1-Hydroxyethylidene-1,1-Diphosphonic Acid CAS 2809-21-4

1-Hydroxyethylidene-1,1-Diphosphonic Acid CAS 2809-21-4

CAS NO:2809-21-4
EINECS: 220-552-8
Delivery Port: Dalian, China
Payment Terms: L/C, T/T, PayPal, Western Union

Send Inquiry

Product Details




1-Hydroxyethane-1,1-diphosphonic Acid;Etidronic acid;HEDP;HEDPA; Hydroxy Ethylidene-1,1-Diphosphonic Acid;



M. F.






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.

Biophysical-chemical information

Melting Point


Boiling Point

578.8°C at 760 mmHg

Flash Point


Vapour Pressur

8.34E-16mmHg at 25°C

EO Chemicals is one of the leading 1-Hydroxyethylidene-1,1-Diphosphonic Acid suppliers in China, welcome to buy 1-Hydroxyethylidene-1,1-Diphosphonic Acid from our company. If you have demands or any question , pls contact Ida : eo.ida@eoexport.com


Competitive Advantage

1. 1-Hydroxyethylidene-1,1-Diphosphonic Acid - We have clients throughout the world :

●  Professional service and rich experience make customers feel at ease, adequate stock and fast delivery meet their desire.

●  Market feedback and goods feedback will be appreciated, meeting customers' requirement is our responsibility.

●  High quality, competitive price, fast delivery, first-class service gain the trust and praise from the customers.

2. 1-Hydroxyethylidene-1,1-Diphosphonic Acid - Three Principles :

● Safe delivery: Channel diversification,protect the privacy of customers.And just in case, ensure to re-ship.

● Never change: The product will always maintain high purity, will not change,High quality is the culture of our company.

● Good services: As quickly as possible to solve customer problems, so that customers receive the goods safely.

Previous: Amino Trimethylene Phosphonic Acid CAS 6419-19-8 Next: Trichloroisocyanuric Acid CAS 87-90-1

Related Products