460-19-5 CYANOGEN Carbon nitride Carbon nitride (C2N2) Cyanogen (C2N2) Cyanogen [UN1026] [Poison gas] Cyanogene [French] Dicyan Dicyanogen EINECS 207-306-5 Ethanedinitrile HSDB 2130 Nitriloacetonitrile Oxalic acid dinitrile Oxalonitrile Oxalyl cyanide Prussite RCRA waste no. P031 RCRA waste number P031 UN1026