1-Hydroxyethylidene-1,1-Diphosphonic Acid (HEDP)

Product Name: 1-Hydroxyethylidene-1,1-Diphosphonic Acid (HEDP)

CAS No.: 2809-21-4

Molecular Formula: C2H8O7P2

Character: Pale yellow transparent liquid

Package: 60%: 250kg/drum or IBC / 90%: 25kg/bag

Product Standard: tech grade

Usage: used as scale and corrosion inhibitor, complexing agent for cyanide free electroplating, chelating agent for soap, cleaning agent, and etc

Storage: Keep containers closed and store in dry and cool place

 

Specification:

Items	Specifications
Appearance	Pale yellow transparent liquid
Active content (as HEDP)	≥60.0%
Phosphorous acid (as PO33-)	≤2.0 %
Phosphoric acid (as PO43-)	≤1.0%
PH (1%water solution)	≤2.0
Density(20℃)  g/cm3	≥1.400
Iron	≤10 ppm
Chlorides (as CI-)	≤100 ppm
Acetic acid	≤1.0%
Color (APHA)	≤30
Sequestrant value (CaCO3) mg/g	≥500