Registration Dossier
Registration Dossier
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EC number: 215-649-7 | CAS number: 1336-80-7
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 23. Mar. 2020 (Experimental Date); 14. Apr. 2020 (Report Date)
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- Principles of method if other than guideline:
- - Principle of test:
Laser diffraction.
- Short description of test conditions: The particle size is measured by laser diffraction. The Sympatec HELOS KF determines the diffraction pattern of a laser light beam. Analyses were performed using three different batch numbers of the product. The sample is dropped through parallel beam laser beam setup by dropping it from a dispersing unit with Sympatec VIBRI vibrating rail and pneumatic conduction with a pressure of 3.00 bar. An optical concentration of approx. 4% was measured within the detector cell in all three measurements.
The particles pass through the laser beam. Depending on their size, diffraction takes place. A smaller particle size leads to a wide diffraction pattern, while large particles give a smaller diffraction. The laser’s diffraction pattern is detected within the device, and is used to calculate the particle size distribution.
- Parameters analysed / observed:
The laser’s diffraction pattern is detected within the device, and is used to calculate the particle size distribution. - GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Key result
- Percentile:
- D50
- Mean:
- 18 µm
- St. dev.:
- 8.1
- Key result
- Percentile:
- D50
- Mean:
- 21.4 µm
- St. dev.:
- 8.7
- Key result
- Percentile:
- D50
- Mean:
- 14.6 µm
- St. dev.:
- 7.3
- Conclusions:
- All three batches analysed are showing a similar pattern of the particle size distribution (PSD).
The statistic average (d50) is at 18.0, 21.4, and 14.6 μm, respectively. The largest particles were found to be in the range between 90 and 125 μm.
Reference
Description of key information
All three batches analysed are showing a similar pattern of the particle size distribution (PSD).
The statistic average (d50) is at 18.0, 21.4, and 14.6 μm, respectively. The largest particles were found to be in the range between 90 and 125 μm.
Additional information
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