Sequeston 4000


SEQUESTON 4000 is developed as a mixture of Phosphono-organic compounds for use in
corrosion inhibition. It is stable in chlorine conditions and is totally soluble in water treatment systems,
production water, and so on. It is also used as both corrosion and scale inhibitors in many cooling water
treatment systems and in industrial process water systems

Chemical Name
        Phosphono-organic compounds mixture
APPEARANCE                   Colourless to pale yellow liquid


PROPERTIES                                         TYPICAL VALUE
Total Active Content, %                       45 min
Phosphonic Acid, ( as PO4), %         0.8% max
Phosphorous Acid, ( as PO3), %         0.8% max
pH, ( 1% solution at 25 deg C)             1.0 – 3.0
Specific Gravity, ( at 20 deg C)           1.24 – 1.34
Iron, ( as Fe ), ppm                                 30 max