ATMP·Na5, Amino Trimethylene Phosphonic Acid Pentasodium


ATMP·Na5 is the pentasodium salt of ATMP. It can inhibit calcium carbonate, particularly in the water treatment system. ATMP·Na5 can be used in circulating cool systems in power plants, oil refinery plants,s and oilfield refill water systems. ATMP·Na5 is a generally low-cost scale inhibitor, it has good corrosion inhibition to zinc salt and phosphate. The chelating ability is good as well. It is equivalent to Dequest® 2006.

CAS No.:


Molecular Formula:


Molecular Weight:


Structure Formula:

ATMP·5Na structure formula


Item Index
Appearance Colorless to light yellow transparent liquid
Active content (ATMP), % 27.8-30.7
Active content (ATMP·Na5), % 38.0-42.0
Total phosphoric acid (PO43-), % 26.6-28.6
Chloride (as Cl), % 1.0 Max.
pH (1% water solution) 10.0-11.0
Density (20℃), g/cm3 1.38-1.48
Fe, mg/L 20 Max.


ATMP·Na5 is used together with other organophosphorus acids, polycarboxylic acid, or salt to form organic alkaline agents. ATMP·Na5 can be used in circulating cool water systems for all water quality.

Packing and Storage:

200L plastic drum,IBC(1000L), customers’ requirement. Storage for ten months in shady room and dry place.


Dequest® 2006.


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