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ZINC PHOSPHATES
ZINC PHOSPHATE PZW2
Zinc Phosphate Di-hydrate, Zn3(PO4)2, 2H2O

Description
PZW2 is a corrosion inhibiting pigment suitable for a wide range of applications. It is an easily dispersed white powder with a low tinting strength.
Thanks to its low solubility, Zinc Phosphate PZW2 is compatible with a wide range of solvent and water based resins.
Technical data

 Nominal
Value
Tolerance
(+/-)
Test
method
Bonded water content (%) - 1h at 600°CTyp. 9.5Gravimetry
Fineness HegmanTyp. 5ISO 787/5 - ISO 1524
Fineness NorthTyp. 6ISO 787/5 - ISO 1524
D50 (μm)Typ. 5Laser granulometry
Specific gravityTyp. 3.3ISO 787/10
pH7.01.0ISO 787/9
Sieve residue - 45 μm (%)0.05maxISO 787/7
Oil absorption (cm3/100g)315ISO 787/5
PO4 content (%) - on the ignited product48.02.0ICP
Zn content (%) - on the ignited product50.02.5ICP
Pb Content (ppm)100maxICP
Cd content (ppm)100maxICP
Recommended shelf life : 5 years
Formulators Guidelines

Solvent BornePerformance 
Short Oil Alkyd
Medium oil Alkyd
Long oil Alkyd
2K Epoxy
High Solid Epoxies
Epoxy Ester
PU
Water BornePerformance 
Water reducible Alkyd
Alkyd emulsion
Epoxy Ester
2K Epoxy
Acrylics and Modified acrylics
PowderPerformance 
Polyester
Silicone
Epoxy
Speciality coatingsPerformance 
Wash primers
Coil Coatings
Excellent :     Good :     Possible :     Not recommended : nr
Best performances are obtained with a typical loading of 5 to 12% by weight on the total formulation and a PVC ranging from 20% to 40%
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