25mm Dia. x 2mm Thickness Uncoated, Sodium Chloride Window

Volume Pricing
Qty 1-10	£62.00 each
Qty 11-25	£56.00 each
Qty 26-49	£52.40 each
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Specifications

General

Type:

Protective Window

Type of Window:

Crystal

Physical & Mechanical Properties

Diameter (mm):

25.00 ±0.50

Thickness (mm):

2.00 ±0.50

Dimensional Tolerance (mm):

±0.50

Bevel:

Protective as needed

Edges:

Fine Ground

Poisson's Ratio:

0.25

Young's Modulus (GPa):

39.98

Knoop Hardness (kg/mm²):

18.20

Optical Properties

Coating:

Uncoated

Sodium Chloride (NaCl)

Index of Refraction (n_d):

1.544

Surface Quality:

60-40

Abbe Number (v_d):

42.89

Wavelength Range (nm):

250 - 16000

Material Properties

Density (g/cm³):

2.17

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

44

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

35.70

Regulatory Compliance

RoHS 2015:

Compliant

Reach 219:

Compliant

Certificate of Conformance:

View

Product Details

Excellent Transmission from 250nm – 16μm
Low Cost
Ideal for FTIR Spectroscopy
Potassium Bromide (KBr) Windows Also Available

Sodium Chloride (NaCl) Windows are ideal for FTIR spectroscopy. Sodium Chloride (NaCl) is a material commonly used in FTIR spectroscopy. NaCl is a relatively low-cost cubic crystalline material that has excellent transmission from 250nm – 16μm. Sodium Chloride (NaCl) Windows, over this large spectral range, have an index of refraction that ranges between 1.4 - 1.6. It is hygroscopic by nature and thus samples should not contain water. The windows are sensitive to thermal shock but can be used in temperatures up to 400°C. NaCl has a density of 2.17 g/cm3 and a Knoop Hardness of 18.2.

Technical Information

Chart showing Sodium Chloride transmission percentage across wavelengths from 0.2 to 20 micrometers

Special Handling

These optics require special handling to avoid damage and ensure long-term performance. Proper handling, cleaning, and storage are essential to maintain optical quality. Explore our Optics Cleaning Resources for step-by-step guides and best practices. For personalized assistance, Email us or Chat with our technical support team.