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EC number: 210-283-4 | CAS number: 611-92-7
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:
- 19.9.2016
- 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)
- Deviations:
- no
- GLP compliance:
- no
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Mass median aerodynamic diameter:
- 59.4 µm
- Percentile:
- D10
- Mean:
- 18.8 µm
- St. dev.:
- 0.8
- Percentile:
- D90
- Mean:
- 142 µm
- St. dev.:
- 9
- Conclusions:
- See Executive Summary
- Executive summary:
The particle size distribution of the test substance, Methylcentralit was determined. The laser diffractionmethod 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 oftest substance, Methylcentralit,is characterized by the following table:
Determination
Median
(µm)
Diameter on Cumulative 90%
(µm)
Diameter on Cumulative 10%
(µm)
Span
(-)
Final result
59.4
142.0
18.8
2.1
Extended uncertainty
2.2
9.0
0.8
-
Extendeduncertainty was calculated by using a coverage factor of2.
Reference
Description of key information
Only one study is available.
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.
GLP study.
Klimish score 1.
Median = 59.4 µm
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