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Silver Chloride (AgCl)

♦ Silver Chloride (AgCl) Data Sheet    ♦ Silver Chloride (AgCl) MSDS

Silver Chloride is a useful material for deep IR applications where sensitivity to moisture is a problem. This soft crystal deforms under heat and pressure and can be forged in polished dies to create IR windows and lenses. A major use for Silver Chloride is in the manufacture of small disposable cell windows for spectroscopy, known as mini-cells. These windows have a depression of controlled thickness pressed into the surface. The inherent cost of Silver Chloride material is offset against ease of manufacture.

Transmission Range :0.4 to 25 μm (1)
Refractive Index :1.98 at 10 μm (1)
Reflection Loss :19.5% at 10 μm (2 surfaces)
Absorption Coefficient :n/a
Reststrahlen Peak :81.5 μm
dn/dT :-61 x 10-6 /°C
dn/dμ = 0 :4.5 μm
Density :5.59 g/cc
Melting Point :457 °C
Thermal Conductivity :1.15 W m-1 K-1 at 278 K
Thermal Expansion :31 x 10-6 /°C at 302 K
Hardness :Knoop 9.5 with 200g indenter
Specific Heat Capacity :355 J Kg-1 K-1
Dielectric Constant :12.3 at 1MHz
Youngs Modulus (E) :19.98 GPa
Shear Modulus (G) :7.099 GPa
Bulk Modulus (K) :44.04 GPa
Elastic Coefficients :C11=60.1 C12=36.2 C44=6.25
Apparent Elastic Limit :26.2MPa (3800 psi)
Poisson Ratio :0.4
Solubility :52 x 10-6 g/100g water at 50°C
Molecular Weight :143.34
Class/Structure :Cubic FCC, NaCl, Fm3m, No cleavage, cold flows

 To download this data or our MSDS safety data sheet as a pdf, please click on the links at the top of the page.  To expand the transmission graphs, please click on the image.


µm   Noµm   Noµm   No
0.500   2.096581.000   2.022391.500   2.01047
2.000   2.006152.500   2.003863.000   2.0023
3.500   2.001024.000   1.999834.500   1.99866
5.000   1.997455.500   1.996186.000   1.99483
6.500   1.993397.000   1.991857.500   1.99021
8.000   1.988478.500   1.986619.000   1.98464
9.500   1.9825510.00   1.9803410.50   1.97801
11.00   1.9755611.50   1.9729712.00   1.97026
12.50   1.9674213.00   1.9644413.50   1.96133
14.00   1.9580714.50   1.9546715.00   1.95113
15.50   1.9474316.00   1.9435816.50   1.93958
17.00   1.9354217.50   1.9310918.00   1.9266
18.50   1.9219419.00   1.9171019.50   1.91208
20.00   1.9068820.50   1.90149

Silver Chloride is grown into small ingots by the sealed-ampoule Stockbarger techniques. Silver chloride is malleable and milky-white it darkens in sunlight, but mild darkening does not affect the IR performance.

REFERENCES:
(1) Handbook of Optical Constants, ed Palik, V3, ISBN 0-12-544423-0