HEDP 1-Hydroxyethylidene-1, 1-Diphosphonic acid

Quantity Order:

Origin:

China

Pack. & Delivery:

25kg

1-Hydroxyethylidene-1, 1-Diphosphonic acid ( HEDP) [ 2809-21-4]
Abbreviation: HEDP Molecular weight: 206.02

Specifications:
Appearance Clear, Colorless to pale yellow aqueous solution
Active Content( as HEDP) 50.0 - 60.0 %
Phosphorous acid ( as PO33- ) 2.0% max
Phosphoric acid ( as PO43- ) 0.8% max
pH ( 1% Water Solution) 2.0 max
Density ( 20 ) g/ cm3
1.34 - 1.40
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
Usage:
HEDP is usually used together with polycarboxylic acid, to make up whole-organic-alkali or low-phosphor zinc-based agent of water treatment to be used in all kinds of cyclic cooling water systems different from water quality.
The dose is generally 2~ 10mg/ L while HEDP is used alone. The dosage of 1-10mg/ L is preferred as scale inhibitor, 10-50mg/ L as corrosion inhibitor, and 1000-2000mg/ L as detergent.
Applications:
HEDP( S) is a type of cathodic inhibitor. Compared with inorganic phosphates, it can be compounded with sodium molybdate, silicate, zinc salt and co-polymer mainly as scale corrosion inhibitor in treatment of cyclic cooling water, oil field flash and boiler water. It is mainly used as a Scale and Corrosion Inhibitor. It' s also used as chelating ( Sequestrating) , deflocculating agent in Textile Dyeing, Detergents etc.
Packing and Storage:
Normally In 30kg or 250kg net Plastic Drum, IBC' s can also be used as required. Stored in cool and ventilated room in one year.
Safety Protection:
Acidity, avoid contact with eye and skin, once contacted, flush with water.

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