Registration Dossier
Registration Dossier
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EC number: 273-761-1 | CAS number: 69012-64-2 Amorphous silicon dioxide particles from the volatilization and vaporization of furnace feed materials in the manufacture of ferrosilicon and silicon.
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: data from manufacturer
Data source
Reference
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 2 014
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- data from litterature (Tech. datasheet)
% retained on 45 micron sieve - GLP compliance:
- not specified
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- Fumes, silica
- EC Number:
- 273-761-1
- EC Name:
- Fumes, silica
- Cas Number:
- 69012-64-2
- Molecular formula:
- SiO2
- IUPAC Name:
- silanedione
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D50
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Remarks on result:
- other: < 1,0 % retained on 45 micron sieve.
Any other information on results incl. tables
< 1,0 % retained on 45 micron sieve.
Applicant's summary and conclusion
- Executive summary:
Primary silica fume particles are in the size range of 0.02 - 1.0 µm (average particle size 0.15 µm). During collection, cooling and bagging, primary silica fume particles form larger agglomerates, i.e. assemblies of particles attached to each others due to physical interaction (e.g., van der Waals forces).
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