Registration Dossier
Registration Dossier
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EC number: 947-799-0 | CAS number: -
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- March 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Laser Light Scattering. The particle size distribution of powder sample was analysed using the Mastersizer 2000 tool, which used the technique of Laser Diffraction to measure the size of particles. It does this by measuring the intensity of Light Scattered as a Laser beam passes through a dispersed particulate sample. This data is then analysed to calculate the size of the particles that created the scattering pattern.
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- pentasodium bis 4-((2,4-dihydroxy-5-((4-(phenylamino)-3-sulfonatophenyl)diazenyl)phenyl)diazenyl)-3-hydroxy-7-nitronaphthalene-1-sulfonate ferrate
- EC Number:
- 947-799-0
- Molecular formula:
- C56H32FeN12O22S4.5Na
- IUPAC Name:
- pentasodium bis 4-((2,4-dihydroxy-5-((4-(phenylamino)-3-sulfonatophenyl)diazenyl)phenyl)diazenyl)-3-hydroxy-7-nitronaphthalene-1-sulfonate ferrate
- Details on test material:
- The test material is a UVCB substance.
1
Results and discussion
- Mass median aerodynamic diameter:
- 6.859 µm
Particle sizeopen allclose all
- Key result
- Percentile:
- D10
- Mean:
- 5.799 µm
- Remarks on result:
- other: St.dev. not calculated
- Key result
- Percentile:
- D50
- Mean:
- 26.408 µm
- Remarks on result:
- other: St.dev. not calculated
- Key result
- Percentile:
- D90
- Mean:
- 73.768 µm
- Remarks on result:
- other: St.dev. not calculated
Applicant's summary and conclusion
- Executive summary:
The particle size distribution of powder sample was analysed using the Mastersizer 2000 tool, which used the technique of Laser Diffraction to measure the size of particles. It does this by measuring the intensity of Light Scattered as a Laser beam passes through a dispersed particulate sample. This data is then analysed to calculate the size of the particles that created the scattering pattern. The results are as follows:
- D10 = 5.799µm
- D50 = 26.408µm
- D90 = 73.768µm
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