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Impure potassium carbonate.
Synonym(s): pearl-ash
[E. pot-ashes]


(pot'ash?) [Dutch potasschan, pot ashes] Potassium carbonate.
Potash can refer to other salts of potassium as well.
CAS # 584-08-7

caustic potash

Potassium hydroxide.

sulfurated potash

A liver-colored or green-yellow substance made up of potassium thiosulfate and potassium polysulfides and containing 12.8% sulfur as a sulfide; a principal ingredient of white lotion.

potash, potassa

chemically speaking, potassium hydrate, a strong caustic. In farming terms, potassium carbonate as it is mixed into fertilizers to redress a deficiency of potassium in the soil.