Success Cases

hydroxyethylenediphosphonic Acid

Categories : Additive

CASE No : 2809-21-4

Product Description

hydroxyethylenediphosphonic Acid HEDP CAS No 2809-21-4

HEDP is an organophosphoric acid corrosion inhibitor. It can dissolve the oxidized materials on these metals’ surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250℃. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals， it shows good synergistic effects. The solid state ofHEDPis 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.

Items	Index
Appearance	Clear	White crystal powder
Active content (HEDP)%	58.0-62.0	90.0 min
Active content (HEDP·H2O)%	-	98.0 min
as PO3%	1.0 max	0.8 max
asPO4%	0.6 max	0.5 max
Chloride (as Cl) ppm	100.0 max	50.0max
pH (1% solution)	2.0 max	2.0 max
Density (20℃)g/cm	1.43-1.47	-
Fe，mg/L	10.0 max	5.0 max
Colour APHA (Hazen)	30.0 max	-
Acetic acid %	0.5 max	-
Ca sequestration	500.0 min	-
Sample	Available
Storage	Cool Dry Place