Study Set Content:
The volume of the particles together with their intraparticle spaces then gives the granule volume, and from a knowledge of the powder weight, one finds the
granule density
can be computed from a knowledge of the true and granule density.
Intraparticle porosity of the granules
The mass of a powder divided by the bulk volume.
Bulk Density
Does not actually reach a maximum until the container has been dropped or tapped some
500 times;
Does not actually reach a maximum until the container has been dropped or tapped some 500 times; however, the (blank) method has been found to give the most consistent results among various laboratories.
three-tap
- low bulk density or large bulk volume
Light
powder of high bulk density or small volum
Heavy
the reciprocal of bulk density
Bulkiness
The bulk density of calcium carbonate can vary from
0.1 to 1.3
The bulk density of calcium carbonate can vary from 0.1 to 1.3, and the lightest or bulkiest type would require a container about (blank) larger than that needed for the heaviest variety
13 times
Bulkiness increases with a decrease
particle size
In a mixture of materials of different sizes, however, the smaller particles (blank)between the larger ones and tend to reduce the bulkiness
shift
When powders were compacted under a pressure of about (blank), the porosities of the powders composed of rigid particles were higher than the porosities of powders in the closest packing, as determined by tapping experiments.
5 kg/cm²
The strength of a compressed tablet depends on a number of factors:
compression force and particle size.
Deformation processes during decomposition may be the principal factors responsible for the success or failure of
compact formation.
Excellent
11-15
Good
21-25
Passable
15-20
Fair
32-37
Very poor
