1-Hydroxyethylidene-1(HEDP), the white crystal powder or colorless or light yellow transparent liquid, is 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. By the way, if you are looking for high quality HEDP chemicals for water treatment, then Fengbai company is your best choice.
|Appearance||Clear, Colorless to pale yellow aqueous solution||White crystal powder|
|Active content (HEDP)%||58.0-62.0||90.0 min|
|Active content (HEDP·H2O)%||–||98.0 min|
|Phosphorous acid (as POR3RP3P)%||1.0 max||0.5max|
|Phosphoric acid (as POR4RP3-P )%||0.6 max||0.5 max|
|Chloride (as Cl-) ppm||100.0 max||100.0max|
|pH (1% solution)||2.0 max||2.0 max|
|Fe，ppm||10.0 max||5.0 max|
|Colour APHA (Hazen)||30.0 max||–|
|Ca sequestration (mg CaCO3/g)||500.0 min||–|
Application of HEDP Chemicals
1. As scale and corrosion inhibitor, HEDP is widely used in low-pressure boilers, oil field pipeline and industrial circulating cooling water system in power plant, metallurgy, fertilizer and chemical industry.
2. In light woven industry, it is used as detergent for metal and nonmetal.
3. In dyeing industry, it can be used as peroxide stabilizer and dye-fixing agent.
4. In non-cyanide electroplating, HEDP is used as chelating agent.