Potassium Bromide (KBr) Optical Windows
KBr

Potassium Bromide (KBr) Optical Windows

Price range: $132.25 through $483.08

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Potassium Bromide (KBr) Optical Windows / Infrared KBr Crystal Windows

Product Overview
Potassium Bromide (KBr) is an infrared optical crystal used in FTIR spectroscopy and infrared optical systems. It offers transmission over a broad infrared wavelength range and is used for IR windows, beam splitters, and spectroscopy sample windows.

KBr is hygroscopic and must be handled and stored in dry environments.

Optical Transmission
Transmission Range: 0.2 – 25 μm
Typical Transmission: >92% (within 0.2 – 25 μm range)

Physical Properties
Refractive Index (nD): 1.559
Refractive Index at 10 μm: 1.525
Density: 2.75 g/cm³
Melting Point: 730 °C
Mohs Hardness: 2
Cleavage Plane: [100]
Solubility in Water: 53.5 g / 100 g H₂O
Thermal Expansion Coefficient: 3.76 × 10⁻⁵ / °C
Thermal Conductivity: 0.0115 cal / (cm·s·°C)

Features
Wide infrared transmission range
Optical transparency
For FTIR applications
Low absorption in IR region
Machinable and polishable

Handling Notes
KBr is highly hygroscopic.
Store in dry, moisture-free conditions.
Avoid exposure to humidity.
Handle with gloves to prevent surface damage.
Not recommended for humid environments without protective measures.

Typical Applications
FTIR spectroscopy
Infrared optical windows
IR beam splitters
Spectroscopy sample holders
Infrared optical instruments

Customization
Custom sizes and thickness available
Single-side or double-side polished
Custom shapes available upon request
OEM processing supported

Packaging
Moisture-proof packaging
Vacuum sealed protection
Individual protective box

Option 1

32 × 20 × 5 mm, 41 × 23 × 4 mm, Dia. 13 mm × 2 mm, Dia. 15 mm × 2 mm, Dia. 20 mm × 4 mm, Dia. 25 mm × 4 mm, Dia. 30 mm × 5 mm, Dia. 32 mm × 3 mm, Dia. 35 mm × 5 mm, Dia. 40 mm × 5 mm, Dia. 45 mm × 3 mm, Dia. 47 mm × 3 mm, Dia. 50 mm × 3 mm, Dia. 50 mm × 6 mm, Dia. 52 mm × 6 mm, Dia. 60 mm × 6 mm

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