Zinc aluminum phosphate

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


Technical Data (技术参数)


Items (项目)

Standard(标准)

1

锌含量                         %                                           Zinc content

38.5--40.5

2

磷酸根含量                     %      Phosphate content   (PO4)

53--56

3.

铝含量                         %                 

Aluminum content          

4.0--5.5

4

600℃灼烧失重     

Loss on ignition(600℃)                                       

9--12.5

5

PH

PH value              

5.5~6.5

6

铅含量                     ≤ ppm

Lead content    

50

7

镉含量                     ≤ ppm 

Cadmium content

10

8

吸油量                     g/100g

Oil absorption value

30--40

9

32微米筛余物               ≤ %   

Residue on 32μm

0.01


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