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EC number: 233-311-7 | CAS number: 10114-47-3
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- First edition 2009-10-01
- Deviations:
- not specified
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
- Mass median aerodynamic diameter:
- 84.3 µm
- Geometric standard deviation:
- 79.6 - 89
- Key result
- Percentile:
- D50
- Mean:
- 84.3 µm
- St. dev.:
- 4.7
- Percentile:
- D10
- Mean:
- 17.4 µm
- St. dev.:
- 1
- Percentile:
- D90
- Mean:
- 227.4 µm
- St. dev.:
- 13.1
- Conclusions:
- Particle size distribution of test substance, Direct Yellow 28, is characterized by the following:Determination Median: 84.3 µmDiameter on Cumulative 90%: 227.4 µmDiameter on Cumulative 10%: 17.4 µm
- Executive summary:
The particle size distribution of the test substance, Direct Yellow 28, was determined. The laser diffraction method was used. The procedures used in the study were in accordance with:
Guidance Document on the Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of Chemical Substances, EUR 20268 EN (2002).
Standard ISO 13320: 2009 Particle size analysis – Laser diffraction methods, First edition 2009-10-01.
Particle size distribution of test substance, Direct Yellow 28, is characterized by the following:
Determination Median: 84.3 µm
Diameter on Cumulative 90%: 227.4 µm
Diameter on Cumulative 10%: 17.4 µm
Reference
Table No. 1:Results of determination of particle size distribution
Determination | Median (µm) | Diameter on Cumulative 90% (µm) | Diameter on Cumulative 10% (µm) | Span |
1 | 74.0 | 227.5 | 14.9 | 2.9 |
2 | 84.5 | 247.6 | 16.9 | 2.7 |
3 | 84.3 | 227.4 | 17.4 | 2.5 |
4 | 79.4 | 215.8 | 16.1 | 2.5 |
5 | 84.9 | 215.6 | 17.2 | 2.3 |
Average | 81.4 | 226.8 | 16.5 | 2.6 |
Standard deviation | 4.7 | 13.1 | 1.0 | 0.2 |
Extended uncertainty | 9.4 | 26.2 | 2.0 | - |
The value nearest to average was use as the final result of the test. That was the 3rdmeasurement.
Description of key information
Particle size distribution of test substance, Direct Yellow 28, is characterized by the following:
Determination Median: 84.3 µm
Diameter on Cumulative 90%: 227.4 µm
Diameter on Cumulative 10%: 17.4 µm
Additional information
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