Definition of Bulkiness:
- Bulkiness affects flow, compressibility, and formulation quality in pharmaceuticals.
- The reciprocal of bulk density. Indicates how much volume a given mass of powder occupies.
$B = \tfrac{1}{\rho_{b}} \; \text{(Bulkiness)}$
- Units: cm³/g
- A bulky powder has low bulk density and occupies more volume.
Importance:
- High bulkiness = light, fluffy powder
- Important for container size, transport, and dose uniformity
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