Improved Preparation of Guanidine Nitrate

A Laboratory Preparation of High-Purity Calcium Cyanamide

“…In steel, the nitrogen content of calcium cyanamide can give advantageous strength properties, and in the pharma industry, cyanamide, via calcium cyanamide, is a critical raw material for the antiulcer drug cimetidine 6 and several anticancer drugs. 7 Within the energetic materials industry, cyanamide and calcium cyanamide are important precursors for all energetics whose synthesis begins with guanidine, including tetrazene 8 and nitroguanidine 9 and the tetrazoles. 10 Calcium cyanamide produced by the Frank−Caro process is not pure; it contains impurities of calcium oxide and calcium cyanide among others.…”