Scale inhibitor slow-release agent

It can be fully dissolved in water, innocuous and none pollution to environment, has good chemical stability and thermal tolerance.

Category:

Environmental Pollution Treatment Agent

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Consultation

Product Name: Scale inhibitor slow-release agent

Product Name:Ethylene Diamine Tetra (Methylene Phosphonic Acid) (EDTMPA)

CAS Number:1429-50-1

Molecular Formula:C6H12O12N2P4Na8 (as sodium salt, EDTMPS)

Appearance:Yellow to brown transparent liquid

Density:≥ 1.25 g/cm³ (at 20°C)

pH:Alkaline (pH 9.5-10.5 in 1% aqueous solution)

Solubility:Highly soluble in water

Product Description:EDTMPA is a potent chelating agent used primarily in water treatment processes to prevent scale formation and corrosion. The compound is based on an ethylene diamine backbone with four methylene phosphonic acid groups, providing it with high affinity for metal ions.

Application

It is mainly used for scale inhibition and corrosion inhibition of copper tubes of condenser of circulating cooling water in thermal power plants, and can also be applied to circulating cooling water system in chemical, metallurgy, petroleum and other industries.

Properties

EDTMPS is nitrogenous organic polyphosphonic acid, a part of cathodic corrosion inhibitor. Its corrosion inhibition is 3~5 times better than that of inorganic polyphosphate. It can be fully dissolved in water, innocuous and none pollution to environment, has good chemical stability and thermal tolerance. It shows excellent scale inhibition ability under temperature 200℃. It can dissociate into 8 positive-negative ions, thus can chelate with many metal ions to form polymer reticulation complex, to destroy the normal crystallization of calcium scale. EDTMPS shows better antiscale effects to calcium sulfate and barium sulfate.

Specification

Items	Index
Appearance	pale yellow transparent liquid
Active component (EDTMPS), %	28.0min
Phosphorous acid (as PO33^-), %	5.0max
Phosphoric acid (asPO43^- ), %	1.0max
pH (1% water solution)	9.5-10.5
Density (20℃), g/cm3	1.25min
Chloride(Cl^-), %	3.0max