It is used in detergent, water purification process and cosmetics, and is widely used in water treatment technology.
Multiple Names
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.
CAS No. 2809-21-4
EC No. 220-552-8
MF No. C2H8O7P2
MW No. 201.9987
Assay Item | Standard |
Form | Powder |
Color | White |
Acidity Coefficient (pKa) | 1.35, 2.87, 7.03, 11.3(at 25℃) |
Melting Point | 198~199℃ |
PH | pH (1.7→100, 25℃) : 1.3～1.8 |
Density | 1.45 (60% aq.) |
1. Soluble in water easily.
2. It is widely used in industrial water treatment, household cleaning products and personal care products.
3. Easy to store.
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