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Copper Compounds

 



COPPER POWDER (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 POWDER

Material

Purity

Copper Shot 1-10mm

3N, 4N, 5N, 6N

Copper Shot 4-6mm

3N, 4N, 5N, 6N

Copper Pellets .125"D X .125"L

3N, 4N, 5N

Copper Pellets .125"D X .250"L

3N, 4N, 5N

Copper Pellets .250"D X .250"L

3N, 4N, 5N

Copper Ingot

3N, 4N, 5N

Copper Powder-100 Mesh

3N, 4N

Copper Powder-200 Mesh

3N, 4N

Copper Powder-325 Mesh

3N, 4N

Powder, shot, pellets, and ingots are packaged to order and sold by the gram or kilogram.  

 

 

Material Safety Data Sheet - MSDS

Copper MSDS

Technical Data Sheets

 Understanding Mesh Sizes

 

 

 

Last updated:

Copyright 2002 | ESPICorp Inc.