EDTMP·Na5 is a neutral solid product. It is nitrogenous organic polyphosphoric acid, part of a cathodic corrosion inhibitor. EDTMP·Na5 can be fully dissolved in water, is innocuous, and causes no pollution to the environment has good chemical stability and thermal tolerance. In addition, pentasodium salt of ethylene diamine tetramethylene phosphonic acid has good scale inhibition properties under temperatures of 200℃.
EDTMP·Na5 can dissociate into eight positive-negative ions and thus can chelate with more than two metal ions to form more than two polymer reticulation complexes. In addition, the complex can be quickly dissolved in water to destroy the normal crystallization of the calcium scale. As a result, EDTMP·Na5 shows better scale inhibition effects on calcium sulfate and barium sulfate.
Pentasodium salt of ethylene diamine tetramethylene phosphonic acid can be used as a scale and corrosion inhibitor for circulating water and boiler water system, a chelating agent in non-cyanide electroplating, a water-softening agent in the dyeing industry, etc.
The solid-state EDTMP·Na5 is slightly easy to deliquescence, convenient in transportation, and suitable for usage in winter and freezing districts.
|Appearance||Amber transparent liquid||White powder|
|Active content (EDTMP·Na5), %||30.0-32.5||81.4 Min.|
|Active content (EDTMPA), %||24.0-26.0||65.0 Min.|
|Chloride (Cl–), %||2.0 Max.||2.0 Max.|
|pH||6.0-8.0 (as it)||6.0-8.0 (1% water solution)|
|Density (20°C), g/cm3||1.25 Min.||—|
|Fe, mg/L||20 Max.||20 Max.|
Liquid: 200L plastic drum, IBC (1000L). Or as customers’ requirements. Storage for ten months in a shady room and dry place.
Solid: 25 kg/bag, customers’ requirement. Storage for one year in a shady room and dry place.