|
Ferric Alum
Chemical Composition of Ferric Alum
| Our Alum Sample Characteristics |
Grade 1
|
Grade 2
|
Grade 3
|
|
Insoluble matter % by mass, Max
|
0.5
|
0.5
|
0.25
|
|
Soluble Iron compound, % by mass, Max
|
0.7
|
0.7
|
0.35
|
|
Water soluble aluminium compound as Al2O3 percentage by mass, min
|
17.5
|
16.0
|
15.5
|
|
pH of 5% aqueous solution, min
|
2.7
|
2.7
|
2.7
|
|
Basicity (as Al2O3), % by mass, Max
|
0.5
|
0.45
|
0.40
|
|
Additional requirements for material required for purification of water
|
-
|
-
|
-
|
|
Lead (as Pb) parts per million, max
|
NIL
|
NIL
|
NIL
|
|
Arsenic (as As2O3) parts per million
|
NIL
|
NIL
|
NIL
|
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