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Jul . 24, 2025 05:01 Back to list

1 Hydroxyethylidene 1 1 Diphosphonic Acid HEDP - Superior Scale & Corrosion Inhibitor



1 Hydroxyethylidene 1 1 Diphosphonic Acid HEDP - Superior Scale & Corrosion Inhibitor

As the global demand for effective scale and corrosion inhibitor chemicals rises, **1 hydroxyethylidene 1 1 diphosphonic acid hedp** has emerged as a front-line additive across industrial water treatment sectors. This article, presented by Hebei Longke Water Treatment Co., Ltd. (www.lkpbtc.com), examines industry trends, technological advancements, application scenarios and essential product information for 1 hydroxyethylidene 1 1 diphosphonic acid hedp.

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Address: No. 3, North of Haohua East Road, North Park, Neiqiu county Industrial Zone, Xingtai City, Hebei Province.

Product Overview – 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP), also known as **1 hydroxyethylidene 1 1 diphosphonic acid hedp**, is a top-tier organophosphorus acid scale and corrosion inhibitor. With CAS No. 2809-21-4, this chemical stands out for its superior chelating capacity, stability against chlorine oxidation, excellent thermal tolerance, and long operational lifespan in water treatment systems.

Further product details can be found at 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP) Product Page.

Main Technical Parameters of 1-Hydroxyethylidene 1 1 Diphosphonic Acid HEDP

Parameter Specification Typical Value Standard / Reference
Appearance Colorless to pale yellow transparent liquid / white powder Pale Transparent Liquid HG/T 3662-2000
Active Acid (%) 58.0 min (liquid), 89-91 (solid) 60.0 (liquid); 90.0 (solid) HG/T 3662-2000
Phosphorous acid (as PO3%,) 2.0 max 1.4 Tested in lab
Phosphoric acid (as PO4%) 0.8 max 0.6 Industry standard
pH (1% aqueous solution) 2.0 max 1.6 ISO 10523
Chloride (as Cl- ; %) 0.02 max 0.01 Tested in lab
Fe, mg/L 10.0 max 7.5 Test Method
Density (20°C), g/cm3 1.30-1.40 1.35 Standard Test

Industry Trend Analysis: 1 Hydroxyethylidene 1 1 Diphosphonic Acid HEDP & Scale and Corrosion Inhibitor Chemicals

With rapid industrialization, the need for high-performance scale and corrosion inhibitor chemicals in industrial recirculating cooling water, boilers, and cooling tower systems is paramount. The push for energy conservation, plant operational efficiency, and asset lifetime extension is fueling global demand for 1 hydroxyethylidene 1 1 diphosphonic acid hedp. According to WaterOnline, the global market for corrosion and scale inhibitors is expected to surpass $8.5 billion by 2028, with organophosphonates like HEDP leading the segment.

Emerging technologies—such as nanocomposite inhibitors and sustainable, low-phosphorus blends—are raising the bar for efficiency and environmental compliance. However, **1 hydroxyehtylidene 1 1 diphosphonic acid hedp** continues to hold its place as a gold-standard scale and corrosion inhibitor, validated by robust field performance and cost-effectiveness.

Key Application Scenarios

  • Industrial Cooling Towers: Provides a long-lasting barrier against calcium carbonate and other scale formations; commonly used as scale and corrosion inhibitor for cooling tower.
  • Circulating Water Systems: Inhibits deposition and corrosion in complex system metallurgy.
  • Reverse Osmosis, RO Systems: Protects sensitive membranes from fouling and scale buildup.
  • Boilers and Heat Exchangers: Controls scaling in both steam and hot water circuits.
  • Oilfield Water Pipelines: Mitigates scale and corrosion risks during enhanced oil recovery.
  • Textile, Paper and Leather: Used as a chelating agent and stabilizer.

Technological Attributes & Comparative Data Visualization

Advantages of Using HEDP in Scale and Corrosion Inhibition

  • Outstanding Scale Inhibition: Prevents formation of calcium carbonate, calcium sulfate, barium sulfate, and other mineral deposits.
  • Superior Corrosion Control: Forms stable chelation complexes with metal ions, reducing metal corrosion rates significantly in recirculating systems.
  • High Temperature & pH Stability: Maintains efficiency in a wide operational window (up to 250°C, pH 1.0–8.0).
  • Excellent Chlorine Resistance: Demonstrates strong stability under oxidative conditions, especially in chlorinated environments.
  • Low Toxicity and Biodegradability: Favored in environmentally compliant water treatment programs.
  • Compatibility: Works synergistically with polycarboxylates, zinc salt, and other common inhibitors.

Why Choose Hebei Longke Water Treatment Co., Ltd. for Your HEDP Supply Needs?

  • Extensive Production Capabilities: Industrial-scale synthesis ensures steady supply and high product purity.
  • Technical Expertise: Decades of R&D experience in scale and corrosion inhibitor chemicals, validated by numerous successful installations worldwide.
  • Global Compliance: Products meet international water treatment standards for quality and safety (Springer Water Science).
  • Responsive Customer Support: Multilingual team available via phone/email for technical support, logistics, and after-sales service.

Frequently Asked Technical Questions on 1 Hydroxyethylidene 1 1 Diphosphonic Acid HEDP

Q1: What is the molecular structure and formula of 1 hydroxyethylidene 1 1 diphosphonic acid HEDP?
A1: The molecular formula is C2H8O7P2; the structure features a central ethylidene group bound to two diphosphonic acid branches and one hydroxy group. This geometry ensures high chelating power and scale inhibition efficiency.

Q2: What are the most common industrial specifications and purity options available?
A2: **1 hydroxyethylidene 1 1 diphosphonic acid hedp** is sold as 60% aqueous solution (liquid) and 90% solid powder. Commercial purity ranges from 58%–91% active acid content, depending on application and formulation needs.

Q3: What is the recommended dosage for HEDP as a scale and corrosion inhibitor for cooling tower systems?
A3: Typical dosage is 2–20 mg/L for cooling water, with higher dosages during initial conditioning or severe scale risk events. Actual amounts should be determined by system water chemistry and monitored by a qualified technician.

Q4: Is HEDP compatible with other water treatment chemicals such as polycarboxylates or chlorine?
A4: Yes, HEDP has excellent compatibility with polycarboxylates, zinc salt, and common oxidizing biocides, including chlorine, due to its high oxidative resistance.

Q5: What are the main regulatory and environmental standards relevant to HEDP?
A5: HEDP meets EPA, REACH, and international water treatment guidelines for scale and corrosion inhibitor chemicals. Its environmental toxicity profile is low, and it is considered safe for use when dosed appropriately.

Q6: What precautionary and installation standards should be followed?
A6: Storage in cool, dry, well-ventilated areas; avoid mixing with concentrated alkaline chemicals. Use corrosion-resistant dosing pumps—plastic, stainless steel (304/316), or Teflon-lined metal recommended.

Q7: What is the shelf life, and how should HEDP be stored?
A7: Shelf life is 12 months (liquid form) and 24 months (solid). Store in original, tightly closed container111s kept away from strong oxidizers and bases.

Key Takeaways, Industry Authority & References

The adoption of 1 hydroxyethylidene 1 1 diphosphonic acid hedp as a preferred scale and corrosion inhibitor underscores its crucial role across industries facing demanding water system challenges. With consistent improvements in thermal stability, chelation efficiency, and environmental impact, it remains a solution of choice for manufacturers and operators committed to efficiency and sustainability.

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