Synonyms
Copper oxide (CuO); Copper Brown; AKOS015950660; Copper(II) oxide, 97%; Osmose K-33-C Wood Preservative; Copper(II) oxide (99.995%-Cu) PURATREM; EPA Pesticide Chemical Code 042401; Copper monooxide; Osmose P-50 Wood Preservative; Copporal;
IUPAC Name
Copper oxygen(2-)
Molecular Weight
79.55
Molecular Formula
CuO
InChI
InChI=1S/Cu.O;
InChI Key
QPLDLSVMHZLSFG-UHFFFAOYSA-N;
Melting Point
1326 DEG C;1879°F (Decomposes);
Density
6.315 @ 14 deg C/4 deg C;6.4 (CuO);
Solubility
Practically insol in water, alc; sol in dilute acids, alkali cyanides, ammonium carbonate soln; slowly sol in ammonia;SOL IN AMMONIUM CHLORIDE, POTASSIUM CYANIDE;Soluble in acids; difficultly soluble in water;Virtually insoluble in water or alcohols; copper(II) oxide dissolves slowly in ammonia solution but quickly in ammonium carbonate solution; it is dissolved by alkali metal cyanides and by strong acid solutions; hot formic acid and boiling acetic acid solutions readily dissolve the oxide.;Insoluble;
Color Form
Black to brownish-black amorphous or crystalline powder or granules;Monoclinic crystals or black powder;Finely divided black particulate dispersed in air.;
Complexity
2
Covalently-Bonded Unit Count
1
Decomposition
Decomposes at 1026 deg C.;
EC Number
215-269-1
Exact Mass
78.9245
H-Bond Acceptor
1
Heavy Atom Count
2
MDL Number
MFCD00010974
Monoisotopic Mass
78.9245
NSC Number
83537
Other Experimental
Heat of fusion: 2820 cal/g mole, 35.4 cal/g;Dielectric constant: 18.1 @ 15 deg C;Copper(II) oxide is decomposed to copper(I) oxide and oxygen at 1030 deg C and atmospheric pressure; the reduction can proceed at lower temperature in a vacuum; hydrogen and carbon monoxide reduce copper(II) oxide to the metal at 250 deg C and to copper(I) oxide at about 150 deg C; ammonia gas reduces copper(II) oxide to copper metal and copper(I) oxide at 425-700 deg C.;
Physical State
Black to brown powder
RTECS Number
GL7900000
Topological Polar Surface Area
17.1A^2
Vapor Pressure
0 mmHg (approx);
