Hydroxy ethylidene diphosphonic acid (HEDP) two

Product overview

Hydroxy ethidene phosphonic acid is two with phosphoric acid for the synthesis of water treatment agent subject and phosphorus trichloride.

The application of information

HEDP as a cathodic inhibitor, compared with inorganic phosphate, in circulating cooling water, boiler water treatment in oilfield water injection can be used with molybdate, zinc salt, copolymer compound, the main corrosion, scale inhibition. At the same time can be used as chelating agent in detergent, electroplating as complexing agent and metal detergent.

Basic properties

Performance index

Index name index

The active component (HEDP) content ≥ 50

Phosphorous acid (PO33-) content ≤ 2

Phosphoric acid (PO43-) content ≤ 0.8

Chloride (Cl-) content ≤ 0.5

Chelating ability of mgCaCO3 ≥ 450

PH (1% aqueous solution) ≤ 2

Density (20 ℃) ≥ 1.34

Storage and transport

This product is packed in plastic drum, net weight 25 kg. Stored in the indoor ventilation cool place, storage period of ten months.

Matters needing attention

In the management, storage or use HEDP, please refer to the material safety performance scale (MSDS) for more information.