Hydroxyethylidene Diphosphonic acid (HEDP) CAS 2809-21-4

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Chemical Name :Hydroxyethylidene Diphosphonic acid (HEDP)

CAS: 2809-21-4

Molecular Formula: C2H8O7P2

Molecular Weight:206.03

Item Specifications Results
      Appearance Colorless to light yellow transparent liquid Colorless to light yellow transparent liquid
Active ingredient (based on HEDP)%≥ 60 60.12
Phosphorous acid (calculated as PO₃)%≤ 2 1.6
Phosphoric acid (calculated as PO₄³)%≤ 0.8 0.29
Density (20℃)g/cm³≥ 1.4 1.441
PH value (10g/L aqueous solution)≤ 2 1.63
Iron (calculated as Fe) μg/g ≤15 8.6
Calcium chelation value (calculated as CaCO₃) mg/g ≥500 514.3
Chloride (calculated as Cl)μg/g ≤100 39.8
Conclusion The results conforms with enterprise standards

1. Used as water treatment agent.
2. Phosphorylation reagent for protected serine and pyranose.

250KG/DRUM
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