EDTMPS/EDTMP/EDTMPA
Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium
CAS No. 1429-50-1
Molecular Formula:C6H12O12N2P4Na8
Molecularweight: 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°C.
Specification:
Appearance: Yellow to umber clear liquid
Active component (EDTMPS): 30.0min
Organic phosphonic acid (asPO43- ): 10.0%min
Phosphorous acid (as PO33-): 5.0%max
Phosphoric acid (asPO43- ): 1.0%max
pH (1% water solution):9.5-10.5
Density (20°C) g/cm3: 1.25min
Chloride (as Cl-): 3.0%max
Package :Normally In 250kg net Plastic Drum, IBC drum can also be used as required.
Aplication:
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.
