide/Chloride)

lenses, windows, mirrors, filters and prisms

 

Used for infrared windows and lenses for application out to 20 microns. KRS-6 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 0.4 – 32.0 microns
Crystal Structure Caesium chloride
Cleavage Plane None
Colour colourless
Density 7.19
Melting Point (°) 423.5 °C
Reflection Loss 24.2% (10 microns)
Solubility index 0.32gm/100gm water at 20 ° C
Hardness (Knoop) 29.9
Thermal Conductivity (cal/cm sec°C) 0.0017 at 56 °C
Thermal Expansion coefficient (/°C) 50 x 10 -6 /°C