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Thallium Chloride (TlCl)

♦ Thallium Chloride (TlCl) Data Sheet    ♦ Thallium Chloride (TlCl) MSDS

Thallium Chloride has very little practical application.

Transmission Range :0.5 to 30 μm
Refractive Index :2.193 at 10 μm (1)
Reflection Loss :24.5% at 10 μm (2 surfaces)
Absorption Coefficient :n/a
Reststrahlen Peak :131 μm
dn/dT :n/a
dn/dμ = 0 :3.5 μm
Density :7.018 g/cc (1)
Melting Point :430.2 °C (1)
Thermal Conductivity :0.75 W m-1 K-1 at 311K
Thermal Expansion :53 x 10-6 /K at 300K
Hardness :Knoop 12.8 with 500g indenter
Specific Heat Capacity :218 J Kg-1 K-1
Dielectric Constant :31.9 at 1 MHz
Youngs Modulus (E) :31.71 GPa (2)
Shear Modulus (G) :7.58 GPa (2)
Bulk Modulus (K) :23.57 GPa (2)
Elastic Coefficients :C11=40.1; C12=15.3; C44=7.6 (2)
Apparent Elastic Limit :20.7 MPa (3000 psi)
Poisson Ratio :0.276
Solubility :0.32g/100g water at 20°C
Molecular Weight :239.85
Class/Structure :Cubic CsCl, Pm3m, no cleavage planes (1)

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
0.436   2.40.546   2.270.578   2.253
0.589   2.2470.650   2.2230.750   2.198
10.00   2.193

Thallium Chloride crystals are grown by sealed-ampoule Stockbarger technique. Thallium salts are toxic, and Thallium Chloride has enough solubility to require extreme caution. Careful handling with plastic gloves covered with soft cotton gloves as appropriate to delicate optics is required

(1) Handbook of Optical Constants, ed Palik, V3, ISBN 0-12-544423-0
(2) Arenberg, Measurements made at Naval Research Labs, USA 1948-49