Hedp

Product Name: powder HEDP 90%
Other Names: 1-Hydroxyethylidene-1,1-diphosphonic acid
1.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..
2.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;
3.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.
4.Usually, HEDP is used together with polycarboxylic acid.

Product Name: powder HEDP 90%
Other Names: 1-Hydroxyethylidene-1,1-diphosphonic acid
1.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..
2.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;
3.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.
4.Usually, HEDP is used together with polycarboxylic acid.

HEDP is highly effective organic phosphorus class anti- is filthy corrosion inhibitor. These compounds are widely used as scale inhibitor, deflocculant, sequestrant and water stabilizer in cooling water systems. They have a greater pH value and are even stable under high temperature. Our product portfolio for EDTA comprises of EDTA Pure Acid Disodium Salt, Tetra Sodium (powder), Tetra Sodium (liquid), Trisodium (powder), etc.

HEDP is used as a retardant in concrete, 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. Usually, HEDP is also used together with polycarboxylic acid(superplasticizer),in which it acts as reducing agent.

For price, specification and other details please contact us.

HEDP is highly effective organic phosphorus class anti- is filthy corrosion inhibitor. These compounds are widely used as scale inhibitor, deflocculant, sequestrant and water stabilizer in cooling water systems.

HEDP is an organphosphoric 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¡æ. 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 organ 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.
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.


250kg Plastic Drum, IBC.

Appearance
Water white to pale yellow liquid

Active acid (%)
60.0 min

Phosphorous acid as po33- (%)
2.0 max

Phosphorous acid as po43- (%)
0.8 max

Chloride (as cl, %)
0.5 max

Sequestrant value(caco3)mg/g as product at ph 11-12
500 min

Ph(1% solution)@20ípc
2.0 max

Density at 20ípc, g/cm3
1.440 min

Iron, as fe (ppm):
35.0max

Colour apha (hazen):
80 max

Appearance: colorless or light yellow transparent liquid, white crystal powder. Properties and 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 polycarboxylic acid.

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
CAS No. 2809-21-4 Dequest: 2010
Molecular Formula: C2H8O7P2
Molecular weight: 206.02.

Properties:
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 metalsí» surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250íµ. 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.

Specification:
items index
Appearance Colorless or light yellow transparent liquid White crystal powder
Active contentú¿HEDPú¬úÑ 58.0-62.0 90.0min
Phosphorous acidú¿as PO33-ú¬% 2.0max 0.5max
Phosphoric acid ú¿as PO43 ú¬% 0.8max 0.5max
Chloride (as Cl-)% 0.01max 0.01max
pHú¿1úÑ solutionú¬ 2max 2max
Density ú¿20íµú¬g/cm3 1.40 í¬
Feú¼mg/L 10max 5max
Colour APHA (Hazen) 40max.

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 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.

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


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.