Product Description of Sodium Metasilicate Pentahydrate CAS#10213-79-3
Sodium Metasilicate Pentahydrate (Na2SiO3⋅5H2O, CAS# 10213-79-3)—widely recognized as instant water glass—is a premier, eco-friendly inorganic salt typically supplied as a non-toxic, odorless white powder or crystalline granule. Highly hygroscopic, it readily dissolves in water while remaining insoluble in alcohol and acids, though concentrated solutions can be corrosive to skin and textiles.
As the most heavily utilized and representative variant of sodium metasilicates, it combines the overarching properties of soluble silicates. Beyond its cleaning, wetting, and soil-suspending prowess, it provides dependable buffering alkalinity alongside specialized metal-protection features for delicate substrates like aluminum, zinc, glass, and porcelain.
Chemical Properties
| English name: | SODIUM METASILICATE PENTAHYDRATE |
| English alternative name: | metsogranular;drymetakeiso5aq;dorimetakeiso5aq;Sodiumsilicatehydrate;SODIUMMETASILICATE5H2O;SODIUMSILICATE, PENTAHYDRATE;SodiChemicalbookumMestasilicatePentahydrate;SODIUMMETASILICATEPENTAHYDRATE;Sodiummetasi-licatepentehydrate;sodiumsilicatehydrate(na2sio3.5h2o) |
| Molecular formula | H5NaO4Si |
| Molecular weight | 120.11 |
| Melting point | 1088℃ |
| Density | 2.61 |
| Refractive index | 1.52 |
| Storage conditions Form | Store at room temperature |
| Color | Solid |
| Odor | White |
| pH | odourless |
| value | 12,5 (in aqueous solution: 10 g/, 20 °C) |
| Water solubility | Soluble in cold water |
| Merck | 148,642 |
| CAS Database | 10213-79-3(CAS DataBase Reference) |
Product Application of Sodium Metasilicate Pentahydrate CAS#10213-79-3
Valued for its multifunctional utility and environmental safety profile, Sodium Metasilicate Pentahydrate serves essential roles across multiple industries:
Cleaning & Detergent Formulations: Extensively incorporated into household laundry powders, heavy-duty industrial degreasers, institutional dishwashing compounds, and food-grade cleaners. It acts as a crucial builder in modern phosphate-free and low-phosphate concentrated detergent systems.
Textile & Paper Processing: Utilized effectively in fabric treatment stages and secondary paper deinking operations to break down bonds and lift contaminants.
Specialized Industrial Sectors: Applied in the ceramic manufacturing sector as a deflocculant and in petroleum extraction processes where high-performance alkalinity and water conditioning are required.
