Product Description
Product Name: 1-Hydroxyethylidene-1,1-diphosphonic acid
Synonyms: HEDP; HEDPA
CAS NO: 2809-21-4
Molecular Structure: C2H8O7P2
Hazard Class:8
| Commodities Name | 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP) | |
| Appearance | Clear, Colorless to a pale yellow aqueous solution | White crystal powder |
| Active content (HEDP)% | 60.0 min | 90.0 min |
| Active content (HEDP·H2O) % | - | 98.0 min |
| Phosphorous acid (as PO33-) % | 2.0 max | 0.8 max |
| Phosphoric acid (as PO43- )% | 0.8 max | 0.5 max |
| Chloride (as Cl-) % | 0.02 max | 0.01 max |
| pH (1% water solution) | 2.0 max | 2.0 max |
| Density (20℃)g/cm3 | 1.40 min | - |
| Fe, mg/L | 20.0 max | 10.0 max |
| Ca sequestration (mg CaCO3/g) | 500.0 min | |
