Product Name

HEDP.Na4

Chemical name

Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

CAS No.

29329-71-3(x-Na), 3794-83-0(4-Na)

MolecularFormr

C₂H₄O₇P₂Na₄  

MolecularWeight

294

CommonName:

Dequest 2016

Chemical

Structure

SPECIFICATIONS

items

index

Appearance

Clear,Colorless to paleyellowAqueousSolution

White powder

Active component (HEDP)%

22.0-24.0% as acid

56.0 min

Active component (HEDP.Na4)%

32.0-34.0% as salt

79.9 min

Total phosphoric acid (asPO₄^3-) %

52.0-54.0

Fe ppm

20max

35.0 max

Dry weight loss %

15 max

density (20C)g/cm3

1.31min.

--

PH(1%WaterSolutionn)

10.0-12.0

11.0-12.0

Color (APHA)

80max.

Properties :Dequest 2016 is the sodium salt of Dequest 2010, HEDP.Na4 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.

The solid HEDP.Na4 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 250C.

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 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. 

APPLICATIONS: HEDPS(Na-4) is mainly used as a Scale & Corrosion Inhibitor, chelating (Sequestrating), deflocculating agent in Cooling and Boiler water treatment, Textile Dying, Detergents etc.

Package and Storage:

For liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required. For solid: inner liner polyethylene(PE) bag, outer plastic woven bag, or confirmed by clients. Storage for ten months in room shady and dry place.

Note:Also available dry powder form