Strontium iodide
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| Names | |
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IUPAC name
Strontium iodide
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| Identifiers | |
10476-86-5 (anhydrous) 
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| 3D model (Jmol) | Interactive image |
| ECHA InfoCard | 100.030.871 |
| EC Number | 233-972-1 |
| PubChem | 25304 |
| RTECS number | WK9275000 |
| UNII |
F6V5HOR0O5 
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| Properties | |
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SrI2 (anhydrous) SrI2·6H2O (hexahydrate) |
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| Molar mass | 341.43 g/mol (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 | |
| Main hazards | Corrosive |
| R-phrases | R14 R34 |
| S-phrases | S22 S26 S27 S36/37/39S45 |
| NFPA 704 | |
| Related compounds | |
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Other anions
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strontium fluoride strontium chloride strontium bromide |
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Other cations
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beryllium iodide magnesium iodide calcium iodide barium iodide |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 (what is ?) |
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| Infobox references | |
Strontium iodide (SrI2) is a salt of strontium and iodine. 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.
Strontium iodide can be prepared by reacting strontium carbonate with hydroiodic acid:
Strontium iodide yellows when exposed to air. At high temperatures (when in the presence of air) strontium iodide completely decomposes to form strontium oxide and free iodine.
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