HEDP·Kx, Hydroxy Ethylidene Diphosphonic Potassium


HEDP·Kx is the potassium salt of hydroxy ethylidene diphosphonic acid. It is also the equivalent of Dequest®2014. HEDP·Kx has a better dissolution ability than that of sodium salt under neutral conditions. HEDP·Kx is a good scale inhibitor for calcium carbonate.

CAS No. :


Molecular Formula:


Molecular Weight:


Structure Formula:

HEDP·Kx structure formula


Item Index
Appearance Colorless to yellowish transparent liquid
Active content (HEDP), % 26.0-30.0
Total phosphoric acid (as PO43-), % 24.7-26.7
pH (1% water solution) 6.0-8.0
Density (20℃), g/cm3 1.30-1.40
Fe, mg/L 20.0 Max.


HEDP·Kx can be used in metal corrosion inhibitor, antifouling agent of swimming pool, metal cleaning, volume cleaning, iron dust controlling, metal pretreatment, low-pressure boiler water treatment and circulating water treatment, etc.

Packing and Storage:

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


(1-hydroxyethylidene)bisphosphonic acid potassium salt, Dequest®2014, Potassium hydroxyethyl diphosphonate.


If you want to get the latest HEDP·Kx price and download HEDP·Kx SDS/MSDS, contact us.