Korth Kristalle GmbH

Refractive Index


Rubidium Iodide (



Properties (RbI)    
Transmission Range (50% of total tranmission)  0,26 - 50 µm (thickness 2mm)  
Refractive Index   1,64233 @633 nm  
Reflective Loss   5,44% @10 µm 
Density   3.55 g/cm3  
Melting Point   656°C  
Molecular Weight   212.372  
Thermal Conductivity   9.9 W/(m·K)  
Heat Capacity   242,6 J/(kg·K) @10°C  
Thermal Expansion   39 · 10-6/K @293K  
Hardness (Mohs)    
Young`s Modulus    
Shear Modulus    
Bulk Modulus    
Rupture Modulus    
Elastic Coefficient   C11 = 25.6; C12 = 3.7; C44 = 2.79 GPa 
Dielectric Constant   4,94 (298K) 
Solubility in Water   165 g/100 g @25°C 
Crystal Structure  Single crystal, synthetic  
Crystal Type  Cubic, NaCl type structure, a0 = 7.342 Å  
Cleavage Planes   (100) 
Poisson Ratio    
Application   IR optics 

Transmission spectrum


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