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EC number: 204-464-7
CAS number: 121-32-4
Picture digital camera: White
powder of fine crystals, with some agglomerates and lumps.
Microscope pictures: Morphology:
fine crystals from 50 to > 300 µm with various shapes, major presence of
very small particles in the range 30 to 50µm.
of particles<105µm :
24.2% in volume.
In a study (Rhodia 2010), particle size
distribution of Ethylvanillin (purity > 99%) was
characterized with pictures by digital camera and under microscopy for
qualitative data. Size
distribution has been investigated by standard sieving and laser
determined D50, by diffraction laser was 151.4 µm for ethylvanilline.
Two studies were available, giving the same
range of particle size.
One of them (CRTL, 2010) was chosen as key
study and has reliability 1 according to Klimisch scale. The determined
D50 for Ethylvanillin was 151.4 µm in this study.
The other study (Vibert, 2004) gave a
particle size D50 of 200 µm, and was selected as supporting study
(Klimisch scale of 2).
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