Nanjing Feixiang Chemical Technology Co.,Ltd.

Nanjing Feixiang Chemical Technology Co.,Ltd.

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Products

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

Product Name:
  1-Hydroxy Ethylidene-1,1-Diphosphonic Acid ,HEDP 
No. :
CAS NO.  2809-21-4 
:
:

                                                      1-Hydroxy Ethylidene-1,1-Diphosphonic Acid          HEDP 
                           
1. Product name: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid , Deuest 2010 Abbr:  HEDP,HEDP(A);HEDPA;
   Synonyms:  Etidronic Acid;  1-Hydroxy Ethylidene-1,1-Diphosphonic Acid;
   Hydroxyethylidene-1,1-diphosphonicacid(HEDP); 1-Hydroxyethylidenediphosphonic Acid;
   Hydroxyethylidene Diphosphonic acid(HEDP);1-Hydroxy-1,1-Ethanediyl ester;
   Oxyethylidenediphosphonic Acid(OEDP) Оксиэтилидендифосфоновая кислота(ОЭДФ -кислота )
2.Molecular weight: 206.02
   Molecular Formula: C2H8O7P2 
3.CAS NO.  2809-21-4 
4.Specification:

Item

Index

Appearance

Clear, colorless to pale yellow aqueous solution

White crystale powder
 

Active Content

58.0% - 62.0%

89%

Phosphorous acid (as PO33-)

2.0% max.

2.5max

Phosphoric acid (as PO43-)

0.8% max.

0.7%max

pH (1% water solution)

2.0 max.

2.0max

Chlorides(as Cl-)

100ppm max.

100ppm max

Density (20oC) g/cm3

1.34-1.40

1.447

Iron

10.0ppm max.

35ppm max

Color (APHA)

30 max.

 

5.Usage:
   HEDP is widely used in the in circulating cool water system of electric power, chemical industry, metallurgy, fertilizer, etc. and widely used as a scale and corrosion inhibitor of low-pressure boilers, field waterflood, oil pipeline.In light&textile industry, HEDP is used as detergent for metal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In 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.
6.package and Storage: 
   Packed  250kg/drum or 1300kg/ibc 


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