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1-Hydroxyethylidene-1,1-diphosphonic acid sodium salt

1-Hydroxyethylidene-1,1-diphosphonic acid sodium salt structure

1-Hydroxyethylidene-1,1-diphosphonic acid sodium salt 

structure
  • CAS No:

    29329-71-3

  • Formula:

    C2H8O7P2.xNa

  • Chemical Name:

    1-Hydroxyethylidene-1,1-diphosphonic acid sodium salt

  • Synonyms:

    Phosphonic acid,P,P′-(1-hydroxyethylidene)bis-,sodium salt (1:?);Phosphonic acid,(1-hydroxyethylidene)di-,sodium salt;Phosphonic acid,(1-hydroxyethylidene)bis-,sodium salt;1-Hydroxyethylidene-1,1-diphosphonic acid sodium salt;Sodium 1-hydroxyethane-1,1-diphosphonate;Hydroxyethane-1,1-diphosphonic acid sodium salt;1-Hydroxyethane-1,1-diphosphonic acid sodium salt;1-Hydroxyethylidenediphosphonic acid sodium salt;Briquest ADPA 60SH;Cublen K 8514GR;HEDP sodium salt;1338481-54-1

  • Categories:

    Organic Chemistry  >  Phosphines

1-Hydroxyethylidene-1,1-diphosphonic acid sodium salt Basic Attributes

293.96

227.95600

249-559-4

Characteristics

157.74000

-0.55400

Liquid

578.8ºC at 760 mmHg

303.8ºC

8.34E-16mmHg at 25°C

1-Hydroxyethylidene-1,1-diphosphonic acid sodium salt Use and Manufacturing

HEDP•Na is an organic phosphonic acid scale and corrosion inhibitor. It can form stable complexes with various metal ions such as iron, copper, and zinc, and can dissolve oxides on the metal surface. It can still play a good role in corrosion and scale inhibition at 250 ℃, it is still stable at high pH, ​​not easy to hydrolyze, and it is not easy to decompose under general light and heat conditions. It has better acid and alkali resistance and chlorine oxidation resistance than other organic phosphonic acids (salts). It can form a six-ring chelate with metal ions in water, especially calcium ions, so it has good scale inhibition effect and obvious solubility limit effect. When used in combination with other water treatment agents, it shows an ideal synergistic effect . HEDP•Na is the most suitable scale inhibitor and detergent for acid formulations. HEDP•Na is hydroxyethylidene diphosphonic acid

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