|
Item |
Technical indicators | |
|
Grade 1 |
Pass | |
|
Potassium dihydrogen phosphate (KH2PO4),% ≥ |
98.0 |
97.0 |
|
Water,%≤ |
2.5 |
3.0 |
|
Ph value |
4.3-4.7 |
4.3-4.7 |
|
Water insoluable,% ≤ |
0.2 |
0.5 |
|
Chloride(CL-),% ≤ |
0.2 |
|
|
Iron(Fe), % ≤ |
0.003 |
|
|
Arsenic(As),% ≤ |
0.005 |
- |
|
Heavy metals(Pb),% ≤ |
0.005 |
- |
