Industrial Chemicals

Sodium metasilicate is the chemical substance with formula Na
₂SiO
₃, which is the main component of commercial sodium silicate solutions. It is an ionic compound consisting of sodium cations Na⁺
and the polymeric metasilicate anions [–SiO²⁻
₃–]_n. It is a colorless crystalline hygroscopic and deliquescent solid, soluble in water (giving an alkaline solution) but not in alcohols.

Uses

• 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

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Sodium silicate is a generic name for chemical compounds with the formula Na
_2xSi
_yO
_2y+x or (Na
₂O)
_x·(SiO
₂)
_y, such as sodium metasilicate Na
₂SiO
₃, sodium orthosilicate Na
₄SiO
₄, and sodium pyrosilicate Na
₆Si
₂O
₇. The anions are often polymeric. These compounds are generally colorless transparent solids or white powders, and soluble in water in various amounts.

Sodium silicate is also the technical and common name for a mixture of such compounds, chiefly the metasilicate, also called waterglass, water glass, or liquid glass. The product has a wide variety of uses, including the formulation of cements, passive fire protection, textile and lumber processing, manufacture of refractory ceramics, as adhesives, and in the production of silica gel. The commercial product, available in water solution or in solid form, is often greenish or blue owing to the presence of iron-containing impurities.

Uses : Adhesive • Drilling fluids • Concrete and general masonry treatment • Detergent auxiliaries • Water treatment • Refractory use • Sand casting • Dye auxiliary • Passive fire protection • Metal repair • Automotive repair • Safe construction • Crystal gardens • Pottery • Sealing of leaking water-containing structures • Firearm cartridges