| Place of Origin: | China |
|---|---|
| Brand Name: | YXCHEM |
| Certification: | ISO9001 |
| Model Number: | HEDP |
| Minimum Order Quantity: | 1mts |
| Price: | Negotiation |
| Packaging Details: | 290kg/Drum |
| Delivery Time: | 30-45days |
| Payment Terms: | D/A, L/C, D/P, T/T, Western Union |
| Supply Ability: | 2000MTS per month |
| Appearance: | Clear, Colorless To Pale Yellow Aqueous Solution | Active Content (HEDP)%: | 60.0 Min |
|---|---|---|---|
| Phosphorous Acid (as PO33-) %%: | 2.0 Max | Phosphoric Acid(as PO43- )%: | 0.8 Max |
| PH (1% Water Solution): | 2.0 Max | ||
| High Light: | etidronic acid,cas 2809-21-4 |
||
Water treatment chemicals 1-diphosphonic acid (HEDP) an organophosphoric acid corrosion inhibitor
Product Name: HEDP
Synonyms: 1-Hydroxyethylidene-1,1-diphosphonic acid; HEDPA
CAS NO: 2809-21-4
Molecular Structure: C2H8O7P2
Hazard Class: 8
Min Order Qty: 1mts
Qty in 20' FCL: 23.2mts
Certificate: ISO9001:2008,
Packing Details: 290kg/Drum
Delivery Time: 30-45 days
Supply Ability: 2000MTS per month
HS Code: 2942000000
| Commodities Name |
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP) |
|
| Appearance | Clear, Colorless to 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 | |
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP 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 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.
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