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1-Hydroxyethylidene-1,1-diphosphonic acid HEDP

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)

CAS No.:2809-21-4

Molecular formula:C₂H₈O₇P₂

Relative molecular weight:206.02

Quality indicators confirm to HG/T 3537-1999

 

 

Item	Indicators
	HG/T 3537-1999
Appearance	Colorless or Light yellow transparent liquid	White powder solid
The active component （ HEDP ）％ ≥	50.0       60.0	89.0
Phosphorous acid（PO33-）% ≤	2.0        2.0	0.80
Phosphoric acid（PO43-）% ≤	0.8        0.8	0.50
Chloride（Cl-）% ≤	1.0        1.0	0.10
PH （1％ water solvent ） ≤	2          2	2.0
Density（20℃）g/cm3 ≥	1.34       1.40	——
Iron（ Fe3+ ）content     ppm ≤	10         10	5.0
Active components（HEDP•H2O） % ≥	——	98.0

 

 

Packaging and storage

HEDP liquid,packed with plastic drum，each drum 30Kg or 250Kg,HEDP solid plastic bags lined with polyethylene bags packaging.The net weight 25kg, can also be used as required. Stored in cool indoor ventilation, moisture, storage period: 10 months.

Protection

HEDP is acidic, you should avoid contact with eyes, skin, once splashed immediately with plenty of water.

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