Potassium silicate
From Wikipedia, the free encyclopedia
| Potassium silicate | |
|---|---|
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| Identifiers | |
| CAS number | 1312-76-1 |
| Properties | |
| Molecular formula | K2O3Si |
| Molar mass | 154.28 g mol−1 |
| Solubility in water | Soluble |
| Hazards | |
| EU classification | Corrosive (C) |
| R-phrases | R34, R37 |
| S-phrases | (S1/2), S13, S24/25, S36/37/39, S45 |
| Related compounds | |
| Other anions | Potassium carbonate Potassium germanate Potassium stannate Potassium plumbate |
| Other cations | Sodium silicate |
 Y (what is this?) (verify)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
| Infobox references | |
Potassium silicate is a water-soluble and glass-forming silicate salt that is commonly used as an adhesive in welding rods.
This compound has been in use for at least a century.
- Rendering the woodwork of houses secure against catching fire can be done at an insignificant cost, and with little trouble. Saturate the woodwork with a very delicate solution of silicate of potash as nearly neutral as possible, and when this has dried, apply one or two coats of a stronger solution."[1]
In horticulture, potassium silicate is used as a soluble source of potassium and silicon. It also makes the growing medium more alkaline.
Some cleaning formulations use potassium silicate, which also serves as a corrosion inhibitor in cosmetics.[2][dead link]
Formula is K2SiO3.