Strontium aluminate

Strontium aluminate
Names
	IUPAC name Strontium aluminate
Identifiers
CAS Number	1:2:4: 12004-37-4 ; 1:12:19: 12254-24-9; 4:14:25: 76125-60-5;
3D model (JSmol)	1:2:4: Interactive image; 2:2:5: Interactive image; 1:4:7: Interactive image; 3:2:6: Interactive image; 1:12:19: Interactive image; 4:14:25: Interactive image;
ChemSpider	1:2:4: 8305977;
ECHA InfoCard	100.031.310
EC Number	1:2:4: 234-455-3; 1:12:19: 235-498-0; 4:14:25: 278-377-8;
PubChem CID	1:2:4: 10130461; 2:2:5: 165931; 1:12:19: 44146232; 4:14:25: 90475941;
CompTox Dashboard (EPA)	1:2:4: DTXSID70892151 ;
	InChI 1:2:4: InChI=1S/2Al.4O.Sr/q2+3;4-2;+2 Key: NKGZELKYJQYVMY-UHFFFAOYSA-N; 2:2:5: InChI=1S/2Al.5O.2Sr/q2+3;5-2;2+2 Key: FNWBQFMGIFLWII-UHFFFAOYSA-N; 1:12:19: InChI=1S/12Al.19O.Sr/q12+3;19-2;+2 Key: PLTZSNZQODUULH-UHFFFAOYSA-N; 4:14:25: InChI=1S/14Al.25O.4Sr/q14+3;25-2;4+2 Key: DXUWOFILOWSWBV-UHFFFAOYSA-N;
	SMILES 1:2:4: [O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Sr+2]; 2:2:5: [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Sr+2].[Sr+2]; 1:4:7: [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Al+3].[Al+3].[Sr+2]; 3:2:6: [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Sr+2].[Sr+2].[Sr+2]; 1:12:19: [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Sr+2]; 4:14:25: [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Sr+2].[Sr+2].[Sr+2].[Sr+2];
Properties
Chemical formula	SrAl2O4
Molar mass	205.58 g/mol
Appearance	Pale yellow powder
Density	3.559 g/cm3
Structure
Crystal structure	Monoclinic
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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.

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.