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EC number: 854-560-3 | CAS number: 1891094-25-9
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Start of experimental 2-12-206 experimental completed 13-12-2016.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- hexasodium 5,5'-{[2,7-disulfonato-9-(2-sulfonatophenyl)-9H-xanthene-9-ylium-3,6-diyl]bis(azanediyl)bis[(2,4,6-trimethyl-3,1-phenylene)aminosulfonyl]}diisophthalate
- EC Number:
- 854-560-3
- Cas Number:
- 1891094-25-9
- Molecular formula:
- C53H38N4Na6O22S5
- IUPAC Name:
- hexasodium 5,5'-{[2,7-disulfonato-9-(2-sulfonatophenyl)-9H-xanthene-9-ylium-3,6-diyl]bis(azanediyl)bis[(2,4,6-trimethyl-3,1-phenylene)aminosulfonyl]}diisophthalate
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
- Mass median aerodynamic diameter:
- 154.449 µm
Particle sizeopen allclose all
- Percentile:
- D10
- Mean:
- ca. 8.133 µm
- St. dev.:
- 1.6
- Percentile:
- D50
- Mean:
- ca. 126.615 µm
- St. dev.:
- 1.9
- Percentile:
- D90
- Mean:
- ca. 454.527 µm
- St. dev.:
- 2
Any other information on results incl. tables
The physical characteristics of the material are recorded, noting such items as shape and size
distribution.
Standard visual observation-Sample observed to contain fine, medium and coarse particles of reddish brown powder and some clusters and agglomerations were observed.
Observation at 100 x magnification-The particles appeared to be irregular shaped crystals. The smallest individual particle size was
approximately 3.2 μm and the largest individual size was approximately 496.00 μm.
Observation at 400 x magnification-The sample was observed to be made up of single crystalline particles and agglomerated particles.
Particle Size Analysis using small volume (wet) module (SVM).
Average (μm)
Volume weighted mean 183.299
Median 126.615
Mode 290.348
MMAD (mass median aerodynamic diameter) 154.449
d10 - 10 % of material is < 8.133
d50 - 50 % of material is < 126.615
d90 - 90 % of material is < 454.527
volume of sample < 10.00 μm 12.60 %
Applicant's summary and conclusion
- Conclusions:
- The sample was observed at different values of magnification and was observed to contain fine , medium and coarse particles - crystalline particles and agglomerated particles
The sample was dispersed in kerosene and analysed further using the Malvern Mastersizer 2000 Laser Diffraction Analyser. The particle size was determined :-
d10 - 10 % of material is < 8.133
d50 - 50 % of material is < 126.615
d90 - 90 % of material is < 454.527
12.60 % by volume of sample was seen to be < 10.00 μm. - Executive summary:
Introduction
The study was conducted to characterise the particle size distribution of the powder. The analysis is conducted initially
using a visual microscope and is then undertaken more formally using a Laser Diffraction Particle Size Analyser.
Results and conclusion
Standard visual observation -Sample observed to contain fine, medium and coarse particles of reddish brown powder , some clusters and agglomerations were observed.
Observation at 100 x magnification-The particles appeared to be irregular shaped crystals. The smallest individual particle size was
approximately 3.2 μm and the largest individual size was approximately 496.00 μm.
12.60 % by volume of sample was seen to be < 10.00 μm.
Observation at 400 x magnification-The sample was observed to be made up of single crystalline particles and agglomerated
particles.
The Lazer diffraction partlcile size analysis results :-
d10 - 10 % of material is < 8.133
d50 - 50 % of material is < 126.615
d90 - 90 % of material is < 454.527
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