60% liquid HEDP For Water Treatment Chemicals (1-Hydroxy Ethylidene-1,1-Diphosphonic Acid)

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US $1,220-1,400 / Metric Tons | 22.5 Metric Ton/Metric Tons (Min. Order)
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Overview
Quick Details
Place of Origin:
Shandong, China (Mainland)
Brand Name:
FENGDA HEDP
Model Number:
60% 1-Hydroxy Ethylidene-11-Diphosphonic Acid
Product name:
1-Hydroxy Ethylidene-11-Diphosphonic Acid
Purity:
60% HEDP
Color:
clear, colorless to pale yellow aqueous solution
Molecular Formular:
C2H8O7P2
Molecular Weight:
206.02
CAS:
2809-21-4
Classification:
Chemical Auxiliary Agent
Type:
Water treatment chemicals
Application:
Scale & Corrosion Inhibitor, water treatment, etc.
Package:
250KG plastic drum, IBC,customers' requirement
Supply Ability
Supply Ability:
5000 Metric Ton/Metric Tons per Month
Packaging & Delivery
Packaging Details
Normally In 250kg net Plastic Drum or 1250kg IBC drum,customer's requirement.
Port
Qingdao, China
Lead Time :
within 10-15 days after order confirmation
Property

HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn etc. metal ions and form stable complex compound. It can dissolve the oxidized materials on these metals’ surfaces. Under 250℃ HEDP shows excellent scale and corrosion inhibition ability. 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 of HEDP is high purity product, suitable for using in winter and freezing districts. it is quite suitable for using as cleaning agent in electronic fields and as additives in daily chemicals.

Specification
ITEMS
INDEX
APPEARANCE
PALE YELLOW TRANSPARENT LIQUID
ACTIVE CONTENT (as HEDP) %
60.0 MIN
PHOSPHOROUS ACID (as PO33-) %
2.0 MAX
PHOSPHORIC ACID (asPO43-) %
1.0 MAX
pH (1%water solution)
2.0 MAX
DENSITY (20ºC) g/cm3
1.40 MIN
IRON ppm
10 MAX
CHLORIDES (as CI-) ppm
100 MAX
Usage

HEDP is widely used in the in circulating cool water system of electric power, chemical industry, metallurgy, fertilizer, etc. and widely used as a scale and corrosion inhibitor of low-pressure boilers, field waterflood, oil pipeline.

In light&textile 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.

Packing

Normally In 250kg net Plastic Drum or 1300kg IBC drum

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