Sodium metasilicate 0AQ
General Product Information
| Article | Sodium metasilicate 0AQ |
| Synonyms | Sodium metasilicate anhydrate |
| CAS No. | 6834-92-0 |
| EEG No. | – |
| EINECS No. | 229-912-9 |
| IMO | Class 8 (C) |
| Tariff Code | 28391100 |
| UN No. | 3253 |
| VLG/ADR | Class 8, Packing Group III |
Description
Sodium metasilicate 0AQ is an inorganic, white crystalline powder belonging to the family of water gases (silicates). It is highly alkaline, highly soluble in water and forms a viscous solution with excellent cleaning, dispersing and anti-corrosion properties. Anhydrous (0AQ) refers to the anhydrous form of sodium metasilicate, which is preferred at industrial Applications due to its higher concentration of active ingredient .
Also available:
Sodium metasilicate 5AQ (Technical Grade),
Sodium metasilicate 9AQ (Technical Grade)
Characteristics
- Odor: Odorless.
- Hygroscopic: Yes.
- Color: White.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | Na2SiO3 |
| Molar Weight | 122.06 g/mol |
| Melting Point | Approx. 1088 °C. |
| Boiling Point | – |
| Density | Approx. 2.6 g/cm³. |
| Refractive Index | – |
| pH | 12-13 (on 1% solution) |
Interessing Links
- CAS Common Chemistry – Sodium metasilicate
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Sodium silicate – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Sodium metasilicate
Applications
Sodium metasilicate 0AQ is applied in various ways, for instance:
1. Chemical Industry
Raw material for production of silica gel, zeolites, catalyst carriers.
2. Cleaning Agents
In industrial degreasers, metal cleaners, car shampoos and detergents because of its emulsifying and grease-dissolving properties.
3. Construction Industry
Used in cement hardeners, mortars and as a binder in refractory materials.
4. Water Treatment
Used as a corrosion inhibitor and pH buffer in boiler water and cooling systems.
5. Paper & Textile Industry
For bleaching, de-inking and disinfecting.
6. Adhesives & Coatings
As a component in heat-resistant and chemical-resistant adhesives and paints.