Silver Chloride AgCl

Silver Chloride (AgCl) SDS
Silver Chloride (AgCl) Data Sheet

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 K-1
dn/dμ = 0
4.5 μm
Density
5.59 g/cc
Melting Point
457°C
Thermal Conductivity
1.15 W m-1 K-1 @ 278 K
Thermal Expansion
31 x 10-6 K-1 @ 302 K
Hardness
Knoop 9.5 with 200g indenter
Specific Heat Capacity
355 J Kg-1 K-1
Dielectric Constant
12.3 at 1 MHz
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
26.2 MPa (3800psi)
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
 

 

µm No
0.5 2.09658
1.0 2.02239
1.5 2.01047
2.0 2.00615
2.5 2.00386
3.0 2.0023
3.5 2.00102
4.0 1.99983
4.5 1.99866
5.0 1.99745
5.5 1.99618
6.0 1.99483
6.5 1.99339
7.0 1.99185
   
µm No
7.5 1.99021
8.0 1.98864
8.5 1.98661
9.0 1.98464
9.5 1.98255
10.0 1.98034
10.5 1.97801
11.0 1.97556
12.0 1.97026
12.5 1.96742
13.0 1.96444
13.5 1.96133
14.0 1.95807
14.5 1.95467
µm No
15.0 1.95113
15.5 1.94743
16.0 1.94358
16.5 1.93958
17.0 1.99354
17.5 1.93109
18.0 1.9266
18.5 1.92194
19.0 1.91710
19.5 1.91208
20.0 1.90688
20.5 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

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