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HEDP•Na4

HEDP•Na4 is an good scale inhibitor for calcium carbonate, HEDP•Na4 can be used in low pressure boiler water system.

Quantity:
  • HEDP•Na4
  • ThFine
  • CAS No. 3794-83-0
  • Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 

(HEDP•Na4)


CAS No.: 29329-71-3 (x-Na), 3794-83-0 (4-Na) 

EINECS No.: 223-267-7

Molecular Formula: C2H4O7P2Na                      Molecular Weight: 294

Structural Formula:

HEDP.NA4.png

Properties:

HEDP•Na4 is the sodium salt of HEDPwhich is an excellent scale inhibitor for calcium carbonate. It is mainly used in low pressure boiler water system, circulating water system, industrial and municipal cleaning water system and swimming pool.

 

The solid HEDP•Na4 is white powder, soluble in water, easily deliquescence, suitable for use in cold and freezing districts. It is a kind of organophorphonic acid scale and corrosion inhibitor, can form stable complex with Fe, Cu and Zn ions, can dissolve the oxides on metal surface. It has good scale and corrosion inhibition effect even under 250℃.

 

HEDP•Na4 is widely used in circulating cooling water system, medium and low pressure boiler, oil field water pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP•Na4 is used as detergent for metal and nonmetal. In dyeing industry, HEDP•Na4 is used as peroxide stabilizer and dye-fixing agent. In non-cyanide electroplating, HEDP•Na4 is used as chelating agent.

 

      Specification:


Items

Index

Appearance

Colorless to yellowish transparent liquid

White powder

Active content (HEDP)%

20.3-21.7

60.0 min

Active content (HEDP•Na4)%

29.0-31.0

85.0 min

Total phosphoric acid (as PO43-)%

18.4-20.4

55.0 min

Fe, mg/L

20.0 max

35.0 max

Moisture%

--

9.0 max

Density (20℃)g/cm3

1.26-1.36

--

PH (1% water solution)

10.0-12.0

11.0-12.0


Package and Storage:

HEDP•Na4 liquid: Normally in 200L HDPE drum, 1000L IBC, or customers’ requirement.

HEDP•Na4 solid: 25kg inner liner PE bag, 1000kg woven bag, or customers’ requirement.

Storage for ten months in shady room and dry place.

Package


Safety Protection:

Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.


Synonyms:

Tetrasodium (1-hydroxyethylidene)bisphosphonate



Salts of Phosphonates ( Antiscalants, Corrosion Inhibitors and Chelating Agents )


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