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KRS6 Thallium Bromo-Chloride (TlBr-TlCl)

♦ KRS6 Thallium Bromo-Chloride (TlBr-TlCl) Data Sheet   ♦ KRS6 Thallium Bromo-Chloride (TlBr-TlCl) MSDS

KRS-6 has few applications. Occasionally, it is required for research.

Transmission Range :0.4 to 30 μm
Refractive Index :2.1723 at 11 μm (1)(3)
Reflection Loss :24.0% at 11 μm (2 surfaces)
Absorption Coefficient :n/a
Reststrahlen Peak :91.5 μm
dn/dT :n/a
dn/dμ = 0 :5 μm
Density :7.18 g/cc (3)
Melting Point :423 °C (3)
Thermal Conductivity :0.7 W m-1 K-1 at 329K
Thermal Expansion :50 x 10-6 /°C (2)
Hardness :Knoop 29.9 with 500g indenter (2)
Specific Heat Capacity :188 J Kg-1 K-1
Dielectric Constant :32 at 1 MHz
Youngs Modulus (E) :20.68 GPa (2)
Shear Modulus (G) :8.48 GPa (2)
Bulk Modulus (K) :22.81 GPa (2)
Elastic Coefficients :C11=38.5; C12=14.9; C44=7.37
Apparent Elastic Limit :20.7 MPa (3000 psi)
Poisson Ratio :0.219
Solubility :0.3g/100g water at 20°C
Molecular Weight :40 mole% TlBr; 60 mole% TlCl
Class/Structure :Cubic, CsCl structure, Pm3m, no cleavage (3)

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
0.6   2.32940.7   2.29820.8   2.2660
0.9   2.2511.0   2.24041.5   2.2148
2.0   2.20593.0   2.1994.0   2.1956
5.0   2.19286.0   2.1907.0   2.187
8.0   2.18399.0   2.180510.0   2.1767
11.0   2.172312.0   2.167413.0   2.162
14.0   2.156315.0   2.150416.0   2.1442
17.0   2.137718.0   2.130919.0   2.1236
20.0   2.115421.0   2.106722.0   2.0976
23.0   2.086924.0   2.0752

KRS-6 crystals are grown by the sealed-ampoule Stockbarger technique. Starting materials of the highest purity are selected to ensure that there are no anionic absorption bands between 2 and 16 microns and all crystals are checked for quality by using a pathlength of 120mm. Thallium salts are toxic, and KRS6 has enough solubility to require extreme caution. Careful handling with plastic gloves covered with soft cotton gloves as appropriate to delicate optics is required.

REFERENCES:
(1) Hettner and Leisegang; Optik, V3, p305, 1948
(2) Combes, Ballard, McCarthy: J.Opt Soc.Am. V41, p 215, 1951
(3) Handbook of Optical Constants, ed Palik, V3, ISBN 0-12-544423-0