Beryllium selenide
Crystal structure | ||||||||||||||||
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__ Be 2+ __ Se 2− | ||||||||||||||||
General | ||||||||||||||||
Surname | Beryllium selenide | |||||||||||||||
other names |
Beryllium (II) selenide |
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Ratio formula | BeSe | |||||||||||||||
Brief description |
gray mass |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 87.97 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
4.315 g cm −3 |
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solubility |
soluble in water |
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safety instructions | ||||||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Beryllium selenide is an inorganic chemical compound of beryllium from the group of selenides .
Extraction and presentation
Beryllium selenide can be obtained by reacting beryllium with selenium at 1100 ° C in a hydrogen stream.
properties
Beryllium selenide is a very brittle gray crystalline mass that is soluble in water. The solution turns reddish due to the formation of selenium. Beryllium selenide crystallizes in the cubic zinc blende type with the space group F 4 3 m (space group no. 216) .
Individual evidence
- ↑ a b c d e Jean D'Ans, Ellen Lax: Paperback for chemists and physicists . Springer DE, 1997, ISBN 3-540-60035-3 , pp. 336 ( limited preview in Google Book search).
- ↑ classification and labeling of beryllium compounds with the exception of aluminum beryllium silicates, and with those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on March 18, 2017. Harmonized
- ↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling it falls under the group entries on beryllium compounds with the exception of aluminum beryllium silicates, and with those specified elsewhere in this Annex and selenium compounds with the exception of cadmium sulphoselenide and those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on March 18, 2017. Manufacturers or distributors can expand the harmonized classification and labeling .
- ↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 896.