Oxyethylidenediphosphonic Acid

(OEDP Acid)

Chemical Name: 1-Hydroxyethylidenediphosphonic acid

Synonyms & Trade Names: Hydroxyethane-1,1-diphosphonic acid; 1-Hydroxyethanediphosphonic acid; 1,1,1-Ethanetriol diphosphonate; 1-Hydroxy-1,1-diphosphonoethane; Ethane-1-hydroxy-1,1-diphosphonate; Phosphonic acid, (1-hydroxyethylidene) di-; Phosphonic acid, (1-hydroxyethylidene) bis-; Phosphonic acid, 1-hydroxy-1,1-ethanediyl ester; 1000SL; Dequest 2010 (Solutia); Dequest 2015; Dequest Z 010; EHDP; Etidronic acid; Ferrofos 510; HEDP; Sequion 10H60 (Bozetto); Turpinal SL.

Empirical Formula: C₂H₈O₇P₂

CAS Number: 2809-21-4
H.S. Code: 2931 00 950 0
№ UN: 3077
№ EC: 2205528

Main applications:

• in oil-production as an inhibitor of salts deposits;
  
• in chemical and textile industry as a complexing reagent;
  
• in agriculture to control plants diseases;
  
• as a complexing reagent and an inhibitor of salts deposits in water circulation systems of cooling of industrial facilities and thermal power stations, in systems of hot water supply, in closed systems of heat supply; also as a reagent for salts deposits washing at different industrial facilities.
  
• in pulp and paper industry for cellulose bleaching at the stage of chelation.

Quality Data:

*is determined in the product used in power-engineering.

Storage conditions: Store indoors in dry place in original packing, max and min storage temperature is not limited.

Storage Warranty: 12 months.

Incompatible products: Organic substances and alkalis.

Packing: 16 kg cardboard wound drums with polyethylene liner.

Transport type: Road, railway.

Labelling:

• Xi Symbol
  
• R: 22-41
  
• S: 26-39
• UN Hazard Class: 9
• UN Pack Group: III