THE BIURET REACTION

Abstract

1 Because of the instability of "biuret salts," their molecular weights have been difficult to determine.This has, however, been accomplished for potassium copper succinimide, and the data obtained prove that the molecular, as well as the empirical, formula of this salt is Ka+ (Cu (succinimide)r)--.6H,O.This work, by Mary M. Rising, L. B. Jefferies, and C. C. Li, will presently be published.2 Proved by Schiff to be correct for potassium copper biuret, and confirmed by Rising, Hicks, and Moerke for other di-acid amides.3 This formula has been confirmed by Rising and Johnson for the acid imide diethylbarbituric acid.