- Water Treatment[10]
- Other Office Furniture[4]
- Beverage Processing Machinery Parts[1]
- Umbrella Stands[5]
- Filters[1]
- Chemical Auxiliary Agent[10]
- Waste Management[2]
- Chemical Reagents[9]
- Amine[1]
- Other Quartz Products[1]
- Other Inorganic Chemicals[2]
- Polymer[5]
- Chemical Process Equipment Parts[10]
- Chloride[10]
- Other Environmental Products[3]
- Organic Salt[1]
- Other Non-Metallic Minerals & Products[10]
- Refractory[2]
- Contact Person : Mr. Young Shawn
- Company Name : Henan Huaquan Water Supply Material General Factory
- Tel : 0086-0371-86081822
- Fax : 0086-0371-86081822
- Address : Henan,GY,Yulin Industry Estate
- Country/Region : China
- Zip : 451252
Powder HEDP
Product description
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,
Usage:
HEDP is 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.. In light woven
industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide
stabilizer and dyefixing agent; In noncyanide electroplating, HEDP is used as chelating agent. The dosage of
1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.
Package and Storage: HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required HEDP
solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients. Storage for ten months in room shady and dry place.
Specification
items | index | |
Appearance | Colorless or light yellow transparent liquid | White crystal powder |
Active content (HEDP)% | 58.0-62.0 | 90.0 min |
Phosphorous acid (as PO33-)% | 2.0 max | 0.5 max |
Phosphoric acid (asPO43- )% | 0.8 max | 0.5 max |
Chloride (as Cl-)% | 0.01 max | 0.01 max |
pH (1 solution) | 2 max | 2 max |
Density (20)g/cm3 | 1.430 - 1.460 | - |
Fe ion ppm | 10 max | 20 max |
Application
1.HEDP as a scale&corrosion inhibitor.2.HEDP as one of the chemicals .3.HEDP used in cooling and boiler water treatment.
Powder HEDP
