HEDP 60%---1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid CAS: 2809-21-4

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Posting date : Dec 06, 2014

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Membership

Free Member Scince Dec 06, 2014

FOB Price

990

Min. Order Quantity

Supply Abillity

20000

Port

Qingdao port

Payment Terms

TT, LC, DP

Package

250kg plastic drum or 1250kgs/IBC

Keyword :

HEDP

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Cherry Dong

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Product Detail

Company Info

Quick Detail

Place of Origin

China [CN]

Brand Name

HS-CODE

Package & Delivery Lead Time

Package

250kg plastic drum or 1250kgs/IBC

Delivery Lead Time

Within 10 days after received your order

Detailed Description

CAS: 2809-21-4

Alias: 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid, Dequest 2010, HEDPA

Molecular formula: C2H8O7P2 Relative molecular mass: 206.02

I. Product Property

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, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.

II.

items	index
Appearance	Clear, Colorless to ale yellow aqueous solution
Active content (HEDP)%	58.0-62.0
Phosphorous acid (as PO33-)%	2.0 max
Phosphoric acid (asPO43- )%	0.8 max
Chloride (as Cl-) ppm	100.0 max
pH (1% solution)	2.0 max
Density (20℃)g/cm3	1.43-1.47
Fe,mg/L	10.0 max
Colour APHA (Hazen)	30.0 max
Acetic acid %	0.5 max
Ca sequestration (mg CaCO3/g)	500.0 min

III. Application scope 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.

IV. Package and Storage

It is usually packed in 250kg plastic drum or 1250kgs/IBC, and can be also determined by users. It can be stored for ten months in shady and dry place under room condition.

Ⅳ. Safety Protection:

This product is in acidity. Avoid contact with eye and skin. Rinse with plenty of water shortly after being bodily stained.

Thanks and best regards!

Zouping Dongfang Chemical Industry Co.,Ltd

Tel:0086-15966984900

E: cherry at sddongfang dot com

web:www dot sddongfang dot com

Skype:haiman dot cherry