Source, Etc

Butea gum is the juice obtained by incising the stem of Butea frondosa, Roxburgh (N.O. Leguminosoe), dried.


The drug usually occurs in small, irregular, angular fragments to one side of which dull, buff coloured portions of the cortex and cortex of the stem sometimes adhere. When fresh it is ruby-red, transparent in small fragments, and brittle; but on keeping it becomes dull, nearly black, opaque and tough. It is readily reduced to a reddish powder and has an astringent taste. It is partially soluble in water and in alcohol.


The chief constituent is kinotannic acid (15 to 62 per cent.); the insoluble matter may vary from 10 to 46 per cent.


Similar to those of kino.