HEDPS
GENERAL
Chemical Name 1- Hydroxy ethylidene (1,1-diphosphonic acid) Salt
Chemical Structure C2H8O7P2 4 Na
Molecular Weight 294
Appearance Colourless to pale yellow viscous liquid
SPECIFICATIONS
PROPERTIES TYPICAL VALUE
Active Content (as HEDP), % 20.0 – 23.0
(as Salt) , % 29 – 32
pH , 1% solution at 25 oC 11 – 12
Density, g/cm3 at 20 oC 1.31
Colour (APHA) 80 max
Iron, ppm 25 max
Chloride, % 1.0 max
APPLICATIONS
Scale inhibitors (especially calcium carbonate); cooling water and boiler treatment; detergents