C

Cobalt(II) oxide

IUPAC: oxocobalt

CoO Inorganic Compounds CAS 1307-96-6
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Quick Reference
Formula / NotationCoO
CAS Number1307-96-6
Molecular Weight74.933
Melting PointAbout 1935 °C
Density5.7-6.7 depending on preparation
SolubilityIn water, 4.88 mg/L at 20 °C, 3.27 mg/L at 37 °C (column elution method)
AppearancePellets or Large Crystals; Dry Powder
Also Known Asoxocobalt; 1307-96-6; Cobalt monoxide; COBALTOUS OXIDE; CCRIS 4229; HSDB 239; EINECS 215-154-6; UNII-V9X9644V7Q; CI 77322; C.I. 77322
CategoryInorganic Compounds

What is Cobalt(II) oxide?

Cobalt (II) Oxide can cause cancer according to The World Health Organization's International Agency for Research on Cancer (IARC).

Formula & Notation

CoO

IUPAC Name: oxocobalt

Other Names / Synonyms: oxocobalt; 1307-96-6; Cobalt monoxide; COBALTOUS OXIDE; CCRIS 4229; HSDB 239; EINECS 215-154-6; UNII-V9X9644V7Q; CI 77322; C.I. 77322

Properties & Characteristics

Appearance: Pellets or Large Crystals; Dry Powder. Molecular formula: CoO. Molecular weight: 74.933 g/mol. Melting point: About 1935 °C. Density: 5.7-6.7 depending on preparation. Solubility: In water, 4.88 mg/L at 20 °C, 3.27 mg/L at 37 °C (column elution method).

Physical Data

PropertyValue
Melting PointAbout 1935 °C
Density5.7-6.7 depending on preparation
Molecular Weight74.933
SolubilityIn water, 4.88 mg/L at 20 °C, 3.27 mg/L at 37 °C (column elution method)
AppearancePellets or Large Crystals; Dry Powder

Uses & Applications

Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.

Safety Information

May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Cobalt(II) oxide
Formula CoO
CAS Number 1307-96-6
Molecular Weight 74.933
Synonyms oxocobalt; 1307-96-6; Cobalt monoxide; COBALTOUS OXIDE; CCRIS 4229; HSDB 239; EINECS 215-154-6; UNII-V9X9644V7Q; CI 77322; C.I. 77322

Frequently Asked Questions

Cobalt (II) Oxide can cause cancer according to The World Health Organization's International Agency for Research on Cancer (IARC).

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.