| Appearance |
White crystalline powder |
Visual inspection |
| Identification |
Consistent with authenticated reference |
FTIR fingerprint comparison |
| Assay |
97.0-102.0% w/w, dry basis |
HPLC-RI with external standard |
| Loss on drying |
≤0.50% w/w |
Gravimetry, 105 C to constant mass |
| Reducing sugars |
≤0.30% w/w as glucose |
Calibrated reducing-sugar assay |
| Sulfated ash |
≤0.10% w/w |
Gravimetric sulfated residue |