|
Items (Reagent grade) |
Specifications (Premium pure) |
Specifications (Analysis pure) |
Specifications (Chemically pure) |
|
Content(CH3COONH4),w/% ≥ |
98 |
98 |
97 |
|
PH value(50g/L,25℃) |
6.7-7.3 |
6.5-7.5 |
6.5-7.5 |
|
Clarity Test/No ≤ |
2 |
3 |
5 |
|
Insoluble Substances,w/% ≤ |
0.002 |
0.005 |
0.01 |
|
Ignition Residue,w/% ≤ |
0.005 |
0.005 |
0.01 |
|
Moisture(H2O),w/% ≤ |
2 |
- |
- |
|
Chlorides (Cl),w/% ≤ |
0.0005 |
0.0005 |
0.001 |
|
Sulfates(SO4),w/% ≤ |
0.001 |
0.002 |
0.005 |
|
Nitrates(NO3),w/% ≤ |
0.001 |
0.001 |
- |
|
Phosphates (PO4),w/% ≤ |
0.0003 |
0.0005 |
- |
|
Magnesium (Mg),w/% ≤ |
0.0002 |
0.0004 |
0.001 |
|
Calcium(Ca),w/% ≤ |
0.0005 |
0.001 |
0.002 |
|
Iron (Fe),w/% ≤ |
0.0002 |
0.0005 |
0.001 |
|
Heavy metal (Pb), w/% ≤ |
0.0002 |
0.0005 |
0.001 |
|
Reduction of Potassium Permanganate,w/%≤ |
0.0016 |
0.0032 |
0.0032 |