Cobalt Sulfate
Multiple Hydration States: Available in anhydrous, monohydrate, and heptahydrate forms, providing versatility for diverse industrial requirements.
Thermal Responsiveness: Undergoes controlled dehydration at defined transition points (41°C and 74°C), enabling precise phase adjustments during processing.
Good Water Solubility: Exhibits favorable solubility in aqueous systems for both anhydrous and heptahydrate forms, facilitating integration into water-based formulations.
Distinct Crystal Structures: Displays characteristic orthogonal and monoclinic crystalline configurations, offering materials with differentiated physical properties.
Cobalt(II) sulfate anhydrous exists as purple orthogonal crystals with a density of 3.71 g/cm³ and a melting point exceeding 700°C. The monohydrate form presents as crimson crystals with a density of 3.08 g/cm³, demonstrating gradual solubility in boiling water. The heptahydrate variant forms crimson monoclinic prismatic crystals with a density of 2.03 g/cm³, undergoing dehydration to the hexahydrate at 41°C and further conversion to the monohydrate at 74°C. Both the anhydrous and heptahydrate forms exhibit water solubility.
Parameters
Melting point | decomposes at 1140℃ [JAN85] |
density | d425 3.71 |
vapor pressure | 0Pa at 20℃ |
refractive index | 1.639 |
solubility | H2O: soluble |
form | red orthorhombic crystals |
color | red orthorhombic crystals, crystalline |
Odor | Odorless |
Water Solubility | dissolves slowly in boiling H2O [MER06]; g/100g solution H2O: 19.7 ± 0.1 (0°C), 27.2 ± 0.1 (25°C), 27.8 (100°C); solid phase, CoSO4 · 7H2O (0°C, 25°C), CoSO4 ·H2O (100°C) [KRU93] |
Merck | 13,2473 |
InChI | InChI=1S/Co.H2O4S.H2O/c;1-5(2,3)4;/h;(H2,1,2,3,4);1H2/q+2;;/p-2 |
InChIKey | BGORGFZEVHFAQU-UHFFFAOYSA-L |
SMILES | S([O-])([O-])(=O)=O.O.[Co+2] |
LogP | -1.031 (est) |
CAS DataBase Reference | 10124-43-3(CAS DataBase Reference) |
NIST Chemistry Reference | Cobalt sulfate(10124-43-3) |
EPA Substance Registry System | Cobalt(II) sulfate (10124-43-3) |
Safety Information
Hazard Codes | T,N |
Risk Statements | 49-42/43-51/53-50/53-22-68-60 |
Safety Statements | 53-23-36/37-45-61-60-22 |
RIDADR | UN 3082 9/PG 3 |
WGK Germany | 2 |
Hazardous Substances Data | 10124-43-3(Hazardous Substances Data) |
Cobalt sulfate (CAS 10124-43-3) finds broad industrial application as a fundamental precursor in the synthesis of cobalt compounds. It contributes to performance enhancement in lithium-ion battery cathode manufacturing, serves as a trace element fertilizer in agriculture, and is employed in metal surface electroplating. Additionally, it functions as an active component in catalytic systems to improve reaction efficiency.
