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Particle size distribution (Granulometry)

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Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2011
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The reliability is rated 2 because the study is well documented and meets generally accepted scientific principles. The results were reviewed for reliability and assessed as valid. Study not conducted under GLP conditions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: SAV. 038: Medianwert-Bestimmung (PartikelgrÖssen-Verteilung)
Principles of method if other than guideline:
Laser diffraction on particles placed in a suspension
GLP compliance:
no
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
tetrakis{9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethylxanthylium} C12-(branched and/or linear)-alkyl-(4-sulfonatophenoxy)benzenesulfonate and oxybis[C12-(branched and/or linear)-alkyl-benzenesulfonate]
EC Number:
700-761-5
Molecular formula:
not applicable
IUPAC Name:
tetrakis{9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethylxanthylium} C12-(branched and/or linear)-alkyl-(4-sulfonatophenoxy)benzenesulfonate and oxybis[C12-(branched and/or linear)-alkyl-benzenesulfonate]
Details on test material:
- Name of test material (as cited in study report): Sepisol Fast Red SN
- Substance type: organic salt - UVCB
- Appearance/Physical state: Dark red powder
- Lot/batch No.:029244
- Stability under test conditions:stable
- Storage condition of test material: at ambient temperature

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Remarks on result:
other: not calculated but MMAD is likely to be less than 100 µm(migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.)
Percentile:
D90
Mean:
232.35 µm
Percentile:
D50
Mean:
59.69 µm
Percentile:
D10
Mean:
6.065 µm
Particle size distribution at different passages
Remarks on result:
other: not determined in this assay

Applicant's summary and conclusion

Conclusions:
The particles size distribution has been determined by laser diffraction. 90% of the particles size stands below 232.35 µm; 50% below 59.69 µm and 10% below 6.065µm. MMAD is expected to be less than 100 µm.

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