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HEDP
HEDP

Minimum Order: 0
Quality/Safety Certification: 0.00


1.Corrosion and scale inhibitors
2.HEDP white powder or colorless or light yellow transparent liquid.
3.Less usage,non-toxic

Properties : Good chemical stability, reagent small, and both corrosion and scale inhibitors effect, non-toxic, pollution-free pollution

HEDP is an organic phosphoric 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°C. 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 organic phosphoric 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.

Specification:

Items

index

Appearance

Colorless or light yellow transparent liquid

Colorless or light yellow transparent liquid

White crystal solid

Active content (HEDP)%

50.0

60.0

90.0 min

Phosphorous acid (as PO33-)%

2.0 max

2.0 max

0.8 max

Phosphoric acid  (asPO43- )%

0.8 max

0.8 max

0.8 max

Chloride (as Cl-)%

1.0 max

1.0 max

0.1 max

pH (1% solution)

2.0 max

2.0 max

2 .0max

Density  (20°C)g/cm3

1.34-1.40

1.40

-

Fe ion ppm

10 max

10 max

5.0 max

Active content (HEDP.H2O)%

--------

--------

98.0max

 

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 dye-fixing agent; In non-cyanide 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 gather carboxylic acid .

Package and Storage:

HEDP liquid: Normally In 250kg or 30kg 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.

Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.

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