| ITEM |
SPECIFICATION |
| Characteristics |
yellow crystalline powder |
| Identification |
A. Absorption at 353nm: 96.0%~104.0% |
| Crystallinity |
Meet the requirement |
| PH Value |
4.5~7.0 |
| Moisture |
6.0%~9.0% |
| Assay |
>=832 ug/mg |
| Light-absorbing at 430nm |
=<0.25%(anhydrous substance ) |
| Light-absorbing at 490nm |
=<0.20%(anhydrous substance ) |
| U.S. Sieve No.20(850um) |
All pass |
| U.S. Sieve No.80(180um) |
<5% max on the sieve |
| 4-epioxytetracycline |
=<0.5% |
| Tetracycline Hcl |
=<2.0% |
| Eluting on the tail of the principal peak |
=<2.0% |
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