| ≥1 piece |
|
Item
|
|
Index
|
|
Content(based on dry basis) %
|
≥
|
99.0
|
|
PH value of aqueous solution
|
|
7-9
|
|
Insoluble substance in water %
|
≤
|
0.15
|
|
Water content %
|
≤
|
9.5
|
|
Free acid(based on CH 3 CH 2 COOH) %
|
≤
|
0.11
|
|
Free alkali(based on NaOH) %
|
≤
|
0.06
|
|
Fluoride(based on F) %
|
≤
|
0.003
|
|
Magnesium(based on MgO) %
|
≤
|
0.4
|
|
Arsenic(based on As) %
|
≤
|
0.0002
|
|
Heavy metal(based on Pb) %
|
≤
|
0.001
|