Prix FOB
Obtenir le dernier prix200 ~ 350 USD / Metric Ton
|1 Metric Ton Minimum Order
Pays:
China
N ° de modèle:
-
Prix FOB:
200 ~ 350 USD / Metric Ton Obtenir le dernier prix
Localité:
Weifang,China
Prix de commande minimale:
200 per Metric Ton
Commande minimale:
1 Metric Ton
Packaging Detail:
HEDP solid: 25kg/bag, customers� requirement
Heure de livraison:
3-5 working days
Capacité de Fournir:
3000 Metric Ton per Month
Payment Type:
T/T, L/C, Western Union, Other
Groupe de produits :
Personne àcontacter Matthew
Weifang, Shandong
1-Hydroxy
Ethylidene-1,1-Diphosphonic
Acid 
(HEDP)
CAS No.
 2809-21-4
Molecular
Formula:
  C2H8O7P2                Molecular
weight: 206.02
Structural
Formula:
Â
Properties:
HEDPÂ 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.HEDPshows
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).HEDPÂ can
react with metal ions in water system to form hexa-element
chelating complex, with calcium ion in particular.
Therefore,HEDPÂ has
good antiscale and visible threshold effects. When built together
with other water treatment chemicals, it shows good synergistic
effects.
The solid state
ofHEDPÂ 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:
| Items | Index | |
| 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-)% | 1.0 max | 0.8 max |
| Phosphoric acid  (as PO43- )% | 0.6 max | 0.5 max |
| Chloride (as Cl-)% | 0.01 max | 0.01 max |
| pH (1% water solution) | 2.0 max | 2.0 max |
| Density  (20℃)g/cm3 | 1.40 min | - |
| Fe, mg/L | 10.0 max | 5.0 max |
| Colour APHA (Hazen) | 10.0 max | - |
| Ca sequestration (mg CaCO3/g) | 500.0 min | Â |
| Pays: | China |
| N ° de modèle: | - |
| Prix FOB: | 200 ~ 350 / Metric Ton Obtenir le dernier prix |
| Localité: | Weifang,China |
| Prix de commande minimale: | 200 per Metric Ton |
| Commande minimale: | 1 Metric Ton |
| Packaging Detail: | HEDP solid: 25kg/bag, customers� requirement |
| Heure de livraison: | 3-5 working days |
| Capacité de Fournir: | 3000 Metric Ton per Month |
| Payment Type: | T/T, L/C, Western Union, Other |
| Groupe de produits : | Phosphonates Antiscalants |
