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Potassium silicate

Potassium silicate is a water-soluble and glass-forming silicate salt of general formula K2SiO3 with many common uses for at least a century.
Contents

1 Uses
1.1 Woodwork protection against fire
1.2 Horticulture
1.3 Industrial uses
2 See also
3 References
4 External links

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.

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