Zinc phosphate hydrate (Zn3(PO4)2•xH2O)-Powder

Characteristic

Zinc phosphate is an inorganic compound with the formula Zn₃(PO₄)₂)(H₂O)₄. Zinc phosphate coats better on a crystalline structure than bare metal, so a seeding agent is often used as a pre-treatment. One common agent is sodium pyrophosphate.

Chemical formula:H₄O₁₂P₂Zn₃

Molar mass: 454.11 g/mol

Appearance: white solid

Density: 3.998 g/cm³

Melting point :900 °C (1,650 °F; 1,170 K)

Solubility in water:insoluble

Magnetic susceptibility (χ):−141.0·10⁻⁶cm³/mol

Refractive index (nD):1.595

Crystal structure:monoclinic

  

Application

 

Zinc phosphate hydrate is used in dentistry. It is commonly used for luting permanent metal restorations and as a base for dental restorations. Zinc phosphate cement is also used for cementation of inlays, crowns, bridges, and orthodontic appliances and occasionally as a temporary restoration.