CAS No.  67953-76-8
Molecular Formula: C₂H₆O₇P₂K₂
Structural Formula:
 
Properties:
HEDP•K2 is the potassium salt of HEDP, HEDP•K2 has better dissolution ability than that of sodium salt under neutral condition. HEDP•K2 is a good scale inhibitor for calcium carbonate, it 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. 
Specification:

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

Package and Storage:
200L plastic drum, IBC(1000L),customers’ requirement. Storage for ten months in shady room and dry place.
Synonyms:
(1-hydroxyethylidene)bisphosphonic acid;potassium salt
Keywords:  HEDP·K2
Related Products: 
Potassium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na4)
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)