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Tetracaine hydrochloride
| ITEMS | LIMIT |
| Description | A white,crystalline power |
| Identification | A.By UV, To match with working standard |
| B: Dissolve 100 mg in 10 mL of water, and add 1 mL of potassium thiocyanate | |
| solution (1 in 4): a crystalline precipitate is formed. Recrystallize the precipitate | |
| from water, and dry at 80 for 2 hours: it melts between 130 and 132 . | |
| C. A solution of 100 mg in 5 mL of water meets the requirements of the tests | |
| for Chloride | |
| Chromatographic purity | Conform to standard |
| Water | ＜2.0% |
| Resiue on ignition | ≤0.1% |
| Assay(*) | 98～101.0% |
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