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See all 8 Products in Family

20mm Dia x 2mm Thickness Uncoated, Potassium Bromide Window

Stock #68-806

S$104.63

Qty 1-10
S$104.63

Qty 11
S$94.55

Volume Pricing
Request Quote

eDrawings: eprt IGES PDF Drawings STEP: step

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Abbe Number (v_d):

33.64

Bevel:

Protective as needed

Diameter (mm):

20.00 ±0.50

Thickness (mm):

2.00 ±0.50

Coating:

Uncoated

Coefficient of Thermal Expansion CTE (10^-6/°C):

Density (g/cm³):

2.753

Edges:

Fine Ground

Index of Refraction n_d:

1.56

Knoop Hardness (kg/mm²):

Poisson's Ratio:

0.203

Solubility, in 100g of H₂O @ 273K (g):

53.48

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

KBr

Surface Quality:

60-40

Type:

Protective Window

Wavelength Range (nm):

250 - 26000

Young's Modulus (GPa):

26.8

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Product Family Description

Excellent Transmission from 250nm – 26μm
Good Resistance to Mechanical Shock
Ideal for FTIR Spectroscopy
Sodium Chloride (NaCl) Windows Also Available

Potassium Bromide (KBr) is a material commonly used in FTIR spectroscopy. KBr has a slightly larger spectral range than Sodium Chloride (NaCl) and has excellent transmission from 250nm – 26μm. Its index of refraction varies from 1.46 - 1.59 over this range. KBr is water soluble and its surfaces should be protected from exposure to moisture. Exposure to moisture will degrade the surface of the window. Potassium Bromide windows provide good resistance to mechanical shock, can be easily cleaved and can be used in temperatures up to 300°C. KBr has a density of 2.75g/cm³ and a Knoop Hardness of 7.0.

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