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1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 60%(HEDP)

CAS: 2809-21-4 
CLASS:8 
UN NO.:3265

ITEM                                        UNIT     SPECIFICATIONS
Appearance                                /      Clear,colorless to pale yellow aqueous solution
Active content (as acid)             %      58.00-62.00
Phosphoric acid (as PO43-)       %       0.6 Max.
Phosphorous acid (as PO33-)   %       1.0 Max.
Chloride (as CL-)                      %        0.01 Max
PH (1% water solution)            /          2.00 Max
Ca sequestration                     Mg/g    500.00 Min
Density(20℃)                           g/cm    31.40 Min
Fe                                             ppm    10.00 Max
Colour APHA (Hazen)                 /         30.00Max

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 90%(HEDP)

ITEM                               UNIT    SPECIFICATIONS
Appearance                         /      White crystalline powder
Active content (as acid)        %     98 Min
Phosphoric acid (as PO43-)    %     0.7 Max.
Phosphorous acid (as PO33-)  %     2.5 Max.
Chloride (as CL-)                  %     1.0 Max
PH (1% water solution)          /      1.6 Max
Fe                                    ppm    35.00 Max

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