C

Copper(I) oxide

IUPAC: copper;oxocopper

Cu2O Inorganic Compounds CAS 1317-39-1
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Quick Reference
Formula / NotationCu2O
CAS Number1317-39-1
Molecular Weight143.09
Melting Point1235 °C
Boiling PointDecomp at 1800 °C
Density6.0
SolubilityCrimson, scarlet, vermilion, deep or brownish-red, secondary mineral; adamantine or dull luster; brownish red streak; sol in nitric and concentrated hydrochloric acids; specific gravity: 5.85-6.15;...
AppearanceLiquid; Water or Solvent Wet Solid; Dry Powder; Other Solid
Also Known Ascopper;oxocopper; (cupriooxy)copper; RefChem:1082154; 1317-39-1; Brown copper oxide; Caocobre; Caswell No. 266; CI 77402; Copox; copper (I) oxide
CategoryInorganic Compounds

What is Copper(I) oxide?

Copper(I) oxide (Cu2O) is an inorganic compound that appears as Liquid; Water or Solvent Wet Solid; Dry Powder; Other Solid. It has a molecular weight of 143.09 g/mol. Its IUPAC name is copper;oxocopper. Boiling point: Decomp at 1800 °C. Melting point: 1235 °C.

Formula & Notation

Cu2O

IUPAC Name: copper;oxocopper

Other Names / Synonyms: copper;oxocopper; (cupriooxy)copper; RefChem:1082154; 1317-39-1; Brown copper oxide; Caocobre; Caswell No. 266; CI 77402; Copox; copper (I) oxide

Properties & Characteristics

Appearance: Liquid; Water or Solvent Wet Solid; Dry Powder; Other Solid. Molecular formula: Cu2O. Molecular weight: 143.09 g/mol. Boiling point: Decomp at 1800 °C. Melting point: 1235 °C. Density: 6.0. Solubility: Crimson, scarlet, vermilion, deep or brownish-red, secondary mineral; adamantine or dull luster; brownish red streak; sol in nitric and concentrated hydrochloric acids; specific gravity: 5.85-6.15;.... Vapor pressure: Negligible.

Physical Data

PropertyValue
Melting Point1235 °C
Boiling PointDecomp at 1800 °C
Density6.0
Molecular Weight143.09
SolubilityCrimson, scarlet, vermilion, deep or brownish-red, secondary mineral; adamantine or dull luster; brownish red streak; sol in nitric and concentrated hydrochloric acids; specific gravity: 5.85-6.15;...
AppearanceLiquid; Water or Solvent Wet Solid; Dry Powder; Other Solid

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 Copper(I) oxide
Formula Cu2O
CAS Number 1317-39-1
Molecular Weight 143.09
Category Inorganic Compounds
Index All "C" terms
Synonyms copper;oxocopper; (cupriooxy)copper; RefChem:1082154; 1317-39-1; Brown copper oxide; Caocobre; Caswell No. 266; CI 77402; Copox; copper (I) oxide

Frequently Asked Questions

Copper(I) oxide (Cu2O) is an inorganic compound that appears as Liquid; Water or Solvent Wet Solid; Dry Powder; Other Solid. It has a molecular weight of 143.09 g/mol. Its IUPAC name is copper;oxocopper. Boiling point: Decomp at 1800 °C. Melting point: 1235 °C.

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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.

AllChemicals.info — The Online Chemical Glossary | https://allchemicals.info/chemical/copper-i-oxide

For educational purposes only. Verify all information before use.