Description
Zinc dihydrogen phosphate, also known as zinc phosphate, is a chemical compound with the formula Zn(H2PO4)2. It is commonly used for its corrosion-inhibiting properties, particularly in the following applications:
- Metal Surface Treatment: Zinc phosphate is used as a pretreatment coating on metal surfaces, especially steel, to enhance paint adhesion and corrosion resistance. It provides a protective barrier between the metal substrate and the environment, preventing rust and corrosion.
- Paints and Coatings: Zinc phosphate is used as a pigment in paints and coatings, providing both corrosion protection and a matte finish. It is commonly used in primers for steel structures, automotive parts, and industrial machinery.
- Rust Converters: Zinc phosphate is used in rust converter products, which chemically convert iron oxide (rust) into a more stable compound, preventing further corrosion.
- Fertilizers: Zinc phosphate is used as a source of zinc in fertilizers, providing an essential micronutrient for plant growth. Zinc is important for enzyme function and protein synthesis in plants.
- Fire Retardants: Zinc phosphate is used as a component in some fire-retardant coatings and materials due to its ability to inhibit the spread of flames.
- Ceramics: Zinc phosphate is used as a bonding agent in ceramic materials, providing strength and durability to the final product.