1-Hydroxyethylidene-1

HEDP Powder
HEDP Liquid
1-Hydroxyethylidene-1 Chemicals
HEDP For Water Treatment
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  • Product Name: 1-Hydroxyethylidene-1
  • Synonyms: HEDP, 1-diphosphonic acid
  • Appearance: White crystal powder or Liquid
  • CAS NO.: 2809-21-4
  • Molecular Formular: TC2H8O7P2
  • HS Code: 29310000

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
Density  (20℃)g/cm3 1.43-1.47
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.

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