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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