1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP ) Solid 90%

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1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP ) Solid 90%

HEDP is an organic phosphonate scale and corrosion inhibitor that can form stable complexes with various metal ions such as iron, copper, and zinc. It is capable of dissolving oxides on metal surfaces. It maintains good corrosion and scale inhibition effects even at 250°C and remains stable under high pH conditions. It is not easily hydrolyzed and does not readily decompose under normal light and heat conditions. Compared to other organic phosphonates (salts), HEDP exhibits better acid-base resistance and chlorine oxidation resistance. It can form six-membered ring chelates with metal ions in water, particularly calcium ions, resulting in effective scale inhibition and a pronounced

Model:
90%
Brand:
AQUA CHEM
Code:
29319000
CAS RN:
2809-21-4
EINECS:
220-552-8

Appearance:	White crystalline particles
Active content ( as acid ) /%:	≥90.0%
Phosphorous acid (as PO33- ) %:	≤0.8
Phosphoric acid ( as PO43- )%:	≤0.5
Chloride (as Cl- )ppm:	≤100
PH (1% ):	≤2
Fe ion ppm:	≤5
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Product Application

HEDP solid is a high-purity product suitable for use in severely cold winter regions. It is especially applicable as a cleaner in the electronics industry and as an additive in daily chemical products.

HEDP is widely used in industrial circulating cooling water systems, medium and low-pressure boilers, oilfield water injection, and oil pipelines in the power, chemical, metallurgical, and fertilizer industries for scale and corrosion inhibition. In the light and textile industries, it serves as a cleaner for both metals and non-metals, a stabilizer and fixative for peroxides in dyeing and printing industries, and a complexing agent in cyanide-free electroplating. In the pharmaceutical industry, it functions as a carrier for radioactive elements.

product packages

25kg kraft paper bag