Item Index GB15572-1995 USP27* …
Item | Index | ||
GB15572-1995 | USP27* | ||
C 4 H 6 CaO 4 | % | 98.0-100.2 | 99.0-100.5 |
pH | 7.2-8.2 | 6.3-9.6 | |
Sulfate | % | 0.1 | 0.06 |
Nitrate | % | -- | Meets the requirements |
Chloride | % | 0.05 | 0.05 |
Heavy metals | % | 0.0025 | 0.0025 |
Lead | % | -- | 0.001 |
Arsenic | 0.0002 % | 3 ppm | |
Magnesium and alkali salts | % | 1.0 | -- |
Barium | Meets the requirements | -- | |
Water | % | 7.0 | 7.0 |