3D model (JSmol)
|Molar mass||284.287 g/mol|
|Appearance||yellow crystalline solid|
|Melting point||460 °C (860 °F; 733 K)|
|Boiling point||819 °C (1,506 °F; 1,092 K)|
|0.59 g/L (25 °C)|
Refractive index (nD)
|2.418 (0.59 µm)|
2.350 (0.75 µm)
2.289 (1 µm)
1.984 (5 µm)
2.322 (20 µm)
|Pm3m, No. 221|
Formula units (Z)
|Very toxic (T+)|
Dangerous for the environment (N)
|R-phrases (outdated)||R26/28, R33, R51/53|
|S-phrases (outdated)||(S1/2), S13, S28, S45, S61|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Thallium(I) bromide is a chemical compound of thallium and bromine with a chemical formula TlBr. It is used in room-temperature detectors of X-rays, gamma-rays and blue light, as well as in near-infrared optics.
The crystalline structure is of cubic CsCl type at room temperature, but it lowers to the orthorombic thallium iodide type upon cooling, the transition temperature being likely affected by the impurities. Nanometer-thin TlBr films grown on LiF, NaCl or KBr substrates exhibit a rocksalt structure.
Thallium is extremely toxic and a cumulative poison which can be absorbed through the skin. Acute and chronic effects of ingesting thallium compounds include fatigue, limb pain, peripheral neuritis, joint pain, loss of hair, diarrhea, vomiting and damage to central nervous system, liver and kidneys.
- Haynes, p. 4.94
- Haynes, p. 4.135
- Haynes, p. 10.242
- Schulz, L. G. (1951). "Polymorphism of cesium and thallium halides". Acta Crystallographica. 4 (6): 487–489. doi:10.1107/S0365110X51001641.
- Temperature Dependence of Spectroscopic Performance of Thallium Bromide X- and Gamma-Ray Detectors
- Blackman, M; Khan, I H (1961). "The Polymorphism of Thallium and Other Halides at Low Temperatures". Proceedings of the Physical Society. 77 (2): 471. doi:10.1088/0370-1328/77/2/331.
- Thallium Bromide Material safety data sheet. espimetals.com
- Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. ISBN 1439855110.
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