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Physical properties of the potassium salt of 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP·K2)

Technical Specification

ItemsIndex
AppearanceColorless to yellowish transparent liquidWhite powder
Active content(HEDP), %26.0-30.065.0 min
Active content(HEDP.K2), %-89.0 min
Total phosphoric acid (PO43-), %24.7-26.7-
Fe, mg/L20.0 max20.0 max
Density (20℃), g/cm31.30-1.40-
pH (1% water solution)6.0-8.06.0-8.0

Applications & Usage

HEDP.K2 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.

Scale and Corrosion inhibition Performance

CaCO3 inhibitionCaSO4 inhibitionCa3(PO4)2 inhibitionBaSO4 inhibitionCaF2 inhibition
ExcellentPoorVery GoodGoodGood
Calcium ToleranceIron ControlSequestrationSteel corrosion inhibition
PoorYesGoodVery Good
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