DESCRIPTION
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.
Technical data
| 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 |
| pH | 6.5 | 1.0 | ISO 787-9 |
| Pb content (ppm) | 90 | 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 ISO 1524 | |
| Bonded water content (%) - 1 h at 600°C | Typ. 15.7 | Gravimetry | |
| RECOMMENDED SHELF LIFE : 5 YEARS |
Formulators Guidelines
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%.
