• Vietnamese: Natri silicát / Thuỷ tinh lỏng / Nước thuỷ tinh
• English : Sodium silicate, Water glass.
• Chemical formula : (Na2O)(SiO2)
• Appearance: A homogeneous, viscous, transparent liquid that allows opaque white or ivory color

Characteristics

• The sodium silicate has a density of 2.61 g / cm3, the proportion is 1.40 1.42 g / cm3.
• The melting point of  sodium silicate is 1,088°C (1,361K; 1,990°F).
• Solubility in water is 22.2 g/100 ml at room temperature 25°C and 160.6 g/100 ml at 80°C.
• Sodium silicate is soluble in water but insoluble in alcohol.
• Sodium silicate has a very large viscosity, like glue, if not stored tightly, they are easy to decompose when left in the air.
• Sodium silicate is susceptible to decomposition of acids, including carbonic acid, and to precipitate silicic acid coagulation.

Application

• Soap industry: stuffing, bleaching, cleaning, precipitating, hardwater softening, buffering function, etc.
• Textile industry: Permeating, cleaning, mordant dyeing, stuffing, reinforcing function, etc.
• Paper industry: Catalyzing, stuffing, adhering, smoothing function, etc.
• Civil and architecture Industry: hardening, quickdrying, leakage prevention, heat proofing, fire protection, fabricate synthetic stone, interior decoration uses, etc.
• Mechanical industry: siliconcast, mold-fabrication, etc.
• Ceramics industry: Permeating, stuffing, crack prevention, leakage prevention, fire proofing function, etc.
• Soil improvement: Inject sodium silicate and other chemicals into underground to prevent soil liquefaction.

Others

• Preservation of eggs: used to keep them fresh.
• Drawing adhesive: used in adjusting brightness, weather-proofing.
• Hard water softener: used in making materials for fabricating artificial floating stone.
• Suspension agent: used to make white smoke; used as materials for elastic products, hybrid insecticides, paintings, etc.
• Welding: used in welding cover.
• Stone: surface treatment and surfactant.
• Miscellaneous: used in other chemical industry products, such as silica gel, drying agents, etc.