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HomeProduct name listCobalt carbonate

Cobalt carbonate

  • CAS NO.:513-79-1
  • Empirical Formula: CCoO3
  • Molecular Weight: 118.94
  • MDL number: MFCD00010940
  • EINECS: 208-169-4
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-24 21:11:45
Cobalt carbonate Structural

What is Cobalt carbonate?

Description

Cobalt(II) carbonate, CoCO3, is a reddish paramagnetic solid and an intermediate in the hydrometallurgical purification of cobalt from its ores. It is an inorganic pigment, and a precursor to catalysts. Cobalt(II) carbonate also occurs as the rare red/pink mineral spherocobaltite. It is prepared by combining cobaltous sulfate and sodium bicarbonate solutions.

Chemical properties

Cobalt carbonate is Violet Powder. Cobalt (II) carbonate hexahydrate on heating becomes anhydrous by 140 °C while the anhydrous cobalt (II) carbonate decomposes at 427 °C before melting into cobalt (II) oxide.

The Uses of Cobalt carbonate

Cobalt(II) carbonate is precursor to cobalt carbonyl, cobalt salts and blue pottery glazes such as delftware. It is used as an essential element in dietary supplements and also used in the manufacture of paints and pigments.

Preparation

Cobalt(II) carbonate is prepared by heating cobaltous sulfate, cobaltous chloride or any Co2+ salt with sodium bicarbonate in solution:
CoSO4 + NaHCO3 → CoCO3 + NaHSO4

What are the applications of Application

Cobalt(II) Carbonate is an inorganic compound that is an intermediate in the hydrometallurgical purification of cobalt from its ore. It is also a paramagnetic solid, an inorganic pigment, and a precursor to catalysts.

What are the applications of Application

Cobalt carbonate is a highly effective colourant used in ceramics as a blue colourant in glazes. It is also a common ingredient in ceramic decals. Cobalt mixed with other colourants such as magnesium and added to glazes produces a more violet/reddish blue colour in oxidation/reduction firings. With this colourant, you can produce blue slips if mixed with white clay bodies. By using this, you can obtain various shades of blue in different intensities. In addition, if mixed with iron and manganese in the right proportions, you can obtain an intense black colour. In general, cobalt is a relatively stable colourant in all kiln atmospheres.

Flammability and Explosibility

Not classified

Properties of Cobalt carbonate

Melting point: decomposes [KIR79]
Density  4.13 g/mL at 25 °C(lit.)
vapor pressure  0Pa at 20℃
storage temp.  under inert gas (nitrogen or Argon) at 2-8°C
solubility  insoluble in ethanol
form  Powder
color  Pink
Specific Gravity 4.13
Water Solubility  Insoluble in water, alcohol and methyl acetate.
Merck  14,2436
Solubility Product Constant (Ksp) pKsp: 12.84
Exposure limits ACGIH: TWA 0.02 mg/m3
Stability: Air sensitive. Incompatible with strong oxidizing agents.
CAS DataBase Reference 513-79-1(CAS DataBase Reference)
EPA Substance Registry System Cobalt(II) carbonate (513-79-1)

Safety information for Cobalt carbonate

Signal word Danger
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
ghs
Health Hazard
GHS08
ghs
Environment
GHS09
GHS Hazard Statements H302:Acute toxicity,oral
H317:Sensitisation, Skin
H334:Sensitisation, respiratory
H341:Germ cell mutagenicity
H350:Carcinogenicity
H360:Reproductive toxicity
H400:Hazardous to the aquatic environment, acute hazard
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P201:Obtain special instructions before use.
P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P284:Wear respiratory protection.
P405:Store locked up.

Computed Descriptors for Cobalt carbonate

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