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HEDP Las

Category : Catalyst and Auxiliary/Water Treatment Chemicals
CAS NO : 2809-21-4          EC NO : 220-552-8
MF : C2H8O7P2
Main Specifications :
Synonyms : 1-Hydroxyethane-1,1-diphosphonic Acid;Etidronic acid;HEDP;HEDPA; Hydroxy Ethylidene-1,1-Diphosphonic Acid;1-Hydroxy Ethylidene-1,1-Diphosphonic Acid;1-Hydroxyethylidene diphosphonic Acid;1-hydroxy ethylene-1,1-diphosphonic acid;1-HYDROXYETHYLIDENEDI(PHOSPHONIC ACID);disodium (1-hydroxyethane-1,1-diyl)bis[hydrogen(phosphonate)];(1-hydroxyethane-1,1-diyl)bis(phosphonate);Hydroxyethylidenedi(phosphonic acid);Hydroxyethylidine Diphosphonic Acid;
HEDP Las
Package: drum;IBC
Molecular Structure:HEDP Las 2809-21-4
Product description:

Abbreviation: HEDP LAs
Molecular Formula: C2H8O7P2
Molecular Weight: 206
CAS Number: 2809-21-4
Application Notes: Noted for its excellent CaCO3 scale inhibition and chlorine stability.
Recommended Uses: Cooling water treatment, boiler treatment, I & I cleaners, swimming pool stain prevention, metal ion control.
Typical Properties:
Appearance??
Clear colourless to pale tan liquid, free from foreign matter.
Odour
Slight to none
Assay? (%w/w HEDP)
59.5 – 61.0
pH at 20°C (1% w/v)
2.0 max
pH at 20°C (1% v/v)
2.5 max
Sequestrant value (CaCO3) mg/g?
400 min
Iron content (Fe ppm)
30.0 max
Phosphorous acid as H3PO33+ phosphoric acid as H3PO44+ (%w/w)
4.0 max
Orthophosphate as PO4 (%w/w)
0.5 max
Viscosity at 25°C (mm2/sec)
35.0 - 41.0
Specific Gravity at 20/20°C
1.440 - 1.455
Chloride as Cl (%w/w)
1.0 max
Colour (APHA)
30 max
Arsenic content (As ppm)
3.0 max

Abbreviation: HEDP LAs
Molecular Formula: C2H8O7P2
Molecular Weight: 206
CAS Number: 2809-21-4
Application Notes: Noted for its excellent CaCO3 scale inhibition and chlorine stability.
Recommended Uses: Cooling water treatment, boiler treatment, I & I cleaners, swimming pool stain prevention, metal ion control.
Typical Properties:
Appearance??
Clear colourless to pale tan liquid, free from foreign matter.
Odour
Slight to none
Assay? (%w/w HEDP)
59.5 – 61.0
pH at 20°C (1% w/v)
2.0 max
pH at 20°C (1% v/v)
2.5 max
Sequestrant value (CaCO3) mg/g?
400 min
Iron content (Fe ppm)
30.0 max
Phosphorous acid as H3PO33+ phosphoric acid as H3PO44+ (%w/w)
4.0 max
Orthophosphate as PO4 (%w/w)
0.5 max
Viscosity at 25°C (mm2/sec)
35.0 - 41.0
Specific Gravity at 20/20°C
1.440 - 1.455
Chloride as Cl (%w/w)
1.0 max
Colour (APHA)
30 max
Arsenic content (As ppm)
3.0 max
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