Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS)

: Office Paper Series; Printing & Writing Paper
: Flexible Graphite; Asbestos and Non-asbestos; Metal; PTFE(Teflon); Rubber
: Spiral Wound Gasket; Metal Jacketed Gasket; Graphite Gasket; Teflon (PTFE) Gasket; Compressed Asbestos Gaske; Non-Asbestos Gasket; Camprofile Gasket; Ring Joint Gasket; Flat Metallic Gasket; Die-Formed Graphite Ring; Gland Packing
: Carbon Black N220 (ISAF); Carbon Black N330 (HAF); Carbon Black N550 (FEF); Carbon Black N660 (GPF); Carbon Black N234 (ISAF-HS); Carbon Black N339 (HAF-HS)
: Organophosphine antiscale; Polycarboxylic antiscale; Bactericide and Algicide; RO Chemicals; Chemicals For Boiler; Organophosphoric Salts; Corrosion Inhibitor
: Gasket Machine; Carbon and Graphite Felt; Natural Flake Graphite; Other Materials; Carbon Additve; Expandable Graphite

Products infomation

Water Treatment Agent>> Organophosphine antiscale and corrosion inhibitor >>EDTMPS

Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS)

CAS No. 1429-50-1

Molecular Formula: C₆H₁₂O₁₂N₂P₄Na₈ Molecular weight: 612.13

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	Clear yellow to umber transparent liquid
Active component (EDTMPS)%	30.0min
Organic phosphonic acid (asPO₄^3- )%	10.0min
Phosphorous acid (as PO₃^3-)%	5.0max
Phosphoric acid (asPO₄^3- )%	1.0max
pH (1% water solution)	9.5-10.5
Density (20℃) g/cm³	1.25min
Chloride (as Cl^-)%	3.0max

Usage:

EDTMPS can be used as corrosion inhibitor in circulating cool water system and boiler water. It is a chelating agent in non-cyanogen electroplating industry and a water-softening agent in printing & dyeing industry. When used alone, 2~10mg/L is preferred. When built with HPMA by ratio EDTMP:HPMA=1:3, it can be used for low pressure boiler. It can also be built with BTA, PAAS and zinc salt.

Package and Storage:

Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place.