| ≥1 piece |
|
No.
|
Index
|
Industrial Grade
|
Food Grade
|
|
1
|
Main content %≥
|
98.0
|
98.0
|
|
2
|
P 2 O 5 %≥
|
18.3
|
18.3
|
|
3
|
Chloride, as Cl %≤
|
1.5
|
0.3
|
|
4
|
Alkalinity, as Na 2 O %≤
|
15.5-19
|
15.5-19
|
|
5
|
Sulfate, as SO 4 %≤
|
0.5
|
0.5
|
|
6
|
Heavy metal, as Pb %≤
|
-
|
0.001
|
|
7
|
Arsenic, as As %≤
|
-
|
0.0003
|
|
8
|
Fluoride, as F %≤
|
-
|
0.002
|
|
9
|
Water insoluble %≤
|
0.10
|
0.05
|