On the other hand, they show faintly acid properties since the hydrogen: of the amido group can be replaced by metals to give such compounds as mercury acetamide (CH 3 CONH) 2 Hg.
Acetamide,, CH 3 ï¿½Conh 2j is a white deliquescent crystalline solid, which melts at 82-83° C. and boils at 222° C. It is usually prepared.
O Coch 3, a colourless liquid of boiling point 193° C., may be prepared by heating phenol with acetamide.
Its hydrochloride melts at 163° C., and crystallizes from alcohol in colourless deliquescent prisms. Acetic anhydride converts the base into an acetamino-dimethyl pyrimidine, acetic acid and acetamide being also formed.
Acetyl urea, NH 2 CO NH 000H 31 formed by the action of acetic anhydride on urea, crystallizes in needles which melt at 212° C. and, on heating, strongly decomposes into acetamide and cyanuric acid.