What Is Zinc Phosphate?
Zinc phosphate, with the chemical formula Zn3(PO4)2, is known for its use in various industrial applications. It exists as anhydride and tetrahydrate forms and is recognized for its toxicity to reproduction, specific organs upon repeated exposure, and the aquatic environment under GHS classifications.
Uses of Zinc Phosphate
1. Metal Treatment
Utilized for zinc plating and treatment on steel materials, zinc phosphate creates a protective film that prevents rust and enhances paint adhesion, especially valued in automotive coatings for its corrosion resistance.
2. Pigment
As a non-toxic alternative to lead and chrome pigments, zinc phosphate serves as an anti-corrosion pigment in various paint formulations, offering stability, neutralizing acidic corrosion ions, and widely used in both oil-based and water-soluble paints.
Properties of Zinc Phosphate
A white, odorless compound with a molecular weight of 386.13, insoluble in water and alcohols but soluble in dilute mineral acids and acetic acid. It decomposes at temperatures above 900°C without specific information on flash or boiling points.
Other Information on Zinc Phosphate
1. Safety
Regarded as harmful to fertility and unborn children, with potential to damage the blood system upon long-term exposure. It is highly toxic to aquatic life and classified as a deleterious substance, necessitating careful handling and adherence to safety guidelines.
2. First Aid Measures
Immediate medical attention is advised in case of inhalation, skin or eye contact, or ingestion. Use protective gear to manage spills and avoid potential health risks.
3. Handling Instructions
Recommended use of protective equipment, including glasses, masks, and gloves, with installations like eye wash stations and safety showers in work areas. Avoid inhalation and ensure proper hygiene practices post-handling.
4. Storage and Disposal
Store in sealed, intact containers and dispose of according to legal and local guidelines, ensuring environmental protection and safety measures during spill management.