CasNo.2809-21-4,HEDP 90% 60% CAS: 2809-21-4,(2809-21-4) Suppliers

1 Liter	Negotiable

Min.Order :1 Liter
Purity: 60%
Payment Terms : L/C,T/T,,MoneyGram

Keywords

HEDP HEDP 60% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

Quick Details

Appearance:Clear, Colorless to pale yellow aqueous solution
Application:Water treatment products
PackAge:250kgs Plastic drum for 60% and 25kgs bag for 90%
ProductionCapacity:500|Metric Ton|Month
Storage:Cool, dry, shading, and sealed storage.
Transportation:Sea, air or as client requirements

Superiority:

Elementary Chemical Co., Limited is specialized in China chemical raw material's sourcing, quality control and exporting service.

We keep track of market tendency and policy changes in relevant chemical industries,we aim to offer the most economic and reliable solution for global clients to seek the development together with our customers.

Elementary's main products is preservative biocides, water treatment chemicals,daily care chemicals, agrochemical raw materials etc.
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Details:

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

Properties:
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	Specification(liquid)	Specification(power)
Appearance	Clear, Colorless to pale yellow aqueous solution	White crystal powder
Active content (HEDP)%	58.0-62.0	90.0 min
Active content (HEDP·H2O)%	-	98.0 min
Phosphorous acid (as PO33-)%	1.0 max	0.8 max
Phosphoric acid (asPO43- )%	0.6 max	0.5 max
Chloride (as Cl-) ppm	100.0 max	50.0max
pH (1% solution)	2.0 max	2.0 max
Density (20℃)g/cm3	1.43-1.47	-
Fe, mg/L	10.0 max	5.0 max
Colour APHA (Hazen)	30.0 max	-
Acetic acid %	0.5 max
Ca sequestration (mg CaCO3/g)	500.0 min

Application & 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.

Package & Storage:
ATMP liquid: Normally In 30kg or 250kg net Plastic Drum;ATMP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients request.Storage for ten months in room shady and dry place.