| Appearance |
White crystalline powder |
Visual inspection |
| Identification |
Consistent with authenticated reference |
FTIR fingerprint comparison |
| Assay |
99.0-101.0% w/w, dry basis |
Potentiometric nonaqueous titration |
| Loss on drying |
≤0.20% w/w |
Gravimetry, 105 C to constant mass |
| Sulfated ash |
≤0.10% w/w |
Gravimetric sulfated residue |
| Chloride |
≤0.02% w/w |
Ion chromatography |