Structure1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP)
Formula
C2H8O7P2
CAS No. 2809-21-4
EC No. 220-552-8
Synonyms 1-Hydroxyethane-1,1-diphosphonic acid; 1-Hydroxyethylidene-1,1-diphosphonic acid; 1-hydroxyethylidenedi(phosphonic acid); Etidronic Acid; 1-Hydroxyethylidene-1,1-bis-(phosphonic acid); Ethane-1-hydroxy-1,1-diphosphonic acid; 1-Hydroxy-1,1-diphosphonoethane; Oxyethylidenediphosphonic acid

1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP)

1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP) acid with its CAS number 2809-21-4​  is a cost effective scale inhibitor used in various industrial applications such as industrial water treatment and detergents.

1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP) further shows good stability in presence of chlorine as well as corrosion inhibition properties in presence of zinc and other phosphates and can also be used as chelating agent in the textile industry.

Main Applications for HEDP are

  • Cooling water systems / industrial water treatment
  • Industrial detergents
  • Swimming pools
  • Metal surface treatment as a corrosion inhibitor for steel
  • Stabilizer in H2O2 solutions
  • Sequestering agent in textile auxiliaries

 

Packaging & Shelf Life

  • Drums of 250kg net
  • IBCs / totes of 1.250kg net
  • Bulk
  • Others on request

Under proper storage conditions the shelf life is 12 months.

 

Health & Safety

Detailed information on the product can be found in our Material Safety Data Sheet.