| 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 |
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| Synonyms : |
1-Hydroxyethane-1,1-diphosphonic Acid;Etidronic acid;HEDP;HEDPA;Hydroxyethylidene-1,1-Diphosphonic Acid;
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); |
