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Table 2 The bulk and tapped densities of the cross-linked three starches

From: Sucrose- and formaldehyde-modified native starches as possible pharmaceutical excipients in tableting

Cross linked agent Bulk density [g/ml] Tapped density [g/ml] Carr’s compressibility index [%] Hausner’s ratio
Maize Wheat Rice Maize Wheat Rice Maize Wheat Rice Maize Wheat Rice
Native Starch 38 47 28 44 52 43 13.6 9.6 34.9 1.16 1.12 1.54
2.5% sucrose 25 32 21.5 35 45 34 28.6 29 36.8 1.40 1.41 1.58
5% sucrose 21 19 27 30 23 35 30.0 17.4 22.9 1.43 1.21 1.30
10% sucrose 20 35 16 32 50 26 37.5 30 38.5 1.60 1.43 1.63
20% sucrose 23 24 29 40 32 35 42.5 25 17.1 1.74 1.33 1.21
40% sucrose 11 37 39.5 15 55 47 26.7 32.7 16 1.36 1.49 1.19
2.5% formaldehyde 18 9 19 22 13 24 18.2 30.8 20.8 1.22 1.44 1.26
5% formaldehyde 22 18 18 31 23 20.5 29.0 21.7 12.2 1.41 1.28 1.14
10% formaldehyde 20 20 15 24 25 17 16.7 20 11.8 1.20 1.25 1.13
20% formaldehyde 24 23 15 32 33 17.2 25.0 30.3 12.8 1.33 1.43 1.15
40% formaldehyde 27 25 14 40 37 16 32.5 32.4 12.5 1.48 1.48 1.14