Table II.
True, Bulk and Tapped Densities, Carr’s Index, and Hausner Ratio for Commercial Lactose and Lactose Crystallised Under Different Ratios of Ethanol/Butanol (n = 3)
| Sample | True density (g/cm3) | Bulk density (g/cm3) | Tapped density (g/cm3) | CI (%) | Hausner ratio |
|---|---|---|---|---|---|
| Commercial lactose | 1.55 ± 0.05 | 0.62 ± 0.01 | 0.76 ± 0.00 | 18.1 ± 1.7 | 1.22 ± 0.02 |
| Crystallised using ethanol | 1.57 ± 0.01 | 0.18 ± 0.01 | 0.23 ± 0.01 | 21.5 ± 1.7 | 1.27 ± 0.03 |
| Crystallised using ethanol/butanol (60:20) | 1.57 ± 0.01 | 0.20 ± 0.00 | 0.25 ± 0.00 | 20.0 ± 1.1 | 1.25 ± 0.02 |
| Crystallised using ethanol/butanol (40:40) | 1.54 ± 0.00 | 0.18 ± 0.00 | 0.22 ± 0.00 | 23.2 ± 1.4 | 1.30 ± 0.02 |
| Crystallised using ethanol/butanol (20:60) | 1.64 ± 0.00 | 0.28 ± 0.05 | 0.33 ± 0.04 | 19.4 ± 7.8 | 1.25 ± 0.12 |
| Crystallised using butanol | 1.70 ± 0.01 | 0.24 ± 0.01 | 0.32 ± 0.00 | 27.2 ± 2.0 | 1.37 ± 0.04 |