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EC number: 205-741-5 | CAS number: 149-45-1
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 7 Feb 2017
- 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:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
- Deviations:
- not specified
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Mainzer Straße 80 D65189 Wiesbaden, Germany
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- Disodium 4,5-dihydroxybenzene-1,3-disulphonate
- EC Number:
- 205-741-5
- EC Name:
- Disodium 4,5-dihydroxybenzene-1,3-disulphonate
- Cas Number:
- 149-45-1
- Molecular formula:
- C6H6O8S2.2Na
- IUPAC Name:
- disodium 4,5-dihydroxybenzene-1,3-disulphonate
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Key result
- Percentile:
- D10
- Mean:
- 14.2 µm
- Remarks on result:
- other: std. dev. not available
- Key result
- Percentile:
- D50
- Mean:
- 37.7 µm
- Remarks on result:
- other: std. dev. not available
- Key result
- Percentile:
- D90
- Mean:
- 80.8 µm
- Remarks on result:
- other: std. dev. not available
Any other information on results incl. tables
Individual Results
Two test series of 3 measurements each were performed with the test item.
Test series 1 :
D10: 14.1 µm
D50: 37.8 µm (Median diameter)
D90: 81.4 µm
Test series 2 :
D10: 14.2 µm
D50: 37.6 µm (Median diameter)
D90: 80.1 µm
Average:
D10: 14.2 µm
D50: 37.7 µm (Median diameter)
D90: 80.8 µm
Final Results
The test item AF-378 has a median particle size of D50 = 37.7 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981), ISO 13320 (2009) and EPA OCSPP Guideline 830.7520 (1996).
Applicant's summary and conclusion
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