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HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid)

Synonyms: Dequest 2010, Briquest ADPA-60AW, Unihib 106
Structure:
Physical and chemical properties:

Appearance

Clear, Colorless to pale yellow aqueous solution

Active Content

58.0 - 62.0 %

Phosphorous acid (as PO3 3- )

2.0% max

Phosphoric acid (as PO4 3- )

0.8% max

pH (1% Water Solution)

2.0 max

Density (20°C) g/cm3

1.430 - 1.460

Iron

10ppm max

Chlorides (as CL-)

100 ppm max

Color (APHA)

30 max.

Ca sequestration mg CaCO3/g

480 min

Acetic Acid

1.0% max
Uses: It is mainly used as a Scale & Corrosion Inhibitor, chelating (Sequestrating), deflocculating agent in Cooling and Boiler water treatment, Textile Dying, Detergents etc.

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