The reaction of chlorocyan tetramer (2, 4-dichloro-6-isocyanodichloro-1, 3, 5-triazine) with aliphatic alcohol has been investigated and it was found that a chloroimino ether type new compound (2, 4-dichloro-6-alkoxychloroisocyano-1, 3, 5-triazine) was produced by substitution of a chlorine in isocyanodichloro group in the side chain with an alkoxyl group with good yield, remaining a chlorine in triazine ring unchanged. Hydrolysis of this chloroimino ether type compound gave a new urethane type compound (2, 4-dichloro-6-alkoxycarbonylamino-1, 3, 5-triazine) with good yield.