Hydroxy Ethylidene Diphosphonic Acid for Water Treatment is used for the effective treatment of boilers, cooling towers and cooling water systems, wastewater and industrial effluents. The Acid is a clear colourless liquid and has 60% active content. The Hydroxy Ethylidene Diphosphonic Acid for Water Treatment has acetic acid less than 1%, phosphorous acid less than 2.5%, chlorides less than 150 PPM and iron of less than 35 PPM.