KBr Potassium Bromide

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

Rupture 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.

KBr – 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