1-Hydroxyethylidene-1,1-diphosphonic acid HEDP
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
CAS No.:2809-21-4
Molecular formula:C2H8O7P2
Relative molecular weight:206.02
Quality indicators confirm to HG/T 3537-1999
| Item | Indicators | |
| HG/T 3537-1999 | ||
| Appearance | Colorless or Light yellow transparent liquid | White powder solid |
| The active component （ HEDP ）％ ≥ | 50.0 60.0 | 89.0 |
| Phosphorous acid（PO33-）% ≤ | 2.0 2.0 | 0.80 |
| Phosphoric acid（PO43-）% ≤ | 0.8 0.8 | 0.50 |
| Chloride（Cl-）% ≤ | 1.0 1.0 | 0.10 |
| PH （1％ water solvent ） ≤ | 2 2 | 2.0 |
| Density（20℃）g/cm3 ≥ | 1.34 1.40 | —— |
| Iron（ Fe3+ ）content ppm ≤ | 10 10 | 5.0 |
| Active components（HEDP•H2O） % ≥ | —— | 98.0 |
Packaging and storage
HEDP liquid,packed with plastic drum，each drum 30Kg or 250Kg,HEDP solid plastic bags lined with polyethylene bags packaging.The net weight 25kg, can also be used as required. Stored in cool indoor ventilation, moisture, storage period: 10 months.
Protection
HEDP is acidic, you should avoid contact with eyes, skin, once splashed immediately with plenty of water.
