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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

In accordance with section 2 of REACH Annex XI, it is considered justified to omit the particle size distribution study required under section 7.14 of Annex VII on the grounds that the testing is not technically possible. 
An attempt was made to conduct this study. It was determined that the test substance cannot be analysed by laser diffraction due to the moisture in the substance. Moisture droplets formed in a dispersing solvent interfere with the measurement of particle size of the crystals. Sieving is not an alternative since the test substance sticks to the sieves.
It was therefore concluded that it is technically not possible to determine the particle size distribution of this substance in the commercially form in which it is supplied.

Additional information