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Physical & Chemical properties

Particle size distribution (Granulometry)

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Description of key information

In the sieve analysis, a low proportion of particles were found to be less than 100 µm, and as a result, the test material can be considered essentially non-inhalable. However, using the rotating brush generator, a significant proportion of the test material was caused to form dust, indicating that, under forced conditions, the test material may present a hazard by inhalation.

Additional information

Particle size data was acquired using a procedure designed to comply with that specified in the European Commission technical guidance document 'Particle Size Distribution, Fibre Length and Diameter Distribution' (June 1996).

The results are shown below:

Measurement

Method

Result

Proportion of test material less than 100 µm

Sieve

1.0%

Proportion of test material less than 10 µm

Cascade impactor

26.8%