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CAS NO.56-75-7
Specification
Chloramphenicol (Chloromycetin CAS No.56-75-7) |
|
Test |
Specification |
Appearance |
A white, greyish-white or yellowish-white, fine, |
|
crystalline powder or fine crystals, needles or elongated plates |
Identification |
|
|
A: Melting point: 149 ~ 153 |
|
B: The infrared absorption spectrum obtained with sample |
|
corresponds to that obtained with Chloramphenicol CRS. |
Acidity or alkalinity |
≤0.1ml |
Specific optical rotation |
+18.5°~+20.5° |
Related substances |
Single impurity≤0.5% |
Chloride |
≤100 ppm |
Loss on drying |
≤0.5% |
Sulphated ash |
≤0.1% |
Assay |
98.0% ~ 102.0% (on the dried basis) |
Residual solvent |
Methanol≤3000ppm |
Application
Antibiotic resistant raw material
Packaging
25KG/fiber drum