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Cobalt(II) chloride
chemical compound / From Wikipedia, the free encyclopedia
Cobalt(II) chloride, also known as cobaltous chloride and cobalt dichloride, is a chemical compound. It contains cobalt in its +2 oxidation state. Its chemical formula is CoCl2. It contains cobalt and chloride ions.
Quick Facts Names, Identifiers ...
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Names | |||
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IUPAC name
Cobalt(II) chloride | |||
Other names | |||
Identifiers | |||
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3D model (JSmol) |
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ChEBI | |||
ChemSpider |
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ECHA InfoCard | 100.028.718 | ||
EC Number |
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PubChem CID |
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RTECS number |
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UNII |
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UN number | 3288 | ||
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SMILES
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Properties | |||
CoCl2 | |||
Molar mass | 129.839 g/mol (anhydrous) 165.87 g/mol (dihydrate) 237.93 g/mol (hexahydrate) | ||
Appearance | blue crystals (anhydrous) violet-blue (dihydrate) rose red crystals (hexahydrate) | ||
Density | 3.356 g/cm3 (anhydrous) 2.477 g/cm3 (dihydrate) 1.924 g/cm3 (hexahydrate) | ||
Melting point | 726 °C (1,339 °F; 999 K) ±2 (anhydrous) 140 °C (monohydrate) 100 °C (dihydrate) 86 °C (hexahydrate) | ||
Boiling point | 1,049 °C (1,920 °F; 1,322 K) | ||
43.6 g/100 mL (0 °C) 45 g/100 mL (7 °C) 52.9 g/100 mL (20 °C) 105 g/100 mL (96 °C) | |||
Solubility | 38.5 g/100 mL (methanol) 8.6 g/100 mL (acetone) soluble in ethanol, pyridine, glycerol | ||
+12,660·10−6 cm3/mol | |||
Structure | |||
CdCl2 structure | |||
hexagonal (anhydrous) monoclinic (dihydrate) Octahedral (hexahydrate) | |||
Hazards | |||
NFPA 704 |
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Flash point | Non-flammable | ||
Related compounds | |||
Other anions | Cobalt(II) fluoride Cobalt(II) bromide Cobalt(II) iodide | ||
Other cations | Rhodium(III) chloride Iridium(III) chloride | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |||
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