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EC number: 224-867-1 | CAS number: 4531-49-1
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Remarks:
- Laser diffraction is the well experienced standard procedure for pigments to determine particle size distribution of the substance as it is manufactured and delivered.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Principles of method if other than guideline:
- Laser diffraction particle sizing
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- 2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2-methoxyphenyl)-3-oxobutyramide]
- EC Number:
- 224-867-1
- EC Name:
- 2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2-methoxyphenyl)-3-oxobutyramide]
- Cas Number:
- 4531-49-1
- Molecular formula:
- C34H30Cl2N6O6
- IUPAC Name:
- 2,2'-[(3,3'-dichlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis[N-(2-methoxyphenyl)-3-oxobutanamide]
- Test material form:
- solid: nanoform
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D50
- Mean:
- 1.9 µm
- St. dev.:
- 0.25
- Percentile:
- D10
- Mean:
- 0.46 µm
- St. dev.:
- 0.05
- Percentile:
- D90
- Mean:
- 140.6 µm
- St. dev.:
- 40
Any other information on results incl. tables
Given standard deviation is based on the general experience with pigments and the method. The estimated values are typical standard deviations:
D10: 4 % of D10 (minimum value 0.05 µm)
D50: 13 % of D50 (minimum value 0.1 µm)
D90: 29 % of D90 - D50
Applicant's summary and conclusion
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