Potassium Bromide

(

KBr

)
Eigenschaften 
Transmission Range

0.21- 33 µm (thickness 2mm)  

Refractive Index

1.55655 @633nm

Reflection Loss 

4.34% @10 µm

Residual Beam Wavelength  

79 µm

Density  

2.7533 g/cm3

Melting point  

730°C

Molecular Weight 

119.01

Thermal Conductivity  

4.8 W/(m·K) @323K

Spec. Heat Capacity  

435 J/(kg·K) @0°C

Thermal Expansion  

43 · 10-6/K (253...333K)

Hardness (Mohs) 

7.0 <100> (Indenter load 200g)  

Young's Modulus 

26.8 GPa

Shear Modulus 

5.08 GPa

Bulk Modulus  

15.03 GPa

Fracture Modulus 

3.3 MPa

Elastic Coefficient 

C11 = 34.5; C12 = 5.4; C44 = 5.08 GPa

Dielectric Constant

4.9 @298K, f = 100 Hz...10 GHz

Solubility in Water 

67.8g/100g @25°C

Crystal Structure  

single crystal, synthetic 

Crystal Type  

cubic, NaCl type structure, a0= 6.5966 Å 

Cleavage Planes 

(100)

Poisson Ratio  

0.3

Application  

IR spectroscopy, FTIR beamsplitters, CO2 laser optics, protective windows

Remarks  

coating available, max. temperature for application: 200°C, sensitive to humidity and soluble with weak alcohol  

Remarkable 
  • Good transmission up to FIR range (33 µm)
  • Very often used in IR spectroscopy as a window material
  • Application as an FTIR beam splitter
  • A diameter of 160 mm is the maximum size of our optics
NOTE: Despite careful research, we do not accept any liability for the correctness of the information provided. Liability claims based on the use of the information are excluded in principle.

Potassium Bromide: Korth Kristalle - Vom Rohkristall zur hochpräzisen Optik. Durchblick für alle Wellenlängen - Seit 72 Jahren züchten wir Kristalle und fertigen daraus hochpräzise optische Komponenten für alle Wellenlängen vom IR- bis zum VUV-Bereich. Unsere Produkte kommen in allen Bereichen zum Einsatz, in denen eine hochentwickelte, präzise technische Ausstattung unerlässlich ist – von der Analytik bis hin zur Medizin- und Raumfahrttechnik.

Contact/Inquiry

Korth Kristalle

Am Jägersberg 3
24161 Altenholz

+49 (0)431 - 36 90 50
+49 (0)431 - 36 90 525

info@korth.de


Contact

Remarkable

  • Good transmission up to FIR range (33 µm)
  • Very often used in IR spectroscopy as a window material
  • Application as an FTIR beam splitter
  • A diameter of 160 mm is the maximum size of our optics