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CAS 3794-83-0, HEDP tetrasodium salt HEDP.Na4, C2H8Na4O7P2
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CAS No.:
3794-83-0 -
Molecular Formula:
C2H8Na4O7P2 -
Quality Standard:
99.5%min. -
Packing:
200kg/fiber drum 25kg/bag -
Mininmum Order:
25kg -
Price Update:
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Market:
*If you want to download the TDS and MSDS(SDS) , please click here to view or download online.
Product Name: (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
CAS: 3794-83-0
Synonyms: HEDP tetrasodium salt HEDP.Na4
Molecular Formula: C2H8Na4O7P2
Molecular Weight: 297.985
Synonyms: Na4HEDP;Sodium HEDP;tetrasodiumetidronate;Hydroxyethylene Diphosphonic Acid Tetrasodium Salt
HEDP-Na4 CAS 3794-83-0 is an organophosphoric acid corrosion inhibitor. HEDP-Na4 CAS 3794-83-0 has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
The solid state of HEDP-Na4 CAS 3794-83-0 is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals.
Specification
| Appearance | Colorless transparent liquid | White powder |
| Active content (HEDP)% | 20.3-21.7 | 60.0 min |
| Active content (HEDP•Na4)% | 29.0-31.0 | 85.0 min |
| Total phosphoric acid (as PO43-) % | 18.4-20.4 | 55.0 min |
| Fe, mg/L | 20.0 max | 35.0 max |
| Moisture,% | – | 9.0 max |
| Density (20ºC)g/cm3 | 1.26-1.36 | – |
| PH (1% water solution) | 10.0-12.0 | 11.0-12.0 |
Application
HEDP Na4 is the sodium salt of HEDP, HEDP Na4 is an good scale inhibitor for calcium carbonate, it can be used in low pressure boiler water system, circulating water system, industrial and municipal cleaning water system and swimming pool.
The solid HEDP Na4 is white powder, soluble in water, easily deliquescence, suitable for use in winter and freezing districts. It is a kind of organophorphonic acid scale and corrosion inhibitor, can form stable complex with Fe, Cu and Zn ions, it can dissolve the oxides on metal surface, it has good scale and corrosion inhibition effect under 250ºC.
HEDP Na4 is widely used in circulating cool water system, medium and low pressure boiler, oil field water pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP Na4 is used as detergent for metal and nonmetal. In dyeing industry, HEDP Na4 is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP Na4 is used as chelating agent.
Packaging
Liquid: 200L plastic drum, IBC(1000L),customers’ requirement.
Solid: 25kg/bag, customers’ requirement.
Storage
(1) Stored in a cool and dry well-closed container and in ventilated area.
(2) kept away from moisture and strong light or high temperature.
(3) Two years under well storage situation and stored away from direct sun light.
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