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Cobalt Oxides

Cobalt(II) Oxide (CoO) (also known as cobaltous oxide and cobalt monoxide) appears as olive-green to red crystals or grayish or black powder that is insoluble in water but soluble in acids and alkalis. It is a toxic solid.

Cobalt(II,III) Oxide (Co₃O₄) (also known as tricobalt tetraoxide) is a fine powder that is an antiferromagnetic solid. It is insoluble in water but soluble in acids and alkalis.
Cobalt Oxide Carcinogenicity: Cobalt and its compounds have been shown to cause cancer in laboratory animals.
Typical Applications

Cobalt(II) Oxide (CoO) is used extensively in the ceramics industry as an additive to create blue colored glazes and enamels as well as to produce cobalt blue glass. It is used in the chemical industry to produce cobalt(II) salts. It also has applications in the manufacture of magnetic and electronic component materials.

Cobalt(III) Oxide (Co₂O₃) is used in pigments, ceramic glazes, and semiconductors.

Cobalt(II,III) Oxide (Co₃O₄) has applications in enamels, semiconductors, and grinding wheels. It can be used in catalysis (as catalyst and catalyst carrier), superconductors and lithium-ion batteries (electrode active material), and as a pigment in glass, ceramics, and porcelain. Other uses include temperature and gas sensors, electronic ceramics, magnetic materials, electrochromic devices, enamels, and solar energy absorbers.

Packaging Options

Bags, drums, and bulk bags

Classification

Cobalt Oxide Powder TSCA (SARA Title III) Status: Unknown
For further information, please call the EPA Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902
Cobalt(II) Oxide (CoO) CAS Number: 1307-96-6
Cobalt(III) Oxide (Co₂O₃) CAS Number: 1308-04-9
Cobalt(II,III) Oxide (Co₃O₄) CAS Number: 1308-06-1

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Specifications Available

  • Cobalt Oxides - Cobalt(II) Oxide (CoO)
  • Cobalt Oxides - Cobalt(II,III) Oxide (Co₃O₄)

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Select Cobalt(II,III) Oxide (Co₃O₄)

  • -325 Mesh
  • Nanopowder, <50 nm

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