Registration Dossier
Registration Dossier
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EC number: 244-776-0 | CAS number: 22094-93-5
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- August 27, 2002
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Valid method
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 002
- Report date:
- 2002
Materials and methods
- Principles of method if other than guideline:
- Malvern laser diffraction
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- 2,2'-[(2,2',5,5'-tetrachloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2,4-dimethylphenyl)-3-oxobutyramide]
- EC Number:
- 244-776-0
- EC Name:
- 2,2'-[(2,2',5,5'-tetrachloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2,4-dimethylphenyl)-3-oxobutyramide]
- Cas Number:
- 22094-93-5
- Molecular formula:
- C36H32Cl4N6O4
- IUPAC Name:
- 2,2'-[(2,2',5,5'-tetrachlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis[N-(2,4-dimethylphenyl)-3-oxobutanamide]
- Test material form:
- solid: nanoform, no surface treatment
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D50
- Mean:
- 4 µm
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Percentile:
- D50
- Mean:
- 4 µm
- St. dev.:
- 0.52
Any other information on results incl. tables
The product contains about 10 weight-% fine dust below 1 µm not covered by the method of analysis.
Standard deviation calculated from experience with pigments: 0.13 x D50 (minimum value: 0.1)
Applicant's summary and conclusion
- Conclusions:
- The mass median diameter is 4 µm.
- Executive summary:
The mass median diameter using Malvern laser diffraction (volumetric distribution) was determined to be 4 µm.
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