Phosphonates are salts or esters of phosphonic acid.

In the industrial field they are used in:

• water treatment
  
• detergents
  
• desalination
  
• paper bleaching and fabrics
  

They act as descalers, corrosion inhibitors and chelators.

Molecular Formula : C₂H₈O₇P₂

Molecular Weight : 206.027 g/mol

CAS : 2809-21-4   7414-83-7

Synonyms

• Etidronic acid
  
• 1-Hydroxyethylidene-1,1-diphosphonic acid
  
• etidronate