Registration Dossier

Physical & Chemical properties

Particle size distribution (Granulometry)

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The particle size parameters for Allantoin are:  D10 1.5 ± 0.1 µm; D50 8.8 ± 0.8 µm; D90 26.7 ± 1.5 µm
Fraction less than 1 µ 8.4 ± 0.8 vol%; Fraction less than 4 µ 24.7 ± 1.5 vol%; Fraction less than 10 µ 56.1 ± 3.6 vol%; Fraction less than 100 µ 98.0 ± 0.5 vol%.

Additional information

A scientifically valid procedure was used to determine the particle size of Allantoin by laser diffraction. Granulometry was assessed according to ISO 13320; EN 481. The evaluation was done according to the Fraunhofer theory, yielding a conservative estimate.