Zinc phosphate
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| Zinc phosphate | |
|---|---|
| Image:Zinc phosphate.jpg | |
| General | |
| Other names | |
| Molecular formula | Zn3(PO4)2 |
| Molar mass | 386.11 g/mol |
| Appearance | white crystals |
| Crystal structure | monoclinic |
| CAS number | [7779-90-9] |
| Properties | |
| Density and phase | 4 g/cm3, solid |
| Solubility | insoluble in water |
| Melting point | 900°C |
| Boiling point | ? |
| Hazards | |
| EU classification | not listed |
| NFPA 704 | |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Zinc phosphate (Zn3(PO4)2) is an inorganic chemical compound used as a corrosion resistant coating on metal surfaces either as part of an electroplating process or applied as a primer. Zinc phosphate coats better on a crystaline structure than bare metal, so a seeding agent is often used as a pre-treatment. One common agent is Sodium pyrophosphate[1]
[edit] References
- ^ Menke, Joseph T.. Zinc Phosphate Coatings on NonFerrous Substrates -- Part I. PFOnline. Retrieved on August 7, 2006.
[edit] External links
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