Potassium Carbonate
PEARL ASH - K2CO3
Chemistry
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Volatiles
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Miscellaneous
- Family: Flux Source
- Region: None
- Mined At: Unspecified
- Raw Mineral: No
- Generic: Yes
Notes
Water soluble. The only material in ceramics that can deliver K2O in the exact amount required without bringing other oxides with it. The most common source is feldspar. However normally all of the oxides that feldspar supplies are also needed in glazes so it is rare that pure (and of course much more expensive) K2O is needed. However in the manufacture of frits, pearl ash can be an important source of potassium.
Used to modify color in glazes.
Data
- Specific Gravity: 2.30
- Melting Point (MP): 896C M
Linked Articles
Carbonate de Potassium par Edouard Bastarche
Toxicity of potassium carbonate related to its use in ceramics and potteryPotassium Carbonate Toxicity by Edouard Bastarche
Toxicity of potassium carbonate related to its use in ceramics and pottery
URLs
- WikiPedia description - http://en.wikipedia.org/wiki/Potassium_carbonate
Suppliers
- Generic
Authors
- Tony Hansen (Owner)
XML
<?xml version="1.0" encoding="UTF-8"?>
<material name="Potassium Carbonate" descrip="PEARL ASH - K2CO3" generic="1" rawmineral="0" searchkey="" loi="43.00">
<families>
<family name="Flux Source"/>
</families>
<oxides>
<oxide symbol="K2O" name="Potassium Oxide" status="U" percent="68.160" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="" name="" percent="31.830" tolerance=""/>
</volatiles>
<suppliers>
<supplier name="Generic" country="" url="" label=""/>
</suppliers>
<notes>
<note>Water soluble. The only material in ceramics that can deliver K2O in the exact amount required without bringing other oxides with it. The most common source is feldspar. However normally all of the oxides that feldspar supplies are also needed in glazes so it is rare that pure (and of course much more expensive) K2O is needed. However in the manufacture of frits, pearl ash can be an important source of potassium.
Used to modify color in glazes.</note>
</notes>
<testdata>
<testitem testname="0" value="2.30"/>
<testitem testname="0" value="896C M"/>
</testdata>
</material>
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