EDTMPA is white crystal powder at room temperature, with melting point 215-217℃, hard to be dissolved in water, the solubility is less that 5% at room temperature, easy dissolved in ammonia. EDTMPA has strong metal ion chelating capacity, whose chelating constant with cuprum ion is larger than that of EDTA.
EDTMPA has high capacity for chelating metal ions. The complex constant with Cu is the largest in all chelating agents including EDTA. The chelating capacity of EDTMPA largely exceed that of EDTA and DTPA, and can replace EDTA for chelating agent at almost any situation.
2、Specification:
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index
Appearance
White crystal powder
Active acid %
95.0min
Total phosphonic acid（as PO43-）%
82.0 min
Dryness weight loss %
2.0 max
Fe ppm
5 max
Cl %
0.1 max
pH（1％ solution）
2.0 max
3、Usage:
EDTMPA can be used as corrosion inhibitor in circulating cool water system and boiler water. such as steel & iron, petrochemcal, power plant and medical industries.
4、Package and Storage:
25kg inner liner polyethylene (PE) bag, outer plastic woven bag, with agreement with export environment requirement, or confirmed by clients. Storage for one year in room shady and dry place.
