HEDP most commonly refers to 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid a widely used organophosphonic compound with excellent chelating, scale-inhibiting, and corrosion-inhibiting properties, and it also has other meanings in different fields. The details are as follows:
Basic Information
Chaical Formula: C2H8O7P2
CAS Number: 2809-21-4.
Molecular Weight: 206.02
Physical State: It is usually a Clear, colorless to pale yellow aqueous solution or a white crystalline powder.
Solubility: Highly soluble in water, methanol, and ethanol.
Core Properties and Mechanisms
Chelation: Strongly binds to metal ions like Ca²⁺, Mg²⁺, Fe³⁺, Cu²⁺, forming stable water-soluble complexes to prevent precipitation and scale formation.
Scale Inhibition: Efficiently inhibits calcium carbonate, calcium sulfate, and other mineral scales, even at high taperatures (up to 250°C) and alkaline conditions, with good threshold effects and stability against hydrolysis and oxidation.
Corrosion Inhibition: Forms a protective film on metal surfaces, dissolves oxides, and resists corrosion in systas with chlorine or harsh pH, outperforming many other organophosphates.
HEDP sample
Kairui Chaical is a professional manufacturer of HEDP. The production facilities and equipment are shown in the figure below.
Product Details:https://www.kairuiwater.com/hedp.htm
Contact Us
TEL: +86-632-3671188
E-mail: [email protected]
ADD:Xuecheng Chemical Industrial Park,Zaozhuang City, Shandong Province, China


