On the other hand, they were overcome by the Autariatae, an Illyrian tribe; the date of HO 2 C C =N NC 6 H 4 NH 2 NH.
It gives mono-metallic salts of the type NC NHM when treated with aqueous or alcoholic solutions of alkalis.
Those of the heavy metals are mostly insoluble in water, but are soluble in a solution of potassium cyanide, forming more or less stable double salts, for example KAg(NC)2, KAu(NC) 2.
Lead cyanide, Pb(NC) 2, however, does not form such a salt, and is insoluble in potassium cyanide solution.
Ammonium cyanide, NH 4 NC, a white solid found to some slight extent in illuminating gas, is easily soluble in water and alcohol, and is very poisonous.