|
COPPER
COMPOUNDS
(Cu)
MATERIAL
OVERVIEW
Characteristics:
Distinctive reddish color; ductile; excellent
conductor of electricity. Complexing
agent, coordination numbers 2 and 4. Dissolves readily
in nitric and hot concentrated H2SO4,
in HCl and dilute H2SO4
slowly
but only when exposed to the atmosphere. More
resistant to atmospheric corrosion than iron, forming
a green layer of hydrated basic carbonate.
Readily attacked by alkalies. A necessary trace
element in human diet; a factor in plant metabolism.
Essentially nontoxic in elemental form. Powder is
combustible.
Derivation:
With sulfide ores the steps may be (1) concentration
(of low grade ores) by flotation and leaching, (2)
roasting, (3) formation of copper “matte” (40-50%
Cu), (4) reduction of matte to “blister” copper
(96-98%), (5) electrolytic refining to 99.9+% copper.
Hazard:
Toxic and flammable in finely divided form. Tolerance
(fume) 0.2 mg/m3;
(dusts and
mists)
1 mg/m3.
GENERAL
PROPERTIES
|
Symbol:
|
Cu
|
|
Atomic
Number:
|
29
|
|
Atomic
Weight:
|
63.546
|
|
Density:
|
8.96
gm/cc
|
|
Melting
Point:
|
1083.4
oC
|
|
Boiling
Point:
|
2567
oC
|
|
Thermal
Conductivity:
|
4.01
W/cm/oK
@ 298.2 oK
|
|
Electrical
Resistivity:
|
1.678
microhm-cm @ 20 oC
|
|
Electronegativity:
|
1.9
Paulings
|
|
Specific
Heat:
|
0.092
Cal/g/oK
@ 25 oC
|
|
Heat
of Vaporization:
|
72.8
K-cal/gm atom at 2567 oC
|
|
Heat
of Fusion:
|
3.11
Cal/gm mole
|
TYPICAL
ANALYSES
Impurities
in ppm
|
Material
/ Purity:
|
4N
|
5N
|
6N
|
|
Ag
|
1
|
0.3
|
0.2
|
|
As
|
10
|
1
|
-
|
|
Bi
|
2
|
0.2
|
-
|
|
Ca
|
-
|
0.1
|
0.3
|
|
Fe
|
2
|
0.1
|
0.1
|
|
Mg
|
1
|
0.2
|
0.1
|
|
Ni
|
30
|
-
|
-
|
|
Pb
|
3
|
0.1
|
-
|
|
Sb
|
20
|
1
|
-
|
|
Si
|
5
|
0.2
|
0.2
|
|
Sn
|
5
|
0.2
|
-
|
COPPER
COMPOUNDS
|
Material
|
Purity
|
|
Copper
Antimonide Cu3Sb
1/4" Pieces by Down
|
2N5
|
|
Copper
Arsenide Cu3As
1/4" Pieces by Down
|
2N
|
|
Copper
Bromide CuBr -80 Mesh
|
2N
5N
|
|
Copper
Bromide CuBr2
-80 Mesh
|
2N
|
|
Copper
Chloride CuCl & CuCl2
-80 Mesh
|
2N
5N
|
|
Copper
Fluoride CuF2
-100 Mesh
|
2N5
|
|
Copper
Iodide CuI -80 & -60 Mesh
|
5N
|
|
Copper
Nitride Cu3N
-200 Mesh
|
2N5
|
|
Copper
Oxide Cu2O
-200 Mesh
|
3N
|
|
Copper
Oxide CuO -100 Mesh
|
5N
|
|
Copper
Oxide CuO -200 Mesh
|
3N
|
|
Copper
Selenide CuSe 1/4" Pieces by Down
|
2N5
|
|
Copper
Selenide Cu2Se
1/4" Pieces by Down
|
2N5
|
|
Copper
Silicide Cu5Si
1/4" Pieces by Down
|
2N5
|
|
Copper
Sulfide Cu2S
-200 Mesh
|
2N5,
5N
|
|
Copper
Sulfide CuS -100 & 200 Mesh
|
5N
|
|
Copper
Telluride CuTe -60 Mesh
|
2N5
|
|
Copper
Telluride Cu2Te
1/8" Pieces
|
2N5
|
|
Copper
Tungstate CuWO4-200
Mesh
|
3N
|
Compounds
are packaged to order and sold by the gram or
kilogram.
|
