Sodium metasilicate is a salt of silicic acid, and its molecular formula can be written as Na2SiO3·nH2O. Sodium metasilicate is a low molecular crystal prepared by the thermal reaction of a common bubble base with caustic soda
Synonyms :Sodium metasilicate
CAS no:6834-92-0
Molecular formula:Na2SiO3
Molecular weight:M=122.066
Appearance : white crystal powder
Sodium metasilicate anhydrous is strongly alkaline, having strong capacity of cleaning, buffering and softening, counteracting acidic contamination, emulsifying fat and oil, deflocculating to inorganic. It can replace STPP to be used for the manufacture of effective detergents and rust remover for metal, reducing environmental pollution, preventing corrosion for metal (zinc, aluminum, etc.). Therefore, sodium metasilicate anhydrous is widely used for the manufacture of a variety of detergents, used as rust remover for metal, grinding aids for ceramics, deinking agent for paper, dyeing and printing auxiliary for removing oil in textile industry, and also used as the raw material for flameproofing agent, plastic maintenance agent, water retention agent, etc.
Sodium metasilicate anhydrous specification
Na2O | 50.0-52.0% |
SiO2 | 45% Min |
Bulk density(g/cm 3 ） | 1.05-1.35 |
PH | 12-13 |
Water Insoluble matter | 0.25% Max |
Fe | 200 ppm Max |
Particle Size（18-60mesh）% | ≥93.0 |
Whiteness% | ≥85 |