Customization: | Available |
---|---|
CAS No.: | 50-81-7 |
Formula: | 50-81-7 |
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Package | carton drum with two plastic bags inside |
Net weight | 25KG/Drum |
Storage | Sealed in cool and dry place to avoid moisture and light |
Shelf life | 2 years when properly stored |
Lead time | 1~3 days after confirmation |
Items | Standard |
Description | White crystallization or crystalline powder |
Identification | Should comply with the IR spectrum |
It gives positive reaction | |
Clarity of solution | Clear |
Color of solution | ≤BY7 |
Heavy metal | ≤10ppm |
Copper | ≤5ppm |
Lead | ≤2ppm |
Iron | ≤2ppm |
Cadmium | ≤1ppm |
Arsenic | ≤3ppm |
Mercury | ≤0.1ppm |
Zinc | ≤25ppm |
Oxalic acid | ≤0.2% |
Melting point | 190°C~192°C |
PH(2% water solution) | 2.4~2.8 |
PH(5% water solution) | 2.1~2.6 |
Sulphate Ash(Residue on Ignition) | ≤0.1% |
Specific Optical Rotation | +20.5° ~ +21.5° |
Loss on Drying | ≤0.4% |
Assay | 99.0% ~ 100.5% |
Residual Solvents | Methanol:NMT 3000 ppm |
Related Substances | Impurity C ≤0.15% Impurity D ≤0.15% Any Other Unspecific Impurities≤0.10% Total Impurities≤0.2% |