Zinc phosphate is a chemical compound used as a pigment in various industries, especially in paint and coating manufacturing. This substance is typically available as a white or earthy-colored powder and is highly resistant to corrosion. It is produced by the reaction of zinc with phosphoric acid and is widely used as a protective coating due to its high anti-corrosion properties.
Zinc phosphate is applied in the production of paints, anti-corrosion coatings, and corrosion-resistant materials for marine, construction, and automotive industries. It is particularly effective in environments requiring high resistance to moisture and corrosion.
Technical Properties
| Chemical Formula | Zn₃(PO₄)₂ |
| Other Names: |
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| CAS Number | 7779-90-0 |
| Molecular Weight | 386.11 g/mol |
| Melting Point | 1.250°C |
| Solubility | Insoluble in water |
| Appearance | Synthetic inorganic pigment in powder of white colour. |
Applications
- Paint Industry: pigment in corrosion-resistant and moisture-resistant paints
- Automotive Industry: metal coatings to protect components from corrosion
- Marine Industry: Applied in anti-corrosion coatings for ships and marine equipment
- Construction Industry: protective coatings for metals in humid environments
Environmental Impact
Zinc phosphate is generally not hazardous to the environment, but its release into water sources should be prevented. If introduced into aquatic ecosystems, it may reduce water quality and harm living organisms. Proper handling and disposal are crucial to minimizing environmental impact.
Safety and Regulations
Zinc phosphate is generally safe for humans but may cause irritation with prolonged contact with skin or eyes. It is recommended to use gloves, safety goggles, and respiratory protection when handling this substance.
Packaging
Polypropylene bags of 20kg net each, stacked on wooden pallets; covered with stretch wrap