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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

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Administrative data

Link to relevant study record(s)

Description of key information

Median diameter = 538 µm
0% < 10µm (thoracic fraction), less than 7% < 100µm (inhalable fraction)

Additional information

A reliable study, performed with laser diffraction technique, provided detailed results on the particle size distribution of the powder.

Two internal sieving tests, despite not assignable, were fully consistent for the threshold sizes of 10 and 100 µm relevant for inhalation exposure.