Etidronic Acid, commonly known as HEDP (1-Hydroxyethylidene-1,1-diphosphonic acid), is a highly versatile and effective phosphonate compound. With its chemical formula C2H8O7P2 and CAS Number 2809-21-4, HEDP is recognized globally for its exceptional properties as a chelating agent, scale inhibitor, corrosion inhibitor, and peroxide stabilizer. These multifaceted characteristics make it an indispensable chemical in a wide array of industrial and commercial applications.

One of the primary and most significant applications of Etidronic Acid lies in water treatment systems. HEDP serves as an excellent scale and corrosion inhibitor, crucial for maintaining the efficiency and longevity of industrial equipment. It is widely employed in circulating cooling water systems, oil field operations, and low-pressure boilers. Industries such as electric power generation, chemical manufacturing, metallurgy, and fertilizer production heavily rely on HEDP to prevent the build-up of mineral scales and combat corrosive damage, thereby reducing maintenance costs and improving operational reliability. Typical dosages for scale inhibition range from 1–10 mg/L, while for corrosion inhibition, it is effectively used at concentrations of 10–50 mg/L.

Beyond water treatment, Etidronic Acid demonstrates its utility in various other sectors. In the dyeing industry, HEDP functions as a powerful peroxide stabilizer and a dye-fixing agent, ensuring color stability and preventing degradation during textile processing. For non-cyanide electroplating, it acts as a robust chelating agent, binding to metal ions and preventing undesirable reactions. Furthermore, HEDP is a valuable component in the light woven industry, where it serves as an effective detergent for cleaning both metal and non-metal surfaces. It is often combined with polycarboxylic acids (superplasticizers) to enhance its reducing capabilities.

The chemical properties of Etidronic Acid contribute greatly to its broad applicability. As a potent chelating agent, HEDP efficiently binds to problematic metal ions such as calcium, iron, and others. This capability is critical in preventing their precipitation and subsequent deposition as scale, as well as mitigating their potential environmental impact, especially in greywater discharge. Moreover, its phosphonate structure imparts significant corrosion resistance to unalloyed steel, protecting vital infrastructure. HEDP also possesses remarkable antioxidant properties, effectively retarding the rancidification and oxidation of fatty acids, which is beneficial in formulations requiring stability over time.

In the formulation of detergents and cleaning agents, HEDP and its salts play a vital role in mitigating the adverse effects of hard water. By sequestering calcium and magnesium ions, they improve the performance of cleaning products and prevent soap scum formation. Additionally, HEDP stabilizes peroxides used in bleaching processes, inhibiting degradation caused by the presence of transition metals, thus ensuring consistent and effective bleaching results.

While its primary uses are industrial, Etidronic Acid also finds niche applications in consumer products. Within the cosmetics industry, HEDP is utilized as a radical formation suppressant, an emulsion stabilizer, and a viscosity control agent, contributing to product consistency and shelf life. In swimming pool maintenance, it functions as a stain inhibitor by preventing metal ions from precipitating and discoloring pool surfaces. For industrial buyers looking to purchase Etidronic Acid (HEDP), it is essential to source from a reliable manufacturer. NINGBO INNO PHARMCHEM CO.,LTD. stands as a trusted supplier, offering high-quality Etidronic Acid with competitive price options to meet diverse industrial demands. To buy or inquire about the price, please contact our sales team.