Sodium Carbonate Calcined
Na2CO3
Chemistry
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Volatiles
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Links to Other Materials
- Sodium Carbonate Decahydrate - Related
- Cache
Miscellaneous
- Family: Flux Source
- Region: North America
- Mined At: Unspecified
- Raw Mineral: No
- Generic: Yes
Notes
In ceramics, a common use of soda ash is as a soluble deflocculant in ceramic slips and glazes. It works well in combination with sodium silicate to produce slips that do not gel too quickly and whose rheology can be adjusted for changes in the hardness of the water. Higher soda ash in proportion to sodium silicate will produce a slip that gives a softer cast (stays wet longer). The total soda ash and sodium silicate amount should be tuned to create a slip that will eventually gel if left to stand. This thixotropic behavior will prevent it from settling.
Sodium carbonate is the preferred deflocculant for thinning glaze slurries.
Soda ash is not normally used as a source of Na2O in glazes because it is soluble. It is used as a source of sodium in frits and glass. Its solubility makes it an ideal flux for Egyptian paste glazes.
Data
- Melting Point (MP): 34C D
- Specific Gravity: 1.44
- Specific Gravity: 1.44
- Melting Point (MP): 34C D
URLs
- Statictics and Information - http://minerals.usgs.gov/minerals/pubs/commodity/soda_ash/
- www.sodaash.com - http://www.sodaash.com
- WikiPedia Entry - http://en.wikipedia.org/wiki/Sodium_carbonate
Suppliers
- Solvay Advanced Functional Materials
Authors
- Tony Hansen (Owner)
XML
<?xml version="1.0" encoding="UTF-8"?>
<material name="Sodium Carbonate Calcined" descrip="Na2CO3" generic="1" rawmineral="0" searchkey="Calcined Soda Ash, Anhydrous Sodium Carb, Na2CO3" loi="0.00">
<families>
<family name="Flux Source"/>
</families>
<regions>
<region name="North America"/>
</regions>
<oxides>
<oxide symbol="Na2O" name="Sodium Oxide, Soda" status="U" percent="58.490" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="" name="" percent="41.510" tolerance=""/>
</volatiles>
<references>
<reference name="seealso" reason=""/>
</references>
<suppliers>
<supplier name="Solvay Advanced Functional Materials" country="UK" url="" label=""/>
</suppliers>
<notes>
<note>In ceramics, a common use of soda ash is as a soluble deflocculant in ceramic slips and glazes. It works well in combination with sodium silicate to produce slips that do not gel too quickly and whose rheology can be adjusted for changes in the hardness of the water. Higher soda ash in proportion to sodium silicate will produce a slip that gives a softer cast (stays wet longer). The total soda ash and sodium silicate amount should be tuned to create a slip that will eventually gel if left to stand. This thixotropic behavior will prevent it from settling.
Sodium carbonate is the preferred deflocculant for thinning glaze slurries.
Soda ash is not normally used as a source of Na2O in glazes because it is soluble. It is used as a source of sodium in frits and glass. Its solubility makes it an ideal flux for Egyptian paste glazes.</note>
</notes>
<testdata>
<testitem testname="1" value="34C D"/>
<testitem testname="1" value="1.44"/>
<testitem testname="1" value="1.44"/>
<testitem testname="1" value="34C D"/>
</testdata>
</material>
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