Customization: | Available |
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CAS No.: | 84380-01-8 |
Formula: | C12h16o7 |
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Test Items | Specification | Test Result |
Appearance | White or white-like crystalline powder | White crystalline powder |
Arbutin | ≥99.95% | 99.99% |
Melting point | 202~207±0.5ºC | 204.8-206.0 |
Loss on drying | ≤0.5% | 0.04% |
Clarity of water solution | Transparency, colorless, none suspended matters | Pass |
PH | 5.0~7.0 | 5.4 |
Specific optical rotation | (α)20D=+174.0°-+186.0° | +180.04° |
Infra-red peak value | 1514cm-1 1229cm-1 1215cm-11059cm-1 1034cm-1 | Pass |
Arsenic | ≤2 ppm | <2 |
Total Plate count | ≤100cfu/g | <10 |
Molds and Yeast | ≤50cfu/g | <10 |
Heavy metal | ≤10 ppm | <10 |
Ignition residue | ≤0.5% | 0.07 |
E Coli | Negative | Negative |
Staphylococcus aureus | Negative | Negative |
P.aeruginosa | Negative | Negative |
Conclusion | Qualified |