1 | Description | White to light cream-colored, crystalline powder. Is affected by light. | White to Light cream-colored, crystalline powder. Is affected by light. |
2 | Solubility | Passes | Freely soluble in water; soluble in alcohol; sparingly soluble or soluble in ethanol (96%), practically insoluble in ether & methylene chloride |
3 | Identification (By IR) | Complies | IR spectra of the sample should be concomitant with IR spectra of the corresponding standard |
4 | Identification (By chemical test) | Complies | A pale yellow precipitate should be form |
5 | Identification (by Assay) | Complies | The retention time of the major peak of the sample solution should correspond to that of the standard solution as obtain in the assay |
6 | Identification(By Melting point) | 107°C | 103°C - 115°C |
7 | Identification (Mercury) | Complies | The spot should disappear |
8 | Identification (Sulfate) | Complies | A white precipitate should form |
9 | Identification (Sodium) | Complies | A dense white precipitate should form. |
10 | Appearance of solution | Passes | Solution should not be more opalescent than reference suspension II and not more intensely coloured than reference solution B6 |
11 | pH | 7.09 | 6.0 - 8.0 |
12 | Assay (By HPLC, on dried basis) | 99.23% | 97.0% - 102.0% |
13 | Assay(By titration, dried substance) | 98.6% | 97.0% - 101.0% |
14 | Mercury/ Inorganic mercury compounds | 0.46% | NMT 0.70% |
15 | Organic impurities : Thiosalicylic acid | Not detected | NMT 0.10% |
16 | Organic impurities : Thimerosal related compound A | 0.07% | NMT 0.10% |
17 | Organic impurities : Any other individual impurity (Unspecified impurity) | 0.06% | NMT 0.10% |
18 | Organic impurities : Total impurities | 0.13% | NMT 1.0% |
19 | Loss on drying | 0.3% | NMT 0.5 % |