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Thallium Bromide (TlBr)

♦ Thallium Bromide (TlBr) Data Sheet  ♦ Thallium Bromide (TlBr) MSDS

Thallium Bromide has very little practical application.

Transmission Range :0.5 to 40 μm
Refractive Index :2.338 at 10 μm (1)
Reflection Loss :27.7% @ 10 μm
Absorption Coefficient :n/a
Reststrahlen Peak :172 μm
dn/dT :n/a
dn/dμ = 0 :8.5 μm
Density :7.453 g/cc
Melting Point :460 °C
Thermal Conductivity :0.586 W m-1 K-1 at 343K
Thermal Expansion :51 x 10-6 /°C at 300K
Hardness :Knoop 11.9 with 500g indenter
Specific Heat Capacity :188 J Kg-1 K-1 (3)
Dielectric Constant :30.3 at 1 MHz
Youngs Modulus (E) :29.5 GPa (2)
Shear Modulus (G) :7.58 GPa (2)
Bulk Modulus (K) :22.47 GPa (2)
Elastic Coefficients :C11=37.8; C12=14.8; C44=7.56 (2)
Apparent Elastic Limit :20.7 MPa (3000 psi)
Poisson Ratio :0.281
Solubility :0.05g/100g water ar 25°C
Molecular Weight :248.31
Class/Structure :Cubic CsCl, Pm3m, no cleavage

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
0.438   2.6520.546   2.4520.578   2.424
0.650   2.3840.750   2.35010.00   2.338

Thallium Bromide crystals are grown by sealed-ampoule Stockbarger technique. Thallium salts are toxic, and Thallium Bromide 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
(3) Kelly, Bureau of Mines Bulletin, No 371, p51. 1934