Copper(I) oxide

Copper(I) oxide
Copper(I) oxide
Copper(I) oxide unit cell

Names
IUPAC name
Copper(I) oxide
Other names
Cuprous oxide
Dicopper oxide
Cuprite
Red copper oxide
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.013.883 Edit this at Wikidata
EC Number
  • 215-270-7
KEGG
RTECS number
  • GL8050000
UNII
  • InChI=1S/2Cu.O/q2*+1;-2 checkY
    Key: KRFJLUBVMFXRPN-UHFFFAOYSA-N checkY
  • InChI=1/2Cu.O/rCu2O/c1-3-2
    Key: BERDEBHAJNAUOM-YQWGQOGZAF
  • InChI=1/2Cu.O/q2*+1;-2
    Key: KRFJLUBVMFXRPN-UHFFFAOYAM
  • [Cu]O[Cu]
  • [Cu+].[Cu+].[O-2]
Properties
Cu2O
Molar mass 143.09 g/mol
Appearance brownish-red solid
Density 6.0 g/cm3
Melting point 1,232 °C (2,250 °F; 1,505 K)
Boiling point 1,800 °C (3,270 °F; 2,070 K)
Insoluble
Solubility in acid Soluble
Band gap 2.137 eV
−20×10−6 cm3/mol
Structure
cubic
Pn3m, #224
a = 4.2696
Thermochemistry
93 J·mol−1·K−1
−170 kJ·mol−1
Hazards
GHS labelling:
GHS05: CorrosiveGHS07: Exclamation markGHS09: Environmental hazard
Danger
H302, H318, H332, H410
P273, P305+P351+P338
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
2
0
1
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 1 mg/m3 (as Cu)[1]
REL (Recommended)
 TWA 1 mg/m3 (as Cu)[1]
IDLH (Immediate danger)
 TWA 100 mg/m3 (as Cu)[1]
Safety data sheet (SDS) SIRI.org
Related compounds
Other anions
 Copper(I) sulfide
Copper(II) sulfide
Copper(I) selenide
Other cations
 Copper(II) oxide
Silver(I) oxide
Nickel(II) oxide
Zinc oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Copper(I) oxide or cuprous oxide is the inorganic compound with the formula Cu2O. It is one of the principal oxides of copper, the other being copper(II) oxide or cupric oxide (CuO).The compound can appear either yellow or red, depending on the size of the particles.[2] Cuprous oxide is found as the mineral cuprite. It is a component of some antifouling paints, but also has other applications including some that exploit its property as a semiconductor.

  1. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ N. N. Greenwood, A. Earnshaw, Chemistry of the Elements, 2nd ed., Butterworth-Heinemann, Oxford, UK, 1997.