It's being used in CO₂Process creating and hardening Silica Gel by adding Sodium Silicate solution to molding sand and injecting CO₂gas and recently it's also used in self hardening molding using various Gel agents instead of CO₂gas.
It's used to prevent water leak or harden soft ground which is usually called Chemical Ground in combination with cement or gel agents such as sodium hydrogen carbonate ,sodium aluminate, and Sodium Silicofluoride, etc.
It's used to accelerate cement hardening in an urgent construction.
It's used as a binder for acid resistant & fire resistant cement and mortar.
It prevents corrosion of the materials of a laundry machine as well as performing cleaning clothes and softening light water and it's also used as a binder for synthetic detergent.
When bleaching fiber or paper using hydrogen peroxide, added Sodium Silicate prevents unnecessary resolution of hydrogen peroxide by heavy metals. For this case, use with anhydrous soda and adjust mixing ratio to 1.0~0.67 before use.
Cleaning and softening light water are essential parts of laundry soap, so it's being used widely for the purpose. It's also used as antiseptic.
Just like Potassium Silicate, it's used to bind protective coating and core of welding electrode. SiO₂is used to create Slug and NaO, KO is used to stabilize arc.
When filtering clay through water, small amount of Sodium Silicate decreases the viscosity of clay to make the process easier.
When aluminum sulfate, usual cleaning water agent, is used together with Sodium Silicate, it improves cleaning water capability.
It features with prompt bonding, box strength, and base, etc. and it's used to bond paper boxes and paper dishes.
Sodium Silicate is used to eliminate contamination when recovering pulp from disposed papers and to stabilize hydrogen peroxide when bleaching.
Silicic acid powder, the first fine powder obtained when adding acid to Sodium Silicate, is also called white carbon and it's used as filler for rubber in a massive amount just like Carbon Black.
Silica gel, used as an absorbent, is produced by adding acid to Sodium Silicate.