Tetrasodium etidronate (HEDP 4na) CAS 3794-83-0

Tetrasodium etidronate , Promotion Season Now in Store and Free Sample for Testing with Factory Price

Chemical Name: Tetrasodium etidronate
CAS No.: 3794-83-0
Molecular Formula: C2H9NaO7P2
Molecular weight: 230.02
Sample: Available

Quality Control of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt

Chemical Structure
Tetrasodium etidronate CAS#3794-83-0
Packing of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt

Basic Info of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt

Chemical Name

(1-Hydroxyethylidene)Bis-Phosphonic Acid Tetrasodium Salt





Molecular Formula


Molecular Weight







Safety Info



Safety Statements


Risk Statements


Hazard Codes



Appearance & Physical State

Brown viscous liquid

Boiling Point

578.8ºC at 760mmHg

Melting Point


Flash Point


Numbering system
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What is (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt?

  • With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt which has developed particularly rapidly in recent years. Do you know about (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt?
  • The official answer: Tetrasodium hydroxyethylene-diphosphate, HEDP-Na4 is the sodium salt of HEDP, which is an excellent inhibitor of the calcium carbonate scale. HEDP-Na4 is mainly used for low-pressure boiler water treatment, circulating water treatment, industrial municipal clean water, and metal corrosion inhibition for swimming pool sterilization.

What’s the application of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt?

  • Tetrasodium hydroxyethylidene diphosphonate is an organic compound that can complex with many kinds of metal ions; it is used as a scale inhibitor in cooling water and boiler water treatment; it has a good heat resistance and still has good effect at 200℃.
  • It can also be used as a corrosion inhibitor and additive for non-cyanide plating. Can be complexed with a variety of metal ions. Used as a scale inhibitor in cooling water and boiler water treatment. Good heat resistance. 200℃ still has a good effect.
  • HEDP-Na4 is the sodium salt of HEDP, which is an excellent inhibitor of calcium carbonate scale, HEDP-Na4 is mainly used in low-pressure boiler water treatment, circulating water treatment, industrial municipal clean water, swimming pool sterilization of metal corrosion inhibition.
  • HEDP-Na4 is a white powder solid, easily soluble in water, non-hygroscopic, easy to transport, suitable Chemicalbook for use under severe cold conditions.
  • HEDP-Na4 belongs to the organophosphorus acid salt type scale and corrosion inhibitors can form stable complexes with iron, copper, zinc and other metal ions that can dissolve the oxides on the metal surface. HEDP-Na4 is widely used in electric power, chemical industry, metallurgy, chemical… It can be used as the raw material of pesticide intermediates and organic synthesis raw material.


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