China (Mainland)
CAS No. 1429-50-1
Molecular Formula: C6H12O12N2P4Na8 Molecular weight: 612.13
Structural Formula:
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
crystallizationof 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)%
28.0min
Organic phosphonic acid (asPO43- )%
10.0min
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
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 ETDMP: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:
200L plastic drum,IBC(1000L),customers’ requirement. Storage for ten months in shady room and dry place.
Synonyms:
EDTMPS; EDTMP; EDTMPA; Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium; EDTPO;
ETHYLENEDIAMINE TETRA(METHYLENEPHOSPHONIC ACID)