Sodium tetrasilicate is an inorganic compound, a salt of sodium and silicic acid with the formula Na 2 Si 4 O 9 , colorless crystals, soluble in water, forms a crystalline hydrate .
| Sodium tetrasilicate | |
|---|---|
| Are common | |
| Systematic name | Sodium tetrasilicate |
| Traditional names | Sodium silicate |
| Chem. formula | Na 2 Si 4 O 9 |
| Physical properties | |
| Molar mass | 302.32 g / mol |
| Density | 3.0 g / cm³ |
Content
Getting
- In nature, there is a rare mineral ertitsziit - Na 2 Si 4 O 9 with impurities [1] .
- In nature, the mineral makatite , Na 2 Si 4 O 9 • 5H 2 O, is found with impurities [2] .
Physical Properties
Sodium tetrasilicate forms colorless monoclinic crystals, space group P 2 1 / n , cell parameters a = 1.0875 nm, b = 0.9326 nm, c = 1.9224 nm, β = 90.18 °, Z = 12 [ 3] .
Soluble in water, not soluble in ethanol .
Notes
- ↑ Ertitszyit. From GeoWiki - The Open Encyclopedia of Earth Sciences.
- ↑ Makatit. From GeoWiki - The Open Encyclopedia of Earth Sciences.
- ↑ Fleet ME Sodium tetrasilicate: A complex high-pressure framework silicate // American Mineralogist. - 1996. - T. 81 . - S. 1105-1110 .
Literature
- Chemist Handbook / Redcoll .: B. P. Nikolsky et al. - 3rd ed., Rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.