ZINC PHOSPHATE PZ20 is a corrosion inhibiting pigment suitable for a wide range of applications, from DIY to more demanding ones such as coil coating. It is a stable and non-hygroscopic white powder with a low tinting strength, it is easily dispersed.
Thanks to its low solubility, ZINC PHOSPHATE PZ20 is compatible with a wide range of solvent and water based resins.
|NOMINAL VALUE||TOLERANCE (+/-)||TEST METHOD|
|Zn content (%) - on the ignited product||50.0||2.0||ICP|
|PO4 content (%) - on the ignited product||48.0||2.0||ICP|
|Oil absorption (cm3/100g)||27||5||ISO 787-5|
|Sieve residue - 45 μm (%)||0.05||max||ISO 787-7|
|Pb content (ppm)||100||max||ICP|
|Cd content (ppm)||100||max||ICP|
|Density (g/mL)||Typ. 3.2||ISO 8130-2|
|D50 (μm)||Typ. 7||ISO 13320|
|Fineness Hegman||Typ. 5.5||ISO 787-5
|Bonded water content (%) - 1 h at 600°C||Typ. 15.7||Gravimetry|
|RECOMMENDED SHELF LIFE : 5 YEARS|
Excellent: Good: Possible: Not yet tested: __ Not recommended: nr
* : Normally used in association with other pigments (ex : ion exchanged Silica)
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%.