Answer: cyanamide

AnswerCrossword Clue
cyanamidewhite, crystalline, unstable, deliquescent solid, CH2N2, usually produced by the action of ammonia on cyanogen chloride or by the action of sulfuric acid on calcium cyanamide
cyanamidethe amide of cyanogen, a white crystalline substance also CYANAMID, CYANOGENAMIDE
cyanamide(not in technical use) calcium cyanamide