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EC number: 246-115-1 | CAS number: 24271-12-3
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 17 January 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- adoptation 2009
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Ministry of Health, Italy
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- Octadecyl docosanoate
- EC Number:
- 246-115-1
- EC Name:
- Octadecyl docosanoate
- Cas Number:
- 24271-12-3
- Molecular formula:
- C40H80O2
- IUPAC Name:
- octadecyl docosanoate
Constituent 1
Results and discussion
- Remarks on result:
- other: Manual sieve analysis indicated that 64% w/w of the sample had a particle size of <1.4 mm, thus the results below represent size distribution after separation of ca. 36% of oversized fraction
Particle sizeopen allclose all
- Key result
- Percentile:
- D90
- Mean:
- 927.181 µm
- St. dev.:
- 132.033
- Remarks on result:
- other: Mean value is calculated by software of the apparatus Mastersizer 2000 from the data captured in each run and is not a simple arithmetic mean
- Key result
- Percentile:
- D50
- Mean:
- 339.854 µm
- St. dev.:
- 73.843
- Remarks on result:
- other: Mean value is calculated by software of the apparatus Mastersizer 2000 from the data captured in each run and is not a simple arithmetic mean
- Key result
- Percentile:
- D10
- Mean:
- 71.895 µm
- St. dev.:
- 22.536
- Remarks on result:
- other: Mean value is calculated by software of the apparatus Mastersizer 2000 from the data captured in each run and is not a simple arithmetic mean
Any other information on results incl. tables
The particle size distribution of the test item was determined in 9 measurements. The instrument generated a mean value and size distributions automatically.
Manual sieve analysis indicated that 64% w/w of the sample had a particle size of <1.4 mm.
Table. Particle size distribution <1.4 mm
| Measurement | L10 D(v, 0.1) [µm] | L50 D(v, 0.5) [µm] | L90 D(v, 0.9) [mm] |
| 1 | 98.191 | 423.476 | 1059.848 |
| 2 | 75.344 | 342.569 | 921.706 |
| 3 | 62.576 | 299.319 | 837.519 |
| 4 | 93.914 | 399.090 | 1019.719 |
| 5 | 123.231 | 488.587 | 1138.972 |
| 6 | 74.597 | 337.527 | 907.747 |
| 7 | 45.180 | 236.528 | 702.486 |
| 8 | 59.394 | 280.480 | 772.389 |
| 9 | 64.323 | 308.805 | 858.311 |
| Mean Value | 71.895 | 339.854 | 927.181 |
| Standard Deviation of the population | 22.536 | 73.843 | 132.033 |
The volume mean diameter of the test item labelled as Octadecyl docosanoate (<1.4 mm) was found to be 430.38 µm.
The 90%, 50% and 10% mean cumulative size distributions were found to be 927.18 µm, 339.85 µm and 71.89 µm, respectively.
Applicant's summary and conclusion
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