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Particle size distribution (Granulometry)

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Description of key information

The particle size distribution of FAT 40061/F was determined by mass based distribution according to OECD guideline 110.

Additional information

Sampling for the cascade impactor determinations was performed by rolling the test item container for approximately 10 minutes then sampled from the top, middle and bottom.

Too few particles were of a size less than 10.0 μm to allow accurate assessment of the mass median aerodynamic diameter.

The inhalable fraction is defined as the mass fraction of particles which can be inhaled by nose or mouth, the thoracic fraction is defined as the mass fraction of particles that passes the larynx and the respirable fraction is defined as the mass fraction of particles that reaches the alveoli.

Particle size data acquired for the test item is as follows:

Percentage of test item with an inhalable particle size <100 µm (Sieve Method): 95.9%

Percentage of test item with a thoracic particle size <10.0 µm (Cascade Impactor): 0.27%

Percentage of test item with a respirable particle size <5.5 µm (Cascade Impactor): 0.17%