When l-nitro-2-propoxy-2-nitraminoimidazoli-dine is treated with acetyl chloride in an excess of acetic acid previously saturated with hydrogen chloride one product is obtained. On the basis of its elemental analysis and the potentiometric titration of its freshly-prepared alkaline solution (Curve 2, Fig. 1, KA= 2 X which shows it to be monoacidic, this compound is thought to be 1-chloroethyl-3-nitrourea (111). Titration of an aged sample (curve identical with 2, ...
