|
Item |
Specification |
Results |
|
Appearance |
White crystals |
White crystals |
|
Melting point, |
≥69 |
69.5 |
|
Moisture, w/% |
≤0.05 |
0.042 |
|
Residue on ignition, w/% |
≤0.005 |
0.003 |
|
Sulphate , w/% |
≤0.002 |
＜0.002 |
|
Heavy metal,mg/kg |
≤5 |
＜5 |
|
AS,mg/kg |
≤1 |
＜1 |
|
Free phenol, w/% |
≤0.02 |
0.002 |
