HEDP is an organic phosphonic acid type scale inhibitor and corrosion inhibitor. It can form stable complexes with various metal ions such as iron, copper, and zinc, and can dissolve the oxides on the metal surface. It still exhibits excellent corrosion inhibition and scale prevention effects at 250℃, remains stable at high pH, is not prone to hydrolysis, and is not easily decomposed under normal light heating conditions. Its acid and alkali resistance, and chlorine oxidation resistance are better than those of other organic phosphonic acids (salts). It can form hexacyclic chelates with metal ions in water, especially calcium ions, thus having a good scale prevention effect and a significant solubility limit effect. When used in combination with other water treatment agents, it shows an ideal synergistic effect. 
HEDP solid is a high-purity product and is suitable for cold regions in winter; it is particularly suitable for cleaning agents in the electronics industry and additives for daily chemicals. 
HEDP is widely used in industrial circulating cooling water systems of industries such as power, chemical engineering, metallurgy, and fertilizer production; it is also used for scale prevention and corrosion inhibition in medium and low-pressure boilers, oilfield water injection and oil transportation pipelines. In the textile industry, it can be used as a cleaning agent for metals and non-metals, a peroxide stabilizer and color fixative in the dyeing and printing industry, a complexing agent in the cyanide-free electroplating industry, and a carrier for radioactive elements in the pharmaceutical industry.