Surfactants - Water treatment chemicals - 2025年7月
HEDP has a wide range of applications covering several industrial fields:Industrial circulating cooling water system: In electric power, chemical industry, metallurgy, fertilizer and other industries, HEDP acts as scale inhibitor and corrosion inhibitor, effectively preventing scale and corrosion problems and prolonging the service life of equipment.Boiler and oilfield water injection: In medium and low pressure boiler and oilfield water injection systems, HEDP helps to reduce scale and corrosion and ensure efficient system operation.Light Textile Industry: As a cleaning agent for metal and non-metal, HEDP can remove dirt and deposits on equipment and improve production efficiency.Bleaching and dyeing industry: As a peroxide stabilizer and color-fixing agent, HEDP improves dyeing quality and stability during the bleaching and dyeing process.Cyanide-free plating industry: as a complexing agent, HEDP stabilizes metal ions in the plating process and improves plating quality.Electronics industry: as a cleaning agent, HEDP removes impurities from electronic components to ensure the performance and reliability of electronic equipment.Daily chemicals: as chelating agent in detergents, to improve the washing effect.
HEDP is an organic compound, molecular formula is C2H8O7P2, molecular weight is 206.03, white crystalline particles, soluble in water as colorless to light yellow liquid. It is soluble in water, soluble in methanol and ethanol. It has a large dissociation constant in water and can generate stable complexes with metal ions. It can form stable adducts with compounds containing active oxygen to keep active oxygen stable. Low toxicity.HEDP is a kind of organic phosphoric acid scale and corrosion inhibitor, can form stable complexes with iron, copper, zinc and other metal ions, and can dissolve metal surface oxides.HEDP can still play a good corrosion and scale inhibition at 250℃, and is still very stable at high pH, not easy to be hydrolyzed, and is not easy to be decomposed under general light and heat conditions. Acid and alkali resistance, resistance to chlorine oxidation performance is better than other organic phosphoric acid (salt).HEDP and metal ions in the water, especially calcium ions to form a hexacyclic chelate, so HEDP has a better scale inhibition effect and has a clear solubility limit effect, and when used in combination with other water treatment agents, it shows ideal synergistic effect.HEDP solid is a high purity product, suitable for winter cold areas; especially for the electronics industry cleaning agent and daily use chemicals. HEDP solids are high purity products, suitable for winter cold areas; especially suitable for cleaning agent of electronic industry and additives of daily-use chemicals.Therefore, HEDP is mainly used as scale and corrosion inhibitor for boiler and heat exchanger, complexing agent for cyanide-free plating, chelating agent for soap, cleaning agent for metal and non-metal.