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1-Hydroxyethylidene-1,1-
Diphosphonic Acid (HEDP)
Identification
Synonyms:
HEDP. HEDPA, 1-Hydroxyethylidene
diphosphonic Acid; Etidronic acid; 1-Hydroxyethane-1,1-diphosphonic acid
CAS No.: 2809-21-4
Molecular Weight:
206.03
Molecular Formula:
C2H8O7P2
Structural
Formula:
Application
Used as scale inhibitor, deflocculant, sequestrant, water stabilizer in water
treatment, pipeline, detergent under high temperature and high pH value
Specification
Item
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Specification
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Appearance
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pale yellow transparent liquid
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Active
Content
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60±2%
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Phosphorous Acid (as PO3)
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2.0% max
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Iron (as Fe)
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20ppm
max
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pH Value (1% aqueous)
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2.0 max
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Color, APHA
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80 max
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Density( 20°C), g/cm3
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1.44~1.47
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Acetic
Acid
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1.0% max
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Standard Packing
290kgs
net/200L poly drums
Safety
Information
Danger! Corrosive Liquid, Organic, N.O.S. For
more info, please see MSDS
Hazard Class 8
UN 3265
PG III
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