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Zinc Orthophosphate
1.Properties:Zinc orthophosphate is is the best
substitute of conventional antirust pigments
containing heavy metals such as lead and chrome.
2.Usage:Used in various coating materials for
preparation of waterproof, acid-resistant or corrosion
preventive coating materials such as phenolic paint,
epoxy paint, acrylic paint, paste paint and water-soluble
resin paint in the fields of shipbuilding, automobile,
industrial machinery, light metal, household appliances
and metal containers for foods.
3.Zinc Phosphate Quality standar:
Project | I | II | III |
Whiteness % | 85-90 | 90-95 | ≥95 |
Zinc content % | ≥45 | ≥45 | ≥45 |
Phosphate % | 20-30 | 40-46 | 43-47 |
The PH value | 6-8 | 5-7 | 5-7 |
Oil absorption g/100g % | 25-35 | 25-35 | 25-35 |
Residue on sieve( 45um) % | ≤0.5 | ≤0.5 | ≤0.1 |
Moisture % | ≤1.5 | ≤1.5 | ≤1.5 |
Water-soluble salts % |
|
| ≤1 |
Cd ppm |
|
| 10-30 |
Cr ppm |
|
| 10-30 |
Hg ppm |
|
| ≤1 |
Pb ppm |
|
| 50-200 |
As ppm |
|
| 10-30 |
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