Registration Dossier
Registration Dossier
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EC number: 812-037-7 | CAS number: 1793011-72-9
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187.
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
Test material
- Reference substance name:
- Reaction products of diazotized 4-amino-6-[(4-aminophenyl)diazenyl]-3-[(4-aminophenyl)diazenyl]-5-hydroxynaphthalene-2,7-disulfonic acid, coupled with benzene-1,3-diamine, sodium salts
- EC Number:
- 812-037-7
- Cas Number:
- 1793011-72-9
- Molecular formula:
- Unknown for all components
- IUPAC Name:
- Reaction products of diazotized 4-amino-6-[(4-aminophenyl)diazenyl]-3-[(4-aminophenyl)diazenyl]-5-hydroxynaphthalene-2,7-disulfonic acid, coupled with benzene-1,3-diamine, sodium salts
- Test material form:
- solid
Constituent 1
Results and discussion
- Mass median aerodynamic diameter:
- 194.091 µm
- Geometric standard deviation:
- >= 2.85 - <= 2.884
Particle sizeopen allclose all
- Percentile:
- D10
- Mean:
- 39.793 µm
- St. dev.:
- 0.319
- Percentile:
- D50
- Mean:
- 153.442 µm
- St. dev.:
- 2.03
- Percentile:
- D90
- Mean:
- 428.178 µm
- St. dev.:
- 9.999
Any other information on results incl. tables
Visually the sample was observed to be a black powder with clusters. Using a 3.2 objective lens the particles appeared to be irregular shaped crystals. The smallest individual particle size was approximately 10 μm and the largest individual size was approximately 432 μm. Using a 40 objective lens the sample was observed to be made up of single crystalline particles.
Applicant's summary and conclusion
- Conclusions:
- The particle size mass median aerodynamic diameter (MMAD) was determined to be 194.091 µm and the volume of sample with particles < 10 µm was 0.63%.
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