Shandong Kaiteda Chemical Co., Ltd. Was founded in 2011



HEDP(1-Hydroxy Ethylidene-1,1-Diphosphonic Acid)

The specification of HEDP as follow:

- Appearance : Clear, Colorless to pale yellow aqueous solution ;White crystal powder

-Solubility: Readily soluble in water

-Chemical Formula:C2H8O7P2  

CAS: 2809-21-4



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;

皇马电竞appIn non-cyanide electroplating,HEDP is used as chelating agent。 The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent。

Usually,HEDP is used together with polycarboxylic acid.

Package and storage :

皇马电竞appHEDP liquid: 200L plastic drum,IBC(1000L),customers’ requirement.

HEDP solid: 25kg/bag,customers’ requirement.

皇马电竞appStorage for ten months in room shady and dry place。

Clear, Colorless to pale yellow aqueous solution
White crystal powder
Active content (HEDP)%
60.0 min
90.0 min
Active content (HEDP·H2O)%
98.0 min
Phosphorous acid (as PO33-)%
1.0 max
0.8 max
Phosphoric acid  (as PO43- )%
0.6 max
0.5 max
Chloride (as Cl-)%
0.01 max
0.01 max
pH (1% water solution)
2.0 max
2.0 max
Density  (20℃)g/cm3
1.40 min
Fe, mg/L
10.0 max
5.0 max
Colour APHA (Hazen)
10.0 max
Ca sequestration (mg CaCO3/g)
500.0 min

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