Strontium oxide

Strontium oxide[1]
__ Sr2+     __ O2−
Names
IUPAC name
Strontium oxide
Other names
Strontia
Identifiers
3D model (JSmol)
ECHA InfoCard 100.013.837 Edit this at Wikidata
EC Number
  • 215-219-9
UNII
  • InChI=1S/O.Sr/q-2;+2
  • [O-2].[Sr+2]
Properties
SrO
Molar mass 103.619 g/mol
Appearance colorless cubic crystals
Density 4.70 g/cm3
Melting point 2,531 °C (4,588 °F; 2,804 K)
Boiling point 3,200 °C (5,790 °F; 3,470 K) (decomposes)
reacts, forms Sr(OH)2
Solubility miscible with potassium hydroxide
slightly soluble in alcohol
insoluble in acetone and ether
−35.0·10−6 cm3/mol
1.810 [2]
Structure
Halite (cubic), cF8
Fm3m, No. 225
Octahedral (Sr2+); octahedral (O2−)
Thermochemistry
44.3 J·mol−1·K−1
57.2 J·mol−1·K−1
-592.0 kJ·mol−1
Hazards
Flash point Non-flammable
Related compounds
Other anions
Strontium sulfide
Other cations
Beryllium oxide
Magnesium oxide
Calcium oxide
Barium oxide
Related compounds
Strontium hydroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Strontium oxide or strontia, SrO, is formed when strontium reacts with oxygen. Burning strontium in air results in a mixture of strontium oxide and strontium nitride. It also forms from the decomposition of strontium carbonate SrCO3. It is a strongly basic oxide.

  1. ^ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–87. ISBN 0-8493-0594-2.
  2. ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8