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HEDP.Na4
  • HEDP.Na40
HEDP.Na40

HEDP.Na4

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Technical Parameter
CAS No.:

3794-83-0

Molecular Formula:

C2H4O7P2Na4

Other Name:

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

Packaging:

250KG/Drum, 1.25MT/IBC

Items

Specifications

Appearance

Colorless to yellowish transparent liquid

Active content (HEDP)%

20.3-21.7

Active content (HEDP•Na4)%

29.0-31.0

Total phosphoric acid (as PO4 3-) %

18.4-20.4

Fe, mg/L

20.0 max

Moisture, %

--

Density (20℃) g/cm3

1.26-1.36

pH (1% water solution)

10.0-12.0

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

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

It is widely used in circulating cool 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, it is used as detergent for metal and nonmetal. In dyeing industry, it is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, it is used as chelating agent.
Storage
Storage in shady room and dry place.
Shelf Life
1 year
Related Certificates
REACH Registration, ISO-9004 Certificate.
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