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Cobalt nitrate is the inorganic cobalt(II) salt of nitric acid, often with various amounts of water. It is more commonly found as a hexahydrate, Co(NO3)2·6H2O, which is a red-brown deliquescent salt that is soluble in water and other polar solvents
| Other names[hide]Cobaltous nitrateNitric acid, cobalt(2+) salt | |
| CAS number | 10141-05-6 Y, 10026-22-9 (hexahydrate) |
| PubChem | 25000 |
| ChemSpider | 23369 Y |
| UNII | 65W79BFD5V Y |
| EC number | 233-402-1 |
| RTECS number | GG1109000 |
| Jmol-3D images | Image 1 |
| SMILES[show][Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O | |
| InChI[show]InChI=1S/Co.2NO3/c;2*2-1(3)4/q+2;2*-1 YKey: UFMZWBIQTDUYBN-UHFFFAOYSA-N Y InChI=1/Co.2NO3/c;2*2-1(3)4/q+2;2*-1Key: UFMZWBIQTDUYBN-UHFFFAOYAS | |
| Molecular formula | Co(NO3)2 |
| Molar mass | 182.943 g/mol (anhydrous)291.03 g/mol (hexahydrate) |
| Appearance | pale red powder (anhydrous)red crystalline (hexahydrate) |
| Density | 2.49 g/cm3 (anhydrous)1.87 g/cm3 (hexahydrate) |
| Melting point | 100 °C, decomp (anhydrous)55 °C (hexahydrate) |
| Boiling point | 100–105 °C, decomp (hexahydrate) |
| Solubility in water | 134 g/100 ml, 0 °C (hexahydrate)soluble (anhydrous) |
| Solubility | soluble in alcohol, acetone (hexahydrate) |
| Coordinationgeometry | monoclinic (hexahydrate) |
| MSDS | Cobalt (II) Nitrate MSDS |
| EU Index | 027-009-00-2 |
| EU classification | Carc. Cat. 2Muta. Cat. 3Repr. Cat. 2Toxic (T)Dangerous for the environment (N) |
| R-phrases | R49, R60, R42/43, R68, R50/53 |
| NFPA 704 | 020 |
| Other anions | Cobalt(II) sulfateCobalt(II) chlorideCobalt oxalate |
| Other cations | Iron(III) nitrateNickel(II) nitrate |