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1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) HEDP 90% powder HEDP 60% liquid

Product Name	1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) HEDP 90% powder HEDP 60% liquid
CAS No.	2809-21-4
Appearance	Liquid/Powder
Purity	≥99%, ≥99.9%, ≥95%, Industrial Grade, Technical Grade (Other purities are also available)
Ingredient	C2H8O7P2
APS	1-5 µM, 10-53 µM, Nano size (Can be customized), Ask for other available size range
Product Code	NCZ-NRQ-299/26

Product Description

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)

CAS No. 2809-21-4

Molecular Formula: C₂H₈O₇P₂

Molecular weight: 206.02

Grade: 60% liquid; 90% powder

Performance

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. 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.

Application

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.

Packing

1 Kg, 2 Kg, 5 Kg, 10 Kg, 25 Kg (ask for the customization)

Specification

Items	Index
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 PO₃^3-)%	2.0 max	0.8 max
Phosphoric acid (as PO₄^3- )%	0.8 max	0.5 max
Chloride (as Cl^–)%	0.02 max	0.01 max
pH (1% water solution)	2.0 max	2.0 max
Density (20℃)g/cm³	1.40 min	–
Fe, mg/L	20.0 max	10.0 max
Ca sequestration (mg CaCO₃/g)	500.0 min	–

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) HEDP 90% powder HEDP 60% liquid Properties /Description

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) HEDP 90% powder HEDP 60% liquid is generally immediately available in most volumes. Nanochemazone produces many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural, and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research, and safety (MSDS) information are available, as is a Reference Calculator for converting relevant units of measurement.

Related Information:

Storage Conditions:

Airtight sealed, avoid light, and keep dry at room temperature.

Please get in touch with us for customization and price inquiry

Email: contact@nanochemazone.com

Note: We supply different size ranges of Nano and micron as per the client’s requirements and accept customization in various parameters.

Description

Note: For pricing & ordering information, please get in touch with us at sales@nanochemazone.com
Please contact us for quotes on Larger Quantities and customization. E-mail: contact@nanochemazone.com

Customization:

If you are planning to order large quantities for your industrial and academic needs, please note that customization of parameters (such as size, length, purity, functionalities, etc.) is available upon request.

NOTE:

Images, pictures, colors, particle sizes, purity, packing, descriptions, and specifications for the real and actual goods may differ. These are only used on the website for the purposes of reference, advertising, and portrayal. Please contact us via email at sales@nanochemazone.com or by phone at (+1 780 612 4177) if you have any questions.

Important Notes

Research Use Only: Nanochemazone materials are intended strictly for research and development purposes in laboratory and industrial settings.
No Refunds or Exchanges: All sales are final. Nanochemazone does not permit exchanges or offer refunds under any circumstances.
Customs & Import Responsibilities: Customs clearance, duties, taxes, and tariffs are the sole responsibility of the consignee/importer. Nanochemazone is not liable for delays, rejections, or any additional costs incurred during the customs process, and such issues will not justify order cancellations or refunds.
Order Cancellations: Once an order is placed, it cannot be cancelled. No refunds will be issued for cancelled or undelivered orders.
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Terms & Conditions: All orders and communications are subject to Nanochemazone’s standard Terms & Conditions.