Physical and chemical properties：
Zinc stannate usually exists as a white powdery solid with specific crystal structures, such as cubic crystal system or tetragonal crystal system. It is almost insoluble in water and common organic solvents at room temperature, but can be dissolved in acids. Zinc stannate is relatively stable at room temperature, but may decompose at high temperatures. It has a high melting point (>570°C), a density of about 3.9 g/cm³, a certain refractive index, and good optical transparency. In addition, zinc stannate possesses good chemical stability, adsorption performance, electrical conductivity and electron mobility, as well as excellent optical properties.
Applications：
Industrial-grade zinc stannate is used as a flame retardant and smoke suppressant in the plastics, fiber, and foam materials industries. It is an environmentally friendly product that replaces antimony trioxide. It is suitable for use in materials where the operating temperature is below 570℃.
| Specifications | Industrial Grade |
|---|---|
| Appearance | White powder |
| Assay（ZnSnO3）% | ≥98 |
| Sn% | ≥46 |
| Zn% | ≥26 |
| Cl% | ≤0.3 |
| Free water % | ≤0.5 |
| Melting pointwhiteness ℃ | 570 |
| Packing: | 25kg/bag,in woven or kraft paper bags with inner bags,or as customer's requirement. |
Transportation conditions: It is strictly prohibited to mix and transport with oxidants, acids, edible chemicals, etc. During transportation, exposure to sunlight, rain, and high temperatures should be prevented. The vehicle should be cleaned after transportation. For road transportation, it shall follow the specified route. Air transportation:Zinc stannate can be handled under ordinary cargo conditions.
Storage conditions: It should be stored in a cool and dry place. Attention should be paid to protecting it from sunlight, moisture and package damage. It is recommended to stack it on shelves or single-layer pallets.
Shelf life: Under the above storage and transportation conditions, the shelf life is two years.
