|
|
Test Item |
|
Spec. |
Result |
|
|
Appearance |
|
White powder |
White powder |
|
|
Content % |
≥94.00 |
96 |
|
|
|
PH |
3.5-4.5 |
4.21 |
|
|
|
Water insoluble |
% |
≤ 0.6 |
0.03 |
|
|
Lead ( as Pb) mg/kg |
≤ 2 |
1 |
|
|
|
Fluoride (as F) |
mg/kg |
≤ 50 |
8 |
|
|
Arsenic |
mg/kg |
≤3 |
1 |
|
|
Heavy metals( as Pb) mg/kg |
≤10 |
<10 |
|
|
|
|
29.73 |
||
