Beryllium selenide

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Crystal structure
Structure of beryllium selenide
__ Be 2+      __ Se 2−
General
Surname Beryllium selenide
other names

Beryllium (II) selenide

Ratio formula BeSe
Brief description

gray mass

External identifiers / databases
CAS number 12232-25-6
EC number 235-450-9
ECHA InfoCard 100.032.216
PubChem 82990
Wikidata Q829303
properties
Molar mass 87.97 g mol −1
Physical state

firmly

density

4.315 g cm −3

solubility

soluble in water

safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary
09 - Dangerous for the environment 08 - Dangerous to health 06 - Toxic or very toxic

danger

H and P phrases H: 301-315-319-317-330-335-372-410-350i
P: ?
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) . Template: room group / 216

Individual evidence

  1. 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).
  2. Template: CL Inventory / harmonized Harmonized 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.
  3. 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 .
  4. 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.