| Characters | White or almost white powder |
| IR | Standard Spectrum |
| Loss on drying | 0.5%Max |
| pH | 4.0-6.0 |
| Sulphated ash | 0.1%Max |
| Heavy Metals | 10ppm Max |
| Related Substance Individual impurity Total impurities |
0.5%Max 1.0%Max |
| Assay | 98.0-102.0% |

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