1- Hydroxyethylidene-1,1-Diphosphonic acid
HEDP
| SPECIFICATION | ||
| Specification | ||
| Appearance | Colorless or light yellow transparent liquid | |
| Active content (HEDP)% | 60min | |
| Phosphorous acid (as PO33-)% | 2.0 max | |
| Phosphoric acid (asPO43- )% | 0.8 max | |
| Chloride (as Cl-)% | 0.5 max | |
| pH (1％ solution) | 2 max | |
| Density (20℃)g/cm3 | 1.430 - 1.460 | |
| Fe ion ppm | 10 max | |