Registration Dossier
Registration Dossier
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EC number: 946-103-2 | CAS number: -
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 01.01.2015 to 31.08.2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: in compliance w ith ISO 17025 and ISO 9001
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Laser scattering/diffraction method (CILAS), which is commonly used for inorganic powdery substances.
- GLP compliance:
- no
- Remarks:
- test methord accreditated
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
Test material
- Reference substance name:
- Calcium hydrosilicate, reaction product of natural quartz sand and technical lime by a hydrothermal and tribochemical process
- EC Number:
- 946-103-2
- IUPAC Name:
- Calcium hydrosilicate, reaction product of natural quartz sand and technical lime by a hydrothermal and tribochemical process
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material (as cited in study report): Celitement
- Chemical name: Calcium hydrosilicate
- Physical state: White powder
- pH-value: 10.5
- Expiration date of the lot/batch: 12/2015
- Stability under test conditions: Hydration reaction with water
- Storage condition of test material: Room temperature protected from light, in original container in evacuated desiccator
Constituent 1
Results and discussion
- Mass median aerodynamic diameter:
- ca. 16 µm
- Geometric standard deviation:
- ca. 5.74
Particle sizeopen allclose all
- Percentile:
- D50
- Mean:
- > 1 - < 70 µm
- Remarks on result:
- other: 80 % of the particles are covered by this particle size range (migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.)
- Percentile:
- D10
- Mean:
- ca. 1 µm
- St. dev.:
- 0.1
- Percentile:
- D50
- Mean:
- ca. 16 µm
- St. dev.:
- 1
- Percentile:
- D90
- Mean:
- ca. 72 µm
- St. dev.:
- 1.5
Any other information on results incl. tables
location parameter of RRSB x' = 23.71 µm
slope of RRSB n = 0.68
Applicant's summary and conclusion
- Conclusions:
- Celitement consists of fine particles in a range betw een 0 and 175 µm. About 80 % of the particles are in the range betw een 1.1 and 72 µm.
The respirable fraction comprises about 22 %.
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