| Items | Specifications |
| Appearance | White to pale cream-coloured crystalline powder |
| Identification | Meet the requirements |
| Appearance of Solution | Meet the requirements |
| UV-adsorption | Standard spectrum |
| Light Absorption | ≤0.20 |
| Loss on Drying | ≤0.50% |
| Sulphated Ash | ≤0.10% |
| Odour | Odourless or almost odourless |
| Assay | ≥98.00% |