| ≥1 piece |
|
Item
|
Index
|
|
|
GB15572-1995
|
USP32
|
|
|
C 4 H 6 CaO 4 %
|
98.0 ~ 102.0
|
99.0 ~ 100.5
|
|
PH
|
6-8
|
6.3-9.6
|
|
Sulfate % ≤
|
0.1
|
0.06
|
|
Nitrate % ≤
|
--
|
Meet the requirements
|
|
Chloride % ≤
|
0.05
|
0.05
|
|
Heavy Metals % ≤
|
0.0025
|
0.0025
|
|
Lead % ≤
|
--
|
0.001
|
|
Arsenic ≤
|
0.0002 %
|
3ppm
|
|
Magnesium and alkali salts % ≤
|
1.0
|
--
|
|
Barium
|
Meet the requirements
|
Meet the requirements -
|
|
water % ≤
|
7.0
|
7.0
|
|
Fluoride (F ) % ≤
|
0.005
|
0.005
|
|
Readily oxidizable substances
|
--
|
Meet the requirements
|