Properties:Appearance white fine crystal, not dissolving in water and ethyl alcohol, dissolving in acid, alkali.
SZPA is one kind of white environment-friendly anti rust pigment, it can be the substitute of old anti rust pigments which contain heavy metals
It can be used in all kind of waterproof, acid proof and anti-corrosive coating, including alkyd paint, epoxy paint, acrylic paint, phenol paint, and water soluble resin paint for boat, automobile, machine, light metal, home appliance and metal vessel, etc.
SZPA has higher phosphate content than that of the common zinc phosphate. It can be used in many applications with the anti-corrosive performance owing to no aka-line substance existed in it, which is improved on the content of phosphate. It has the longer protective property than the common zinc phosphate if used in coating because it can form the more effective protective layer in the metal surface owing to regularly increasing of water-soluble fraction
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Technical Data
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Items
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Standard
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| 1 |
Zinc content % |
38.5--40.5
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| 2 |
Phosphate content (PO4) % |
53--56
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| 3. |
Aluminum content % |
4.0--5.5
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| 4 |
Loss on ignition(600℃) |
9--12.5
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| 5 |
PH value |
5.5~6.5
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| 6 |
Lead content ≤ ppm |
50
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| 7 |
Cadmium content ≤ ppm |
10
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| 8 |
Oil absorption value g/100g |
30--40
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| 9 |
Residue on 32μm ≤ % |
0.01
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