Registration Dossier
Registration Dossier
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EC number: 276-461-9 | CAS number: 72207-62-6
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 24 September 2009
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study performed according to company guideline, similar to draft EU method
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- other: EU 20268
- Principles of method if other than guideline:
- Ciba method SOP-24b (laser diffraction, dry measurement). This method is comparable to the draft guidance document EUR 20268 (2002, part 5.2 ¿Laser scattering/diffraction¿ for ¿Particle Size Distribution, Fibre Length and Diameter Distribution¿, European Commission, Directorate General JRC) (http://ecb.jrc.ec.europa.eu/documents/Testing-Methods/Guidance_Document_on_Granulometry.pdf)
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- Butanamide, 2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-, N,N'-bis(phenyl and 2,4-xylyl) derivs.
- EC Number:
- 276-461-9
- EC Name:
- Butanamide, 2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-, N,N'-bis(phenyl and 2,4-xylyl) derivs.
- Cas Number:
- 72207-62-6
- Molecular formula:
- C32H26Cl2N6O4 // C34H30Cl2N6O4 // C36H34Cl2N6O4
- IUPAC Name:
- Butanamide, 2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(2,1-diazenediyl)]bis[3-oxo-, N,N'-bis(phenyl and 2,4-xylyl) derivs.
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D50
- Mean:
- 12.45 µm
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Percentile:
- D50
- Mean:
- 12.45 µm
- St. dev.:
- 0.19
Any other information on results incl. tables
The values represent averages of three different measurements of the same lot. Individual values: 12.67, 12.33 and 12.35 µm, standard deviation calculated from these values: 0.19 µm.
Applicant's summary and conclusion
- Conclusions:
- The mass median diameter is 12.45 µm.
- Executive summary:
- The mass median diameter using Malvern laser diffraction (volumetric distribution) was determined to be 12.45 µm.
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