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| Beryllium iodide | |
|---|---|
| Systematic name | Beryllium iodide |
| Identifiers | |
| CAS number | 7787-53-3 |
| Properties | |
| Molecular formula | BeI2 |
| Molar mass | 262.821 g/mol |
| Appearance | colorless needle-like crystals |
| Density | 4.325 g/cm³ |
| Melting point |
510°C |
| Boiling point |
590°C1 |
| Solubility in water | Reacts violently with water1 |
| Solubility | Slightly soluble in CS2 Soluble in ethanol2 |
| Hazards | |
| Main hazards | see Berylliosis |
| Related compounds | |
| Other anions | Beryllium fluoride Beryllium chloride Beryllium bromide |
| Other cations | Magnesium iodide Calcium iodide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references |
|
Beryllium iodide is the chemical compound with the formula BeI2. It is very hygroscopic and reacts violently with water, forming hydroiodic acid.
Reactions
Beryllium iodide can be prepared by reacting beryllium metal with elemental iodine at temperatures of 500°C to 700°C1:
Beryllium iodide is also formed when beryllium carbide with hydrogen iodide in the gas phase:
The iodine in beryllium iodide is easily replaced with the other halogens; it reacts with fluorine giving beryllium fluoride and fluorides of iodine, with chlorine giving beryllium fluoride, and with bromine giving beryllium bromide. The solid and vapor are both flammable in air2.
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References
- ^ a b c Perry, Dale L.; Phillips, Sidney L. (1995), Handbook of Inorganic Compounds, CRC Press, pp. 63, ISBN 0849386713, http://books.google.com/books?id=0fT4wfhF1AsC&printsec=frontcover&dq=%22beryllium+iodide%22+properties&as_brr=3#PPA63,M1, retrieved on 2007-12-10
- ^ a b Parsons, Charles Lathrop (1909), written at Easton, Pa., The Chemistry and Literature of Beryllium, Chemical Publishing, pp. 22–23, http://books.google.com/books?id=7MxAAAAAIAAJ&pg=PA21&dq=%22beryllium+iodide%22&as_brr=3#PPA22,, retrieved on 2007-12-10
Wikipedia content modification information:
- This page was last modified on 29 November 2008, at 03:33.
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