Minerals and Metals in Ancient India v2.c44.s1.10
Minerals and Metals in Ancient India v2.c44.s1.10
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v2.c44.s1.10
Young plant *Butea frondosa* used to be dried, reduced to ashes and lixiviated with water to produce potassium carbonate, *audbhida* salt or *kṣāra* (alkali).