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Physical & Chemical properties

Particle size distribution (Granulometry)

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Description of key information

The particle size distribution quinidine gluconate and quinine base, anhydrous sample #1 is < 250 µm and the particle size distribution of sample #2 is < 63 µm. The mass median diameter is in a range of 14 - 28µm.

Additional information

In this study report, the particle size distribution of quinidine gluconate and quinine base anhydrous, which is a stereoisomer of quinidine, were determined for two samples. The particle size distribution of quinidine gluconate sample #1 is < 125 µm and the particle size distribution of sample #2 is < 63 µm. The particle size distribution of quinine base anhydrous sample #1 is < 250 µm and the particle size distribution of sample #2 is < 63 µm. In sample #2 lower particle sizes were measured, so that this sample is more conservative for prediction the dustiness. With regard to inhalation potential, 100 % can be inhaled (<100 µm). 68 % of quinidine gluconate has a particle size < 20 µm and 38 % of quinine base anhydrous has a particle size < 20 µm. Therefore, the alveoli relevant respirable fraction (<10 µm) is < 68%. The mass median diameter is in a range of 14 - 28 µm.