Potassium silicate
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potassium silicate
(pə′tas·ē·əm ′sil·ə′kāt)
(inorganic chemistry) SiO2&dbnd;K2O A compound existing in two forms, solution and solid (glass); as a solution, it is colorless to turgid in water, and is used in paints and coatings, as an arc-electrode binder and catalyst and in detergents; as a solid, it is colorless and water-soluble solid, and is used in glass manufacture and for dyeing and bleaching.
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Potassium silicate
| Potassium silicate | |
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Potassium metasilicate |
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Other names
Liquid glass |
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| Identifiers | |
| CAS number | 10006-28-7  |
| PubChem | 66200 |
| ChemSpider | 59585  |
| EC number | 233-001-1 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | K2O3Si |
| Molar mass | 154.28 g mol−1 |
| Exact mass | 153.889084121 g mol-1 |
| Appearance | White crystals |
| Hazards | |
| EU classification | Corrosive (C), Irritant (Xi) |
| R-phrases | R34, R37 |
| S-phrases | (S1/2), S13, S24/25, S36/37/39, S45 |
| NFPA 704 |
 0
1
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| Related compounds | |
| Other anions | Potassium carbonate Potassium germanate Potassium stannate Potassium plumbate |
| Other cations | Sodium silicate |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Potassium silicate is a water-soluble and glass-forming silicate salt of general formula K2SiO3 with many common uses for at least a century.
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Contents
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Uses
Woodwork protection against fire
Impregnation of wood with a potassium silicate solution is an easy and low cost way for rendering the woodwork of houses secure against catching fire. The woodwork is first saturated with a diluted and nearly neutral solution of potash silicate. After drying, one or two coats of a more concentrated solution are usually applied.[1]
Horticulture
In horticulture, potassium silicate is used as a soluble source of potassium and makes also the growing medium more alkaline.
Industrial uses
Some metal cleaning formulations use potassium silicate, which also serves as a corrosion inhibitor.[2] It also finds various uses in the fabrication of welding rods or even of cosmetics.
See also
References
- ^ Cobleigh, Rolfe (1909). Handy farm devices and how to make them. Part II: Worth knowing to render wood fireproof. New York: Orange Judd. http://www.journeytoforever.org/farm_library/device/devicesToC.html.
- ^ Elmore AR (2005). "Final report on the safety assessment of potassium silicate, sodium metasilicate, and sodium silicate". Int. J. Toxicol. 24 (Suppl 1): 103–17. PMID 15981734. http://ijt.sagepub.com/cgi/content/abstract/24/1_suppl/103.
External links
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