Strontium aluminate
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Strontium aluminate is an aluminate compound with the chemical formula SrAl2O4 (sometimes written as SrO·Al2O3). It is a pale yellow, monoclinic crystalline powder that is odourless and non-flammable. When activated with a suitable dopant (e.g. europium, written as Eu:SrAl2O4), it acts as a photoluminescent phosphor with long persistence of phosphorescence.
Quick Facts Names, Identifiers ...
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IUPAC name
Strontium aluminate | |
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3D model (JSmol) |
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ECHA InfoCard | 100.031.310 |
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CompTox Dashboard (EPA) |
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Properties | |
SrAl2O4 | |
Molar mass | 205.58 g/mol |
Appearance | Pale yellow powder |
Density | 3.559 g/cm3 |
Structure | |
Monoclinic | |
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 aluminates exist in a variety of other compositions including SrAl4O7 (monoclinic), Sr3Al2O6 (cubic), SrAl12O19 (hexagonal), and Sr4Al14O25 (orthorhombic). The different compositions cause different colours of light to be emitted.