Properties: 4.42-4.45. Indissoluble in water & alcohol, slightly soluble in ammonia, soluble in diluted acid and sodium hydroxide.
Characters: amorphous white powder, inodorous, tasteless.
Molecular Formula: ZnCO3
Molecular Weight: 342.23
CAS: 5970-47-8
|
ITEMS
|
INDEX
|
||
|
High-Class
|
First-Class
|
Qualified
|
|
|
Zn % ≥
|
57.5
|
57.0
|
56.5
|
|
Loss on dry
|
25.0-28.0
|
25.0-30.0
|
25.0-32.0
|
|
Pb content % ≤
|
0.04
|
0.05
|
0.05
|
|
Moisture ≤
|
2.5
|
3.5
|
5.0
|
|
So4 % ≤
|
0.60
|
0.80
|
-
|
|
Fineness through 75 um Screen ≥
|
95.0
|
94.0
|
93.0
|
|
Cd content % ≤
|
0.10
|
-
|
-
|
Application: as corrosion inhibitor & desulphurization agent in oil exploitation, activator and desulphurization agent in chemical fertilizer production; also widely used in paint and other chemical industries. It is used in pigment, ceramics and manufacturer of crepe and sponge, being particularly suitable when low pigmentation is desired. It has other uses in the paint industry and as an activator in the rubber industry.