It combines strong acidity and low toxicity, and can form stable chelates with metal ions such as calcium and magnesium, effectively preventing the precipitation of metal ions. It remains stable even in high pH environments, avoiding failure due to acid-base fluctuations. Moreover, it can continuously exert scale inhibition effect at 200℃ and only decomposes slowly above 250℃.
The pure form is crystalline, facilitating long-term storage; the commercial product is diluted into a 50% viscous liquid, which can be directly added as needed without secondary dissolution, adapting to the application requirements of different production scenarios.
Although it is corrosive, under specified concentrations and operating standards, it is compatible with common raw materials in industries such as detergency, cosmetics, and pharmaceuticals without adverse chemical reactions. Its low toxicity also reduces risks to the environment and human contact.
Etidronic Acid (chemical name: 1-Hydroxyethylidene-1,1-diphosphonic Acid, abbreviated as HEDP) is an organophosphorus compound with strong chelating ability. It has a CAS Number of 2809-21-4, a Molecular Formula of C₂H₈O₇P₂, and a Molecular Weight of 206.028. Its pure form appears as colorless amorphous crystals, while the mainstream commercial form is a 50% concentration pale yellow viscous liquid. It is highly soluble in water, methanol, and ethanol, with a density of approximately 2.1 g/cm³ at room temperature, a stable melting point of 198~199℃, and a boiling point of up to 578.8℃ (at 760 mmHg). It possesses excellent thermal and chemical stability, and is widely used in industrial and fine chemical fields.
It serves as both an efficient scale inhibitor (in the water treatment field), a high-quality chelating agent (in the detergency field), and a stabilizer (in the cosmetics and pharmaceutical fields). A single product meets the needs of multiple scenarios, reducing the types of raw materials purchased by enterprises.
Compared with traditional phosphorus-containing scale inhibitors, its low toxicity and easy degradability have less impact on aquatic ecosystems, conforming to the "green production" concept of modern industry and reducing the pressure of environmental compliance.
It has strong thermal stability and can maintain high efficiency at 200℃, eliminating the need for frequent supplementary addition. Additionally, its preparation process is mature and raw materials are easily available. Commercial products have standardized concentrations, requiring no complex preparation during use, thus lowering the overall application cost.
As a core scale inhibitor, it is added to industrial circulating water and boiler feed water. By chelating calcium and magnesium ions in water, it prevents scale formation, extends the service life of equipment, and reduces the frequency of acid cleaning, thereby lowering equipment maintenance costs.
It is used in cleaning products such as laundry detergents and dishwashing liquids. As a chelating agent, it improves water hardness, prevents metal ions from reacting with surfactants to form precipitates, enhances cleaning efficiency, and reduces the dosage of detergents.
It is added to skin care products, shampoos, and other products. As a stabilizer, it inhibits the catalytic oxidation of metal ions, delays product deterioration, extends the shelf life, and its low toxicity ensures application safety.
As a raw material for bisphosphonates, it is used in the synthesis of specific drugs, supporting the application of drugs in the treatment of bone-related diseases (specific pharmaceutical use must comply with pharmaceutical-grade production standards).
It combines strong acidity and low toxicity, and can form stable chelates with metal ions such as calcium and magnesium, effectively preventing the precipitation of metal ions. It remains stable even in high pH environments, avoiding failure due to acid-base fluctuations. Moreover, it can continuously exert scale inhibition effect at 200℃ and only decomposes slowly above 250℃.
The pure form is crystalline, facilitating long-term storage; the commercial product is diluted into a 50% viscous liquid, which can be directly added as needed without secondary dissolution, adapting to the application requirements of different production scenarios.
Although it is corrosive, under specified concentrations and operating standards, it is compatible with common raw materials in industries such as detergency, cosmetics, and pharmaceuticals without adverse chemical reactions. Its low toxicity also reduces risks to the environment and human contact.
Etidronic Acid (chemical name: 1-Hydroxyethylidene-1,1-diphosphonic Acid, abbreviated as HEDP) is an organophosphorus compound with strong chelating ability. It has a CAS Number of 2809-21-4, a Molecular Formula of C₂H₈O₇P₂, and a Molecular Weight of 206.028. Its pure form appears as colorless amorphous crystals, while the mainstream commercial form is a 50% concentration pale yellow viscous liquid. It is highly soluble in water, methanol, and ethanol, with a density of approximately 2.1 g/cm³ at room temperature, a stable melting point of 198~199℃, and a boiling point of up to 578.8℃ (at 760 mmHg). It possesses excellent thermal and chemical stability, and is widely used in industrial and fine chemical fields.
It serves as both an efficient scale inhibitor (in the water treatment field), a high-quality chelating agent (in the detergency field), and a stabilizer (in the cosmetics and pharmaceutical fields). A single product meets the needs of multiple scenarios, reducing the types of raw materials purchased by enterprises.
Compared with traditional phosphorus-containing scale inhibitors, its low toxicity and easy degradability have less impact on aquatic ecosystems, conforming to the "green production" concept of modern industry and reducing the pressure of environmental compliance.
It has strong thermal stability and can maintain high efficiency at 200℃, eliminating the need for frequent supplementary addition. Additionally, its preparation process is mature and raw materials are easily available. Commercial products have standardized concentrations, requiring no complex preparation during use, thus lowering the overall application cost.
As a core scale inhibitor, it is added to industrial circulating water and boiler feed water. By chelating calcium and magnesium ions in water, it prevents scale formation, extends the service life of equipment, and reduces the frequency of acid cleaning, thereby lowering equipment maintenance costs.
It is used in cleaning products such as laundry detergents and dishwashing liquids. As a chelating agent, it improves water hardness, prevents metal ions from reacting with surfactants to form precipitates, enhances cleaning efficiency, and reduces the dosage of detergents.
It is added to skin care products, shampoos, and other products. As a stabilizer, it inhibits the catalytic oxidation of metal ions, delays product deterioration, extends the shelf life, and its low toxicity ensures application safety.
As a raw material for bisphosphonates, it is used in the synthesis of specific drugs, supporting the application of drugs in the treatment of bone-related diseases (specific pharmaceutical use must comply with pharmaceutical-grade production standards).
