1-Hydroxy Ethylidene-1,1-Diphosphonic Acid as scale and corrosion inhibition HEDP
CAS No. 2809-21-4
Molecular Formula: C2H8O7P2Molecular weight: 206.02
UN NO. 3265
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.
|Appearance||White crystal powder|
|Active content (HEDP)%||90.0min|
|Phosphorous acid (as PO33-)%||0.8 max|
|Phosphoric acid (asPO43- )%||0.5 max|
|Chloride (as Cl-) ppm||100.0max|
|pH (1% solution)||2.0 max|
HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP
is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent;
In non-cyanide electroplating, HEDP is used as chelating agent. Usually, HEDP is used together with polycarboxylic acid.
25kg/bag, and can make adjust according to customers' requirement.