Product Description of Sodium Metasilicate Pentahydrate CAS#10213-79-3
Sodium Metasilicate Pentahydrate, also known as instant water glass, is an inorganic silicate compound with the molecular formula Na₂SiO₃·5H₂O. It is typically supplied as a white powder or crystalline granule with excellent water solubility, while being insoluble in alcohol and acidic media.
This product is characterized by its strong alkalinity, moisture absorption ability, and excellent surface-active properties. Its aqueous solution provides effective pH regulation and can neutralize acidic substances, emulsify oils, disperse dirt, and prevent the redeposition of contaminants.
As one of the most widely used forms of sodium silicate, Sodium Metasilicate Pentahydrate combines the advantages of sodium silicate and sodium metasilicate. It demonstrates strong binding capacity toward calcium and magnesium ions, with a magnesium ion binding capacity exceeding 260 mg MgCO₃/g (35°C, 20 min), making it highly effective in water-softening applications.
Due to its multifunctional properties, Sodium Metasilicate Pentahydrate is widely applied in detergents, industrial cleaning agents, metal surface treatment, textile processing, ceramic manufacturing, and other chemical applications. It not only improves cleaning performance but also provides corrosion protection and formulation stability, making it an important ingredient in modern cleaning and industrial systems.
| 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
Sodium Metasilicate Pentahydrate is widely used as a multifunctional additive in household detergents, laundry powders, laundry pastes, industrial cleaning agents, food processing cleaners, metal cleaning formulations, textile processing, and paper deinking applications.
It plays an important role in the development of high-efficiency concentrated detergents, phosphate-free detergents, and low-phosphate cleaning products, improving cleaning performance while supporting environmentally friendly formulations. It is also utilized in industries such as ceramics, petroleum processing, and surface treatment.
The product appears as white square crystals or spherical granules with characteristics of being odorless, non-toxic, and highly water-soluble. It readily absorbs moisture from the air and may deliquesce under humid conditions.
With excellent alkaline buffering, detergency, emulsification, dispersion, wetting, and penetration properties, Sodium Metasilicate Pentahydrate helps effectively remove grease, dirt, and impurities while enhancing the stability and efficiency of cleaning systems.
Due to its strong alkalinity, highly concentrated solutions should be handled carefully, as prolonged contact may cause irritation or damage to fabrics and skin. Proper formulation and usage ensure optimal cleaning performance and safe application.
