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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Particle Size Distribution:

% test material             particle size (microns)

        3.51                            <=  2.00

      21.40                            <= 10.1

      99.51                            <= 203.3

Mass Median Diameter: Calculated mass median aerodynamic diameter: 40 microns  

Calculated percentage <10 microns aerodynamic diameter: 9.5%

Additional information

Although the calculated proportion of particles with an aerodynamic diameter less than 10 µm is less than 10% it is considered that, given the assumptions made in the calculation and the possible bimodal nature of their size distribution, (there appears to be a sub-population of very small particles), we advise that there is some potential for inhalation of this material.