Fitkari
| Chemical Name | Potassium Alum / Potash Alum |
| Molecular Formula | KAl(SO4)2·12H2O |
| Appearance | Colorless or white crystalline solid |
| Odor | Odorless |
| Density | 1.76–1.87 g/cm³ |
| Melting Point | 92–93°C |
| Solubility | Soluble in water (approximately 10% at 20°C) |
| pH (in water solution) | 3.5–4.5 |
| Crystallization | Regular octahedral crystals |
| Molar Mass | 474.39 g/mol |
| Use | Water purification, cosmetics, and medicinal uses |