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1-hydroxyethylidene-1 1-diphosphonic acid / HEDP

Product Description

A. Main purpose

HEDP is an organic phosphonic acid scale and corrosion inhibitor. It can form stable complexes with various metal ions such as iron, copper and zinc, and can dissolve oxides on metal surfaces.synergistic effect.

HEDP is widely used in industrial circulating cooling water systems such as electric power, chemical industry, metallurgy, chemical fertilizers, and scale and corrosion inhibition of medium and low pressure boilers, oilfield water injection and oil pipelines. In the textile industry, it can be used as a metal and non-metal cleaning agent.

B. Product picture


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C. Indicators


in line with GB/T 26324-2010 HG/T 3537-2010 Project indicator 50% liquid
Appearance Colorless or light yellow transparent liquid
Active component (in HEDP) /% ≥50.0
Phosphorous acid (based on PO33-) /% ≤2.0
Phosphoric acid (based on PO43-) /% ≤0.8
Chloride (in terms of Cl-) /% ≤0.02
pH (1% aqueous solution) 1.5-2.0
Density (20 ° C) / g · cm -3 ≥ 1.36
Calcium chelation value / mg · g-1 ≥ 450
Iron (in terms of Fe 2+ ) content / mg · L - 1 ≤ 20.0
Active component (based on HEDP·H2O) /% -- -- .


D. Packaging

The powder is packed in 25 kg woven bags or kraft paper bags; the liquid is packed in professional chemical drums of 25 liters, 200 liters, and 1000 liters.

E. Storage

Store at low temperature and avoid light under ventilated and dry conditions

F. Company profile

Jinan Huijinchuan Chemical Co., Ltd. specializes in the supply of chemical raw materials, the main categories are Food additive,Water treatment raw material,Fertilizer raw materials,Metal surface treatment material,Pigments and dyes,Building material additive etc

Contact us if you need more details on HEDP Cas 2809-21-4. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Chelating Agent Corrosion Inhibitor、HEDP 50% 60% 90%. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Water Treatment Agent > Circulating Water Treatment Agent