Alternate Names: Potassium Carbonate, K2CO3, Pearlash
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|DENS - Density (Specific Gravity)||2.30|
|GSPT - Frit Softening Point||896C M|
This is the only material in ceramics that can deliver K2O in the exact amount required without bringing other oxides with it, however it is water soluble. The most common source of K2O in glazes is feldspar and normally all of the oxides that feldspar supplies are also needed in glazes (so it is rare that pure and much more expensive K2O is needed). Sometimes this is used to modify the color in glazes.
In the manufacture of frits, pearl ash can be an important source of potassium.
Out Bound Links
Hazards related to its use in ceramics and pottery industries
A host of water soluble materials are available to source most of the important oxides needed in ceramic glazes. However such materials cannot normally be used in glazes. Why? Because glazes are suspensions of particulate materials, not solutions of soluble materials. Such suspensions have a far low...
In Bound Links
Niter, Saltpeter, KNO3