| ≥1 piece |
|
Item
|
GB25565-2010
|
FCC,1996
|
||
|
Content ≥%
|
Anhydrous
|
97.0
|
97.0
|
|
|
dodecahydrate
|
97.0
|
92.0
|
||
|
Heavy metal ≤%
|
0.001
|
--
|
||
|
Lead ≤%
|
0.0004
|
--
|
||
|
Water insoluble ≤%
|
0.2
|
0.2
|
||
|
Fluorides ≤%
|
0.005
|
0.005
|
||
|
PH
|
11.5 12.5
|
--
|
||
|
Arsenic ≤%
|
0.0003
|
0.0003
|
||
|
P 2 O 5 ≥%
|
39.83
|
39.83
|
||
|
loss on drying
|
Anhydrous
|
2.0
|
2.0
|
|
|
dodecahydrate
|
45.0 57.0
|
45.0 57.0
|
||