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CAS No.:2809-21-4

Molecular Formula: C2H8O7P2

Molecular Weight:206.02

Production:500MT/month

Main specification :50% liquid m:liquid 60 % and powder 90%

60% liquid

Active content (HEDP)% ：60%min

Phosphorous acid (as PO33-)% ：2.0 max

Phosphoric acid? (asPO43- )% ：0.6 max

Chloride (as Cl-)% ：0.01 max

PH (1% solution)：2 max

Density (20oC)g/cm3：1.440min

Fe (ion) ppm：10 max

Sequestrant value(CaCO3)mg/g：500min

Colour APHA (Hazen)：50max

90% powder:

Active content (HEDP)%:90.0 min

Phosphorous acid (as PO33-)%:0.5 max

Phosphoric acid? (asPO43- )%:0.3 max

Chloride (as Cl-)%:0.05 max

PH (1% solution):2 max

Density(20oC)g/cm3:-

Sequestrant value(CaCO3)mg/g:-

Fe (ion) ppm:20 max

Colour APHA (Hazen):

Active content (HEDP.H2O)%:98%min

1)HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals’ surfaces.

2)HEDP shows excellent scale and corrosion inhibition effects under temperature 250ºC.

3)HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt).

4) HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore.

5)HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects。The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals.