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Names | |
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IUPAC name
calcium iodide
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Identifiers | |
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3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.030.238 |
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 | |
CaI2 | |
Molar mass | 293.887 g/mol (anhydrous) 365.95 g/mol (tetrahydrate) |
Appearance | white solid |
Density | 3.956 g/cm3 (anhydrous)[1] |
Melting point | 779 °C (1,434 °F; 1,052 K) (anhydrous) [2] |
Boiling point | 1,100 °C (2,010 °F; 1,370 K)[2] |
64.6 g/100 mL (0 °C) 66 g/100 mL (20 °C) 81 g/100 mL (100 °C) | |
Solubility | soluble in acetone and alcohols |
-109.0·10−6 cm3/mol | |
Structure | |
Rhombohedral, hP3 | |
P-3m1, No. 164 | |
octahedral | |
Hazards | |
NFPA 704 (fire diamond) | |
Related compounds | |
Other anions
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calcium fluoride calcium chloride calcium bromide |
Other cations
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beryllium iodide magnesium iodide strontium iodide barium iodide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Calcium iodide (chemical formula CaI2) is the ionic compound of calcium and iodine. This colourless deliquescent solid is a salt that is highly soluble in water. Its properties are similar to those for related salts, such as calcium chloride. It is used in photography.[1] It is also used in cat food as a source of iodine.
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