Water Treatment HEDP 2809-21-4

CAS No.: 2809-21-4
Type.: Water Treatment
Appearance: Clear, water-white to pale yellow solution
Molecular Formula： C2H8O7P2
Shelf Life： 2 years
Min Order Quantity: One Container

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Water Treatment HEDP (also named Hydroxyethylidene Diphosphonic Acid, or 1-Hydroxyethylidene-1, 1-diphosphonic acid) is a kind of widely used Water Treatment.

Items of Analysis	Standard	Analysis Result
Appearance	Clear, water-white to pale yellow solution	Clear, water-white to pale yellow solution
Total Active Acid,%	58.0-62.0	60.05%
Phosphorous Acid (as PO33-), %	2.0 Maximum	1.35%
Phosphoric Acid (as PO43-), %	0.8 Maximum	0.68%
Chloride (as Cl-), %	1.0 Maximum	<1.0%
Specific gravity (at 20℃)	1.41-1.46	1.436
pH, (1% solution 25℃)	1.0-2.0	1.75
Ca2+ Sequestration, (as CaCO3 mg/g )	450 Minimum	520mg/g

HEDP/Hydroxyethylidene Diphosphonic Acid is a kind of Water Treatment. Richest Group is a Leading Chemical Supplier/Manufacturer of Water Treatment for 10 years.
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HEDP/Hydroxyethylidene Diphosphonic Acid Application:
HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.

In light woven industry, HEDP is used as detergent for metal and nonmetal.

In dyeing industry, HEDP/Hydroxyethylidene Diphosphonic Acid is used as peroxide stabilizer and dye-fixing agent;

In non-cyanide electroplating, HEDP is used as chelating agent.

The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.