Sodium metasilicate reacts with acids to produce silica gel.[5]
Cements and Binders - dehydrated sodium metasilicate forms cement or binding agent.
Pulp and Par - sizing agent and buffer/stabilizing agent when mixed with hydrogen peroxide.
Soaps and Detergents - as an emulsifying and suspension agent.
Automotive applications - decommissioning of old engines (CARS program), cooling system sealant, exhaust repair.
Egg Preservative - seals eggs increasing shelf life.
Crafts - forms "stalagmites" by reacting with and precipitating metal ions. Also used as a glue called "soluble glass".
Hair coloring kits