Physical state at 20 °C | Solid | Odour | Odorless |
Melting point/ Freezing point [°C] | 260 °C | Solubility in water [% weight] | Negligible |
Appearance | White, yellowish-white or grayish-white powder or granules |
Assay (acetyl group) | 29 – 45% |
Free acid (as acetic acid) | Max 0.1% |
Loss on drying (at 105°C) | Max 5.0% |
Sulphated ash | Max 0.1% |