Nine hydroxytriazenes have been synthesized and screened for their insecticidal activity against one day oldDrosophila melanogasterMeig (Fruit fly). Out of all the nine compounds screened, 3-hydroxy-3-n-propyl-1-m-chlorophenyltriazene is the most active having LC50values 0.9847 ppm. The least active compound is 3-hydroxy -3-n-propyl-1-p-methylphenyltriazene, whose values are 16.52 ppm. In general, the LC50values range from 3.92 to 5.52 ppm.

Three hydroxytriazenes have been screened for their inhibitive action against corrosion of brass in ammoniacal environment. They have been found to possess 31.43 to 80.77%. Percentage inhibitive efficiency at 7.5 to 12 N ammonia solutions. The results indicate that hydroxytriazenes can further be explored for corrosion inhibitive property