CAS No. 1429-50-1
Molecular Formula:
C6H12O12N2P4Na8
Molecular weight: 612.13
Structural Formula:
Properties:
Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium
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.
Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium shows better antiscale effects to calcium sulfate
and barium sulfate.
Specification:
| Items |
Index |
| Appearance |
Yellow to umber transparent liquid |
| Active component
(as EDTMPS)%
|
30.0 min |
| Organic phosphonic
acid (as PO43-
)% |
10.0 min |
| Phosphorous acid (as
PO33-)% |
3.0 max |
| Phosphoric acid
(as PO43-
)% |
1.0 max |
| pH (1% water
solution) |
9.5-10.5 |
| Density (20℃) g/cm3 |
1.25 min |
| Chloride (Cl-) % |
2.0 max |
Usage:
Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium
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:
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)
