Eric Hansen on sat 12 feb 05
Is anyone using seaweed ash? Kelp as I have read somewhere is sometimes use=
d in making "pearl ash" -potassium carbonate but I wanted to know if any of=
you are doing or have heard of a potter doing this?=20
-Eric
potassium carbonate, chemical compound, K2CO3, white, crystalline, deliques=
cent substance that forms a strongly alkaline water solution. It is availab=
le commercially as a white, granular powder commonly called potash, or pear=
l ash. It was originally obtained from wood ashes or from the residue left =
in pots after certain plants, e.g., kelp, were burned in them. It is prepar=
ed commercially chiefly by electrolysis of potassium chloride to form potas=
sium hydroxide, which is then carbonated (e.g., by adding carbon dioxide ga=
s). It is used in the manufacture of soft soaps and glass, for washing wool=
, and in the production of other potassium compounds. The Columbia Electron=
ic Encyclopedia, 6th ed. Copyright =A9 2004, Columbia University Press.
--=20
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