Strontium iodide
| Names | |
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| IUPAC name
Strontium iodide | |
| Identifiers | |
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3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.030.871 |
| EC Number |
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PubChem CID |
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| RTECS number |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| SrI2 (anhydrous) SrI2·6H2O (hexahydrate) | |
| Molar mass | 341.43 g·mol−1 (anhydrous) |
| Appearance | Colorless to white crystalline plates |
| Density | 4.55 g/cm3 (anhydrous) 4.40 g/cm3 (hexahydrate) |
| Melting point | 507 to 645 °C (945 to 1,193 °F; 780 to 918 K) |
| Boiling point | 1,773 °C (3,223 °F; 2,046 K) (decomposes) |
| 177.0 g/100 mL (20 °C) | |
| Solubility in ethanol | 3.1 g/100 ml (4 °C) |
| −112.0·10−6 cm3/mol | |
| Structure | |
| Orthorhombic, oP24 | |
| Pbca, No. 61 | |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
Corrosive |
| GHS labelling: | |
| Danger | |
| H314 | |
| P280, P305+P351+P338, P310 | |
| NFPA 704 (fire diamond) | |
| Related compounds | |
Other anions |
strontium fluoride strontium chloride strontium bromide |
Other cations |
beryllium iodide magnesium iodide calcium iodide barium iodide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Strontium iodide is an inorganic compound with the chemical formula SrI2. It is a salt of strontium and iodine. It forms a hexahydrate SrI2·6H2O. It is an ionic, water-soluble, and deliquescent compound that can be used in medicine as a substitute for potassium iodide. It is also used as a scintillation gamma radiation detector, typically doped with europium, due to its optical clarity, relatively high density, high effective atomic number (Z=48), and high scintillation light yield. In recent years, europium-doped strontium iodide (SrI2:Eu2+) has emerged as a promising scintillation material for gamma-ray spectroscopy with extremely high light yield and proportional response, exceeding that of the widely used high performance commercial scintillator LaBr3:Ce3+. Large diameter SrI2 crystals can be grown reliably using vertical Bridgman technique and are being commercialized by several companies.