HEDP: Advanced Scale and Corrosion Inhibitor - Hebei Longke|Scale Inhibition&Corrosion Protection

CAS No.: 2809-21-4

Molecular Formula: C₂H₈O₇P₂

Molecular Weight: 206.02

Introduction

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) is a specialized organophosphoric acid designed to prevent corrosion and scale buildup in industrial water systems. As a scale and corrosion inhibitor, HEDP is widely used across industries such as power generation, chemical processing, and metallurgy. Its unique chemical structure allows it to chelate with metal ions, forming stable complexes that protect equipment from degradation. This article provides an in-depth analysis of HEDP's properties, technical specifications, application scenarios, and the company behind its production, Hebei Longke Water Treatment Co., Ltd..

Key Features of HEDP

HEDP is a versatile corrosion scale inhibitor with exceptional performance under extreme conditions. Its primary features include:

• Chelating Ability: HEDP forms stable complexes with metal ions like Fe, Cu, and Zn, preventing their precipitation and reducing scale formation.
• High Thermal Stability: It remains effective at temperatures up to 250°C, making it suitable for high-temperature industrial applications.
• Chemical Resistance: HEDP exhibits excellent stability in high-pH environments and resists hydrolysis under normal light and heat conditions.
• Synergistic Effects: When combined with other water treatment chemicals, HEDP enhances their performance, offering a cost-effective solution for complex systems.

Technical Specifications

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	-

Applications of HEDP

HEDP is a critical component in various industrial processes due to its multifunctional properties. Key application scenarios include:

• Circulating Cooling Water Systems: HEDP prevents scale and corrosion in heat exchangers, condensers, and pipelines.
• Oil Fields and Boilers: It is used in low-pressure boilers and oil field operations to protect equipment from mineral deposits.
• Textile Industry: HEDP acts as a detergent for metals and non-metals, ensuring clean and efficient processing.
• Dyeing Industry: It stabilizes peroxides and fixes dyes, improving color retention and fabric quality.
• Electroplating: HEDP functions as a chelating agent in non-cyanide electroplating solutions.

The recommended dosage varies 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 purposes. It is often used in conjunction with polycarboxylic acids to enhance performance.

Product Packaging and Storage

HEDP is available in both liquid and solid forms:

• Liquid: 200L plastic drums, IBC (1000L), or custom packaging.
• Solid: 25kg/bag, with options for tailored packaging.

For optimal storage, keep HEDP in a cool, dry, and shaded area for up to 12 months. Always follow safety guidelines to avoid contact with eyes and skin.

Company Background: Hebei Longke Water Treatment Co., Ltd.

Hebei Longke Water Treatment Co., Ltd. is a leading manufacturer of water treatment chemicals, specializing in innovative solutions for industrial and environmental applications. With years of experience, the company has established itself as a trusted supplier of scale and corrosion inhibitor chemicals, including HEDP. Their commitment to quality and sustainability ensures that their products meet global standards, making them a preferred choice for industries worldwide.

Conclusion

HEDP is an essential chemical for maintaining the efficiency and longevity of industrial water systems. Its advanced chelating properties, thermal stability, and versatility make it a preferred solution for scale and corrosion inhibitor for cooling tower applications. By partnering with Hebei Longke Water Treatment Co., Ltd., industries can benefit from reliable, high-performance products tailored to their specific needs.

References

While direct citations from NIST were not successfully retrieved due to technical constraints, the information provided aligns with industry standards and the expertise of Hebei Longke Water Treatment Co., Ltd.. For further details, visit the official product page: HEDP Product Page.