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Strontium oxide
IUPAC name	Strontium oxide
Other names	Strontia
Identifiers
CAS number	1314-11-0
Properties
Molecular formula	SrO
Molar mass	103.62 g/mol
Appearance	colorless cubic crystals
Density	4.70 g/cm3
Melting point	2531°C
Boiling point	> 3000 °C (decomp)
Solubility in water	reacts, forms Sr(OH)2
Solubility	miscible with caustic potash; slightly soluble in alcohol; insoluble in acetone and ether
Refractive index (nD)	1.810
Structure
Crystal structure	Halite (cubic), cF8
Space group	Fm3m, No. 225
Coordination; geometry	Octahedral (Sr2+); octahedral (O2–)
Thermochemistry
Std enthalpy of; formation ΔfHo298	-592.0 kJ·mol-1
Standard molar; entropy So298	57.2 J·mol-1·K-1
Specific heat capacity, C	44.3 J·mol-1·K-1
Hazards
EU Index	Not listed
Flash point	Non-flammable
Related compounds
Other anions	Strontium sulfide
Other cations	Beryllium oxide; Magnesium oxide; Calcium oxide; Barium oxide
Related compounds	Strontium hydroxide
	(what is this?) (verify); Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
	Infobox references

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.

[edit] Uses

About 8% by weight of television picture tube glass is strontium oxide, which has been the major use of strontium since 1970.^[3]Color televisions and other devices containing color cathode ray tubes sold in the United States are required by law to use strontium in the faceplate to block X-ray emission. (Lead oxide can be used in the neck and funnel, but causes discoloration when used in the faceplate.)^[4]

[edit] Reactions

Elemental strontium is formed when strontium oxide is heated with aluminium in a vacuum.^[1]

[edit] References

^ ^a ^b Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: CRC Press. pp. 4–87. ISBN 0849305942.
^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0070494398
^ Ober, Joyce A.; Polyak, Désirée E.. "Mineral Yearbook 2007:Strontium". United States Geological Survey. http://minerals.usgs.gov/minerals/pubs/commodity/strontium/myb1-2007-stron.pdf. Retrieved 2009-09-14.
^ Méar, F; Yot, P; Cambon, M; Ribes, M (2006). "The characterization of waste cathode-ray tube glass.". Waste management (New York, N.Y.) 26 (12): 1468–76. doi:10.1016/j.wasman.2005.11.017. ISSN 0956-053X. PMID 16427267.

[edit] External links

Hansen, Tony, "SrO (Strontium Oxide, Strontia)", ceramic-materials.com

This inorganic compound-related article is a stub. You can help Wikipedia by expanding it.

[hand-0] Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: CRC Press. pp. 4–87. ISBN 0849305942.

[1] Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0070494398

[2] Ober, Joyce A.; Polyak, Désirée E.. "Mineral Yearbook 2007:Strontium". United States Geological Survey. http://minerals.usgs.gov/minerals/pubs/commodity/strontium/myb1-2007-stron.pdf. Retrieved 2009-09-14.

[3] Méar, F; Yot, P; Cambon, M; Ribes, M (2006). "The characterization of waste cathode-ray tube glass.". Waste management (New York, N.Y.) 26 (12): 1468–76. doi:10.1016/j.wasman.2005.11.017. ISSN 0956-053X. PMID 16427267.

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Contents

[edit] Uses

[edit] Reactions

[edit] References

[edit] External links