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Names | |
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IUPAC name
Cobalt(II) iodide
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Other names
cobaltous iodide, cobalt diiodide
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Identifiers | |
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3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.035.697 |
EC Number |
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PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
CoI2 | |
Molar mass | 312.7421 g/mol (anhydrous) 420.83 g/mol (hexahydrate) |
Appearance | α-form: black hexagonal crystal β-form: yellow powder |
Density | α-form: 5.584 g/cm3 β-form: 5.45 g/cm3 hexahydrate: 2.79 g/cm3 |
Melting point | α-form: 515-520 °C under vacuum β-form: converts to α-form at 400 °C |
Boiling point | 570 °C (1,058 °F; 843 K) |
67.0 g/100 mL[1] | |
+10,760·10−6 cm3/mol | |
Hazards | |
GHS labelling: | |
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Warning | |
H302, H312, H315, H319, H332, H335 | |
NFPA 704 (fire diamond) | |
Related compounds | |
Other anions
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Cobalt(II) fluoride Cobalt(II) chloride Cobalt(II) bromide |
Other cations
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Nickel(II) iodide Copper(I) 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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Cobalt(II) iodide or cobaltous iodide are the inorganic compounds with the formula CoI2 and the hexahydrate CoI2(H2O)6. These salts are the principal iodides of cobalt.[2]
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