Description
|
Parameters |
Unit |
Grade I |
Grade II |
|
Appearance |
/ |
White or colorless crystal powder |
|
|
Main contents |
≥% |
98.0 |
98.0 |
|
Total nitrogen( N) |
≥% |
17.0 |
17.0 |
|
Phosphorus pentoxide as P₂O₅ |
≥% |
44.0 |
44.0 |
|
pH |
10G/L |
1.6-2.4 |
1.6-2.4 |
|
Moisture |
≤% |
0.5 |
0.5 |
|
Heavy metals, as Pb |
≤% |
0.005 |
0.001 |
|
Arsenic, as As |
≤% |
0.005 |
0.0003 |
|
Flouride,as F |
≤% |
0.2 |
0.001 |
|
Water insoluble |
≤% |
0.1 |
0.1 |
|
Solubility( at 22℃) |
g/L |
620.0 |
|
|
EC(1g/L 20℃) |
mS/cm |
1.976 |
|
