Registration Dossier

Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The mass median diameter (MMD) was determined to be 4.6 µm. The particle size distribution was found to range from approximately 0.3 µm to 20 µm.

Additional information

The determination of the particle size distribution of FAT 40825/A was performed according to the European Commission, Document ECB/TM/February 1996: "Particle Size Distribution, Fibre Length and Diameter Distribution" Guidance Document and the EUROPEAN COMMISSION, Directorate General JRC, Joint Research Centre. "Particle Size Distribution, Fibre Length and Diameter Distribution" Draft Guidance Document, EUR 20268 EN (2002), Part 5.2 "Laser scattering / diffraction" using the laser diffraction method.

FAT 40825/A is a fine black powder. Under the microscope (with a magnification of 400) small round dark blue globuline structures were observed.

A solubility test showed, that the test item is both: sparingly soluble and well dispersible in 2-propanol. The particle size distribution of FAT 40825/A was performed with three samples of the stock dispersion.

The results obtained during the measurements showed no relevant difference. Therefore, the study is considered to be valid and no further testing is necessary.

In conclusion, using the laser diffraction method to study the particle size of FAT 40825/A ranging between 0.3 µm and 300 µm, the mass median diameter (MMD) was determined to be 4.6 µm. The particle size distribution was found to range from approximately 0.3 µm to 20 µm.