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2058-46-0 Oxytetracycline sodium carbonate
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SPECIFICATION
Item |
Standard |
Result |
Assay |
95%-102% |
99.9% |
Appearance |
Yellow, crystalline powder, hygroscopic |
Complies |
Solubility |
Very slightly soluble in water. It dissolves in dilute acid and alkaline solutions |
Complies |
Identification |
A:TLC:Positive |
Complies |
B:Positive |
Complies |
|
C:Positive |
Complies |
|
PH |
4.5-7.5 |
5.6 |
Specific optical rotation |
- 203° to - 216° |
-210° |
Specific absorbance |
290 to 310 determined at 353 nm |
Complies |
Light-absorbing impurities |
Meet the requirements |
Complies |
Related substances |
Impurity A≤0.5% |
0.04% |
Impurity B≤2% |
0.05% |
|
Impurity C≤2% |
0.065% |
|
Disregard limit≤0.1% |
Complies |
|
Heavy Metal |
≤50PPM |
Complies |
Water |
≤2% |
0.07% |
Sulphated ash |
≤0.5% |
0.02% |
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