HEDP Na4
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HEDP Na4

HEDP Na4 is the sodium salt of HEDP,is a good scale inhibitor for calcium carbonate,it can be used in low-pressure boiler water systems, circulating water systems, industrial, and municipal cleaning water system and swimming pool.

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Product Description

Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP Na4)


CAS NO.
3794-83-0 (4-Na),
Dequest
2016
29329-71-3 (x-Na)   

Dequest
 2016DG
Synonyms:
Tetrasodium etidronate
Molecular Formula
C2H4O7P2Na4     
Molecular weight:
294
Structural Formula:


Properties and Use

HEDP Na4 is the sodium salt of HEDP,is a good scale inhibitor for calcium carbonate,it can be used in low-pressure boiler water systems, circulating water systems, industrial, and municipal cleaning water system and swimming pool.

The solid HEDP Na4 is white powder,soluble in water,easily deliquescence,Convenient Transport,sui table for use in winter and freezing districts. HEDP Na4 belongs to the Organic phosphate salt acid scale. The corrosion inhibitor,can form a stable complex with Fe, Cu, and Zn ions. It can dissolve the oxides on the metal surface. It has a good scale and corrosion inhibition effect under 250℃.


Specification:

Items

Index

Appearance

White powder

Colorless to yellowish transparent liquid

Active content (HEDP)%       

≥56.0

20.3-21.7

Active content (HEDP Na4)% 

≥79.9

29.0-31.0

Fe3+   μg/g  ≤

35.0

20

Moisture,%  ≤

15

--

Density (20℃)g/cm3            

--

1.26-1.36

PH (1% water solution)

11.0-12.0(1%aqueous solution)

10.0-12.0(stoste)


Application scope and method of use:

HEDP Na4 is widely used in circulating cool water system, medium, and low-pressure boiler, oil field water pipelines as scale and corrosion inhibitor in electric power, chemical industry, metallurgy, fertilizer, etc. In the light woven industry, HEDP Na4 is used as detergent for metal and nonmetal. In the dyeing industry, HEDP Na4 is used as a peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP Na4 is used as a chela acting agent. Daily chemicals additive。


Package and Storage:

Liquid: plastic drum,30kg or 250kg, Solid: 25kg/bag,customers’ requirement. Storage for ten months in a shady room and dry place


Safety Protection:

HEDP Na4 Weak acidity, Avoid contact with eye and skin; once contacted, flush with water.




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