Items
|
value
|
Technical Grade
|
Food Grade
|
Main content(as (NH4)2HPO4
|
%≥
|
98.0
|
98.0
|
Phosphorus Pentoxide(as P2O5)
|
%≥
|
53.0
|
53.0
|
Nitrogen(N)
|
%≥
|
21.0
|
21.0
|
pH of 1% solution
|
|
8.0-8.2
|
8.0-8.2
|
Water insolubles
|
%≤
|
0.10
|
0.10
|
Moisture
|
%≤
|
0.5
|
0.5
|
Fluoride (as F)
|
%≤
|
|
0.005
|
Arsenic (as AS)
|
%≤
|
|
0.0003
|
Heavy metals (as Pb)
|
%≤
|
|
0.001
|