| 1 | Description | White powder, having a mild odor. Its solution (1 in 100) is slightly alkaline to litmus. | White or yellowish white crystals or powder, having a mild odor. Its solution (1 in 100) is slightly alkaline to litmus. | USP/Ph.Eur/BP |
| 2 | Solubility | Complies | Soluble in water, in alcohol, ethanol (96%) and in chloroform ; slightly soluble in ether. freely soluble in methylene chloride. An aqueous solution froths copiously when shaken. | USP/Ph.Eur/BP |
| 3 | Identification (By chemical test 1) | Complies | A white precipitate, which is insoluble in 2N nitric acid but soluble in 6N ammonium hydroxide,should form. | USP/Ph.Eur/BP |
| 4 | Identification (By chemical test 2) | Complies | A blue colour should develop in the lower layer. | Ph.Eur/BP |
| 5 | Identification (By IR) | Complies | IR spectra of the sample should be concomitant with IR spectra of the standard. | USP |
| 6 | Identification (by Assay) | Complies | The retention time of the major peak of the sample solution corresponds to the standard solution, as obtained in the Assay. | USP |
| 7 | Identification(By Melting point) | 162.2°C | 158°C - 164°C, after drying at 105°C for 4 Hr. | Ph.Eur/BP |
| 8 | Identification (By TLC) | Complies | The principal spot in the chromatogram obtained with the test solution is similar in position and size to the principal spot in the chromatogram obtained with the reference solution. | Ph.Eur/BP |
| 9 | Appearance of Solution | Complies | Solution S is Clear and not more intensely coloured than reference solution Y6. | Ph.Eur/BP |
| 10 | Assay (By HPLC, on dried basis) | 99.9% | 97.0% - 103.0% | USP |
| 11 | Assay (By Titration, on dried basis) | 99.5% | 97.0% to 103.0% | Ph.Eur/BP |
| 12 | Residue on ignition /Sulfated ash | 0.04% | NMT 0.1% | USP/Ph.Eur/BP |
| 13 | Organic impurities : Total impurities | Not detected | NMT 1.0% | USP |
| 14 | Loss on drying (105 °C, 4 hr) | 2.6% | NMT 5.0% | USP/Ph.Eur/BP |
| 15 | Acidity or Alkalinity | Complies | The solution should orange-red | Ph.Eur/BP |
| 16 | Volatile bases and salts of volatile bases | Less than 50ppm | NMT 50ppm | Ph.Eur/BP |
| 17 | Bacterial endotoxins | Less than 2.5 EU/mg | NMT 2.5 EU/mg | In-House |
| 18 | Total aerobic microbial count | Less than 100 CFU/gm | NMT 100 CFU/gm | In-House |
| 19 | Total combined yeast and molds count | Less than 10 CFU/gm | NMT 10 CFU/gm | In-House |