Items
|
value
|
Technical Grade
|
Food Grade
|
Main content(as K2HPO43H2O)
|
%≥
|
98.0
|
98.0
|
Phosphorus Pentoxide(as P2O5)
|
%≥
|
40.0
|
40.0
|
Potassium oxide(as K2O)
|
%≥
|
53.0
|
53.0
|
Water insolubles
|
%≤
|
0.25
|
0.25
|
Arsenic
|
%≤
|
0.002
|
0.0003
|
Iron (as Fe)
|
%≤
|
0.004
|
0.003
|
Heavy metals(as Pb)
|
%≤
|
0.005
|
0.0005
|
Chloride (as Cl)
|
%≤
|
0.5
|
0.0005
|
Moisture
|
%≤
|
3.0
|
3.0
|
Ph of 1% solution
|
|
8.9-9.6
|
8.9-9.6
|