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Physical & Chemical properties

Particle size distribution (Granulometry)

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Description of key information

Three studies were available.

Additional information

In a first study 5% was smaller than 10 micron, and 50% smaller than 100 micron.

In a second study 4% of the particles was smaller than 10 micron, and 44% smaller than 100 micron.

In a third study 10% was smaller than 24 micron and 27% smaller than 100 micron.

Overall, it was concluded that only 27 -50% of the particles are considered inhalable, and that only a very small fraction viz. ca. 5% was smaller than 10 micron and therefore considered respirable.