Sodium metasilicate nonahydrate is white cubic crystals or crystalline powder, odorless and salty in taste. It is easy to absorb moisture and deliquesce when exposed to air; when heated above 100℃, it loses crystal water and converts into anhydrous form. Its aqueous solution precipitates silicic acid upon contact with acid, and features strong alkalinity, detergency, emulsification, dispersion, buffering and water softening performance for hard water.

1. Washing industry：High-efficiency auxiliary for laundry detergents, dishwashing detergents and industrial cleaners, providing an alkaline environment and emulsifying oil stains.

2. Textile printing and dyeing：Used for cotton yarn scouring and fabric refining, removing impurities and greases.

3. Papermaking industry：Applied in paper deinking, printing stain removal, and as a cooking auxiliary agent.

4. Others：Peroxide bleaching stabilizer, metal surface treatment agent, ceramic industry auxiliary, and vegetable oil recovery auxiliary agent.