HEDP (1-Hydroxy Ethylidene-1,1-Diphosphonic Acid)
CAS NO.: 2809-21-4
HS CODE:2931499090
HEDP is widely used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc..
Product specification:
| Items | Index | |
| Appearance | Clear, colorless to pale yellow aqueous solution. | White Crystal Powder |
| Active Content(HEDP)% | 58.0-62.0 | 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 CI)% | 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. | |
Product specification:
| Items | Index | |
| Appearance | Clear, colorless to pale yellow aqueous solution. | White Crystal Powder |
| Active Content(HEDP)% | 58.0-62.0 | 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 CI)% | 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. | |
