Complaint
| Name of index | FCC-V | E 508 | |
| Description | Colorless, elongated, prismatic or cubital crystals or white granular powder, odorless. | ||
| Content (on dry basis ) | ≥% | ≥99.0 ≥98.0when contains added substance(s) | 99.0 |
| Solubility | -- | Freely soluble in water. Insoluble in ethanol | |
| Identification | Pass test | Pass test | |
| Acidity and Alkalinity | Pass test | Pass test | |
| Heavy metals (as Pb) | ≤mg/kg | 5 | -- |
| Iodide and/or Bromide | Pass test | Pass test | |
| Loss on drying, | ≤% | 1.0 | 1.0(105 °C, 2hours) |
| Sodium | Pass test | Negative | |
| Arsenic (As) | ≤ppm | -- | 3 |
| Lead (Pb) | ≤ppm | -- | 2 |
| Mercury (Hg) | ≤ppm | -- | 1 |
| Cadmium (Cd) | -- | 1 | |
