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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.
  • InChIKeyMEYVLGVRTYSQHI-UHFFFAOYSA-L
  • CAS DataBase Reference10026-24-1(CAS DataBase Reference)
  • EPA Substance Registry SystemCobalt(2+) sulfate heptahydrate (10026-24-1)
Safety Information
MSDS
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
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