Brand:HYHX
MOQ:5
Quantity:20
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Product Specifications- Other Names : 1-Hydroxyethylidene-1,1-Diphosphonic Acid
- Purity (%) : 100%
- Type : Carbon Black
- Usage : Electronics Chemicals, Water TreatmentChemicals, Paper Chemicals, Textile Auxiliary Agents
- Brand Name : HYHX
60% HEDP------Corrosion Inhibitor
Definition:
HEDP is an organophosphoric acid corrosion inhibitor. It canchelate with Fe, Cu, and Zn ions to form stable chelatingcompounds.It can dissolve the oxidized materials on these metals???surfaces. HEDP shows excellent scale and corrosion inhibitioneffects under temperature 250???. HEDP has good chemical stabilityunder high pH value, hard to be hydrolyzed, and hard to bedecomposed under ordinary light and heat conditions. Itsacid/alkali and chlorine oxidation tolerance are better than thatof other organophosphoric acids (salt). HEDP can react with metalions in water system to form hexa-element chelating complex, withcalcium ion in particular. Therefore, HEDP has good antiscale andvisible threshold effects. When built together with other watertreatment chemicals, it shows good synergistic effects.
The solid state of HEDP is crystal powder, suitable for usage inwinter and freezing districts. Because of its high purity, it canbe used as cleaning agent in electronic fields and as additives indaily chemicals.
Specifications:??
| items | ??index |
| Appearance | Whitecrystal powder |
| Active content (HEDP)% | 90.0min |
| Phosphorous acid (asPO33-)% | 0.8 max |
| Phosphoric acid??(asPO43- )% | 0.5 max |
| Chloride (as Cl-) ppm | 100.0max |
| pH (1% solution) | 2.0 max |
| Fe???mg/L | 5.0 max |
Application:
HEDP is used as scale and corrosion inhibition in circulating coolwater system, oil field and low-pressure boilers in fields such aselectric power, chemical industry, metallurgy, fertilizer, etc.. Inlight woven industry, HEDP is used as detergent for metal andnonmetal. In dyeing industry, HEDP is used as peroxide stabilizerand dye-fixing agent; In non-cyanide electroplating, HEDP is usedas chelating agent. The dosage of 1-10mg/L is preferred as scaleinhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L asdetergent. Usually, HEDP is used together with polycarboxylicacid.
Package:
HEDP Soild: 25kg inner liner polyethylene(PE) bag, ?? out withplastic woven bag, or according to the customer''srequirement.
