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Cobalt sulfate heptahydrate

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Cobalt sulfate heptahydrate Basic information
Cobalt sulfate heptahydrate Chemical Properties
  • Melting point:98 °C
  • Boiling point:735°C
  • Density 2.03 g/mL at 25 °C(lit.)
  • storage temp. Store at +5°C to +30°C.
  • solubility H2O: soluble
  • form Solid
  • Specific Gravity1.948
  • color Red-brown
  • PH4 (100g/l, H2O, 20℃)
  • Water Solubility 362 g/L (20 ºC)
  • Merck 14,2448
  • Stability:Stable. Non-flammable. Hygroscopic. Dehydrates at around 41 C and 71 C.
  • CAS DataBase Reference10026-24-1(CAS DataBase Reference)
  • EPA Substance Registry SystemCobalt(2+) sulfate heptahydrate (10026-24-1)
Safety Information
Cobalt sulfate heptahydrate Usage And Synthesis
  • Chemical PropertiesCobalt sulphate appears as pink or red crystals. It is stable, non-flammable, and hygroscopic and undergoes dehydration at 41°C and 71°C.
  • Chemical PropertiesRed powder or rose pink crystalline solid. Odorless.
  • UsesUsual source of water-soluble cobalt since it is the most economical and it shows less tendency to deliquesc or dehydrate than the chloride or nitrate. Used in storage batteries; in Co-electroplating baths; as drier for lithographic inks, varnishes; in ceramics, enamels, glazes to prevent discoloring; in Co pigments for decorating porcelain.
  • DefinitionChEBI: A hydrate that is the heptahydrate form of cobalt(2+) sulfate.
  • General DescriptionPink to red monoclinic prismatic crystals or red granular solid. Odorless. Becomes anhydrous at 788°F.
  • Air & Water ReactionsWater soluble. The resulting solution is acidic.
  • Reactivity ProfileDoes not react strongly as either oxidizing agents or reducing agents but such behavior is not impossible. The aqueous solutions are acidic. May catalyze organic reactions.
  • Fire HazardLiterature sources indicate that Cobalt sulfate heptahydrate is nonflammable.
  • Potential ExposureMany be used to catalyze organic reactions.
  • ShippingUN3288 Toxic solids, inorganic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.
  • Purification MethodsCrystallise it three times from conductivity water (1.3mL/g) between 100o and 0o depending on which hydrate is required. The heptahydrate crystallises below 44o and is efflorescent with m 97o . Between 44o and 70o the monoclinic hexahydrate CoSO4.6H2O m 41.5o is formed, and above 70o the monohydrate CoSO4.H2O m 71o is obtained. The pale reddish or lavender-coloured anhydrous salt is obtained by heating the hydrate above 250o, boiling with conc H2SO4 or heating with (NH4)2SO4).
  • IncompatibilitiesAqueous solution reacts with bases, generating some heat. May react as either oxidizing agents or reducing agents
  • Waste DisposalUse a licensed professional waste disposal service to dispose of this material. All federal, state, and local environmental regulations must be observed.
Cobalt sulfate heptahydrate Preparation Products And Raw materials
Cobalt sulfate heptahydrate(10026-24-1)Related Product Information
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