|
Item |
Standard |
Results |
|
Appearance |
White crystal powder |
Conforms |
|
Content |
99%Min |
99.87% |
|
State of solution |
Clarification |
Conforms |
|
Appearance of solution |
Qualified |
Conforms |
|
Fumaric acid |
≤1.5% |
0.12% |
|
Sulphate ash |
≤0.1% |
0.05% |
|
Heavy metals(As Pb) |
≤10 mg/kg |
<10 |
|
Iron(As Fe) |
≦5 mg/kg |
<5 |
|
Fumaric acid |
≤1.5% |
0.12% |