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Physical indicators:
Appearance | White powder |
Whiteness | ≥93 |
PH | 6-7 |
Average size | 2.5±0.5um |
Specific gravity | 2.7g/ml |
Oil absorption | 28±2.5g/100g |
Mohs hardness | 7.8 |
Chemical contents | Silicates |
Characteristics of pearl pigment:
Number | Test items | Standard |
1 | Bulk density g/cm3 | 0.13-0.35 |
2 | Particle diameter distribution % | Particle proportion within nominal grain diameter range ≥92% |
3 | Water content % | ≤0.2 |
4 | Oil absorption,g/100g | 60-90 |
5 | Dispersed phase | Even dispersal,without flock in the water;pigment particles are in even dispersal without over lap under the microscope. |
6 | TiO2 content(dry basis)% | 0-68 |
7 | Fe2O3 content(dry bases)% | 0-65 |
8 | PH value | 6-9 |
9 | Hydrotrope % | ≤0.3 |
Content of heavy metal is in conformity with the standards of France and ltaly:
1 | lead | <0.010% |
2 | Arsenic | <0.005% |
3 | Mercury | <0.005% |
4 | Cadmium | <0.010% |
5 | Selenium | <0.010% |
6 | Barium | <0.010% |
Advantage:
a. assure the high quality of products.
b. .all products will be supplied according to customers different requirements.
c. .one-stop service
d. A grade products with high purity
e. production capacity:1000-1500 metric ton/month.
