1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) is a multifunctional organophosphonic acid compound that plays a critical role in water treatment and industrial applications. Known for its exceptional ability to chelate metal ions and inhibit scale and corrosion, HEDP is widely used across various industries, including power generation, chemical processing, and manufacturing. This article provides an in-depth analysis of HEDP's properties, technical specifications, applications, and the company behind its production, Hebei Longke Water Treatment Co., Ltd.
CAS No. 2809-21-4
Molecular Formula: C2H8O7P2
Molecular Weight: 206.02
Structural Formula:
HEDP is a colorless to pale yellow aqueous solution or white crystalline powder, depending on its form. It is renowned for its chemical stability, resistance to hydrolysis, and compatibility with high-pH environments. The compound forms stable chelates with metals like iron, copper, and zinc, making it an effective agent for preventing corrosion and scale formation in industrial systems.
HEDP exhibits several advantageous properties that make it a preferred choice in water treatment and industrial applications:
The following table outlines the technical specifications of HEDP in both liquid and solid forms:
| Items | Index (Liquid) | Index (Solid) |
|---|---|---|
| Appearance | Clear, Colorless to pale yellow aqueous solution | White crystal powder |
| Active Content (HEDP), % | 58-62 | 90.0 min |
| Active Content (HEDP·H2O), % | - | 98.0 min |
| Phosphorous Acid (as PO33-), % | 2.0 max | 0.8 max |
| Phosphoric Acid (as PO43-), % | 0.8 max | 0.5 max |
| Chloride (as Cl-), % | 0.02 max | 0.01 max |
| pH (1% water solution) | 2.0 max | 2.0 max |
| Density (20℃), g/cm3 | 1.40 min | - |
| Fe, mg/L | 20.0 max | 10.0 max |
| Color APHA (Hazen) | 40.0 max | - |
| Ca Sequestration (mg CaCO3/g) | 500.0 min | - |
HEDP is utilized across a wide range of industries due to its versatility and effectiveness:
The recommended dosages vary depending on the application: 1-10 mg/L for scale inhibition, 10-50 mg/L for corrosion control, and 1000-2000 mg/L for cleaning. HEDP is typically used in conjunction with other water treatment chemicals to achieve optimal results.
HEDP is available in both liquid and solid forms, with the following packaging options:
For optimal storage, HEDP should be kept in a cool, dry, and shaded area for up to 12 months. Proper handling and storage ensure the product maintains its efficacy and safety.
While HEDP is a powerful industrial chemical, it is acidic and requires careful handling. Safety measures include:
Following these guidelines ensures the safe use of HEDP in industrial settings.
Hebei Longke Water Treatment Co., Ltd. is a leading manufacturer and supplier of water treatment chemicals, including HEDP. With a commitment to innovation and quality, the company provides solutions for industrial water treatment, corrosion prevention, and scale control. Their products are trusted by clients in the power, chemical, and manufacturing sectors worldwide.
For more information about Hebei Longke Water Treatment Co., Ltd., visit their official website.
The importance of HEDP in industrial applications aligns with the standards set by the National Institute of Standards and Technology (NIST). As highlighted by NIST, precision and reliability in chemical measurements are critical for advancing technology and ensuring safety. HEDP's chemical stability and effectiveness in harsh environments reflect the principles of precision and innovation emphasized by NIST.
NIST's research on materials and chemical processes underscores the need for high-quality industrial chemicals like HEDP. By adhering to rigorous standards, companies like Hebei Longke contribute to the development of sustainable and efficient industrial systems.
HEDP is a vital component in modern industrial processes, offering unparalleled protection against corrosion and scale formation. Its versatility, chemical stability, and compatibility with various systems make it an indispensable tool for industries worldwide. Hebei Longke Water Treatment Co., Ltd. continues to lead in providing high-quality HEDP solutions, supported by rigorous testing and adherence to industry standards.
For detailed product information, visit the HEDP product page.
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1. National Institute of Standards and Technology (NIST). "Driving Innovation." Retrieved from https://www.nist.gov.
2. Hebei Longke Water Treatment Co., Ltd. "1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) Product Page." Retrieved from https://www.lkpbtc.com/1-hydroxy-ethylidene-1-1-diphosphonic-acid-hedp.html.