Registration Dossier
Registration Dossier
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EC number: 451-000-6 | CAS number: -
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)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 13320:2009
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
- Principles of method if other than guideline:
- Most appropriate test and material parameters:
Dispersant: silicone oil
Dispersion Speed: 1200 rpm
Refractive index (sample): 0 AU
Analysis Model: General Purpose (Normal)
Particle size range: 0.02µm - 2000µm - GLP compliance:
- yes (incl. QA statement)
- Type of distribution:
- other: laser diffraction analysis
Test material
- Details on test material:
- Due to the powder containing small particulates, which associated into clusters and lumps, it was deemed not possible to successfully disperse them in air without causing small particle fractures. The analysis was therefore carried out using the 'wet', small volume dispersion system. Several solvents were tried, in order to determine a suitable medium that provided maximum dispersability, but with minimum solubility. Silicone oil was finally seelcted as the most suitable dispersant.
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D50
- Mean:
- 392.707 µm
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Percentile:
- other: 10% of the material
- Mean:
- < 20.492 µm
- Percentile:
- other: 50% of the material
- Mean:
- < 361.516 µm
- Percentile:
- other: 90% of the material
- Mean:
- < 687.567 µm
- Percentile:
- other: 5.0% of the material
- Mean:
- < 10 µm
Any other information on results incl. tables
The substance was analysed in the as received condition to reduce the risk of primary particle fractures. As a result the distribution from the laser diffraction analyzer details two peaks: one being the the individual particles and the other the agglomerated particles. The microscope analysis indicates that the largest peak is believed to be particle agglomerations whereas the smaller peak is the primary particles.
5% by volume of sample was seen to be <10µm.
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
