nitrogenous organic polyphosphonic acid

Pentasodium Salt of Ethylene Diamine Tetra (Methylene Phosphonic Acid) (EDTMP·Na5)
Keywords:EDTMP·Na5  scale inhibition  circulating water   corrosion inhibitor   chelating agent dye-fixing agent organic polyphosphonic acid scale inhibition scale and corrosion inhibitor water-softening agent winter and freezing districts.
CAS No.
7651-99-2
Dequest:
2046
Molecular Formula:
C6H15O12N2P4Na5
Molecular weight:
546.13
Structural Formula:
Properties and usage
EDTMP·Na5 is a neutral solid product. It is nitrogenousorganic polyphosphonic acid, which is a part ofcathodic corrosion inhibitor.EDTMP·Na5 can be fully dissolved in water, innocuous and none pollution to environment, has good chemical stability and thermal tolerance.EDTMP·Na5 has goodscale inhibition property under temperature 200℃.EDTMP·Na5 can dissociate into 8 positive-negative ions, thus can chelate with more than two metal ions to form more than two polymer reticulation complex, the complex can be quickly dissolved in water to destroy the normal crystallization of calcium scale.EDTMP·Na5 shows betterscale inhibition effects to calcium sulfate and barium sulfate.
EDTMP·Na5 can be used asscale and corrosion inhibitor forcirculating water andboiler water system,chelating agent in non-cyanide electroplating,water-softening agent in dyeing industry, etc.
The solid stateEDTMP·Na5 isslightly easy to deliquescence, convenient in transportation and suitable for usage inwinter and freezing districts.
Specification
Items
Index
Appearance
Amber transparent liquid
White powder
Active content (EDTMP·Na5)%
30.0-32.6
81.4min
Active content (EDTMPA)%
24.0-26.0
65.0min
Chloride (Cl-) %
2.0max
2.0 max
Density （20℃）g/cm3
1.25max
-
Fe，mg/L
20max
20 max
pH（1% water solution）
6.0～8.0
6.0～8.0
Package and Storage
For liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place. For solid: inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients. Storage for one year in room shady and dry place.
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