Sodium Metasilicate

Los metasilicatos de Sodio son compuestos químicos donde el contenido de Oxido de Sodio y oxido de silicio son iguales, variando el porcentaje de alcalinidad de acuerdo al requerimiento del cliente.

¿Qué es?

Sodium silicate or sodium silicate (common name of the compound sodium metasilicate), also known as water glass, is an inorganic substance, with the formula Na2SiO3 that is found in aqueous solutions and also in solid form in many compounds, including cement. , waterproofers, refractors, and textile processes.

It is formed when sodium carbonate and silicon dioxide react to form sodium silicate and carbon dioxide:

Na2CO3 + SiO2 → Na2SiO3 + CO2


Sodium silicate is a white solid that dissolves directly in water, producing an alkaline solution. It is part of a set of related compounds that include sodium orthosilicate, Na4SiO4; sodium pyrosilicate, Na6Si2O7, and others. They are all glassy, colorless and soluble in water.


Sodium silicate is stable in neutral and alkaline solutions. In acidic solutions, the silicate ion reacts with hydrogen ions to form silicic acid, which, when heated and roasted, forms silica gel, a hard, glassy substance.


Sodium Metasilicate Pentahydrate has properties that help loosen dirt, emulsify oils, greases and baits, deflocculate inorganic particles, prevent re-depositing of dirt and allow washed material to rinse easily.

It is also excellent for stabilizing the pH of a solution, keeping the pH high throughout the cleaning process while the solution is being attacked by acidic dirt.

It is used in the cleaning and stripping of metals, acts as a deflocculant and pH regulator in the industrial detergent industry, degreaser, mineral flotation and used in the ceramic industry to increase the surface charge density and mobility of the mixture.

  • Detergentes: La aplicación primaria del metasilicato de sodio pentahidratado ha sido en la formulación de los detergentes de uso industrial, en forma individual o en conjunto con agentes tensoactivos, secuestrantes y otros constituyentes
  • Industria petrolera: En la preparación de lodos para la perforación de pozos
  • Minería: Se utiliza para la flotación de minerales.
  • Papel: Mejora las propiedades como la brillantez.