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| Ccobaltous oxide(cobalt monoxide, cobalt trivalent oxide) |
Molecular formula:CoO or Co2O3
Molecular weight:74.93 or 165.88
Property:Cobalt monoxide: celandine green powder,density:6.45g/cm3,melting
point1935?,cobalt
trivalent oxide: grey black powder,density:5.18g/cm3,it
is decomposed into cobalt monoxide when heated to 895?,The
proportion between them depends on the temperature and burning time.
Insoluble in water, alcohol,ammonia water, soluble in acid and hydrate
solution.
Specification:GB6518-86(T type)
| Index name |
Grade
One |
Grade
Two |
Special
grade |
| Content (Co) % ≥ |
74 |
70 |
72 |
| Iron (Fe)% ≤ |
0.1 |
0.1 |
0.1 |
| Manganese (Mn)% ≤ |
0.1 |
0.1 |
0.1 |
| Copper(Cu)% ≤ |
0.05 |
0.05 |
0.05 |
| Zinc (Zn)% ≤ |
0.05 |
0.1 |
0.1 |
| Lead (Pb)% ≤ |
0.006 |
0.006 |
0.006 |
| Arsenic (As)% ≤ |
0.005 |
0.005 |
0.005 |
| Cadmium (Cd)% ≤ |
0.006 |
0.006 |
0.006 |
| Nickle (Ni)% ≤ |
0.05 |
0.1 |
0.1 |
| Fineness |
-350 mesh |
-350 mesh |
-350 mesh |
Note:This standard is applicable to ceramic flaze pigment,the mixture
of Cobalt monoxide and cobalt trivalent oxide.
Application area:Used in preparing cobalt salts, pigment and ceramic
glaze,also used as oxidant and catalyzer. And it is the adhesive
agent for glass, ceramic, magnetic material and colorant for some
pigments.
Packing:25kg pail |
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