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Molecular formula: C 4 H 6 NO 4 K·2H 2 O
Molecular weight: 207.10
Characters:White crystals or a crystalline powder, odorless, freely soluble in water
Item |
Standard
|
Assay[Mg]% |
99.0~101.0 |
Specific rotation[α] D 20 |
+16.2°∼+17.2° |
[pH] | 6.0~7.5 |
Transmittance% |
≥98.0 |
Chloride[Cl]% |
≤0.02 |
Sulfate[SO 4 2- ]% | ≤0.05 |
Arsenic[As]ppm | ≤1 |
Heavy Metals[Pb]ppm | ≤10 |
Ammonium salt[NH 4 ]% | ≤0.05 |
Iron[Fe]ppm | ≤20 |
|
Type: Preservatives |