Registration Dossier
Registration Dossier
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EC number: - | 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:
- May/2018
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Non GLP, non guideline, experimental study, limitations in design and/or reporting but otherwise adequate for assessment.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Test method: Laser diffraction technique
Laser diffraction measures particle size distributions by measuring the angular variation in intensity of light scattered as a laser beam passes through a dispersed particulate sample. Large particles scatter light at small angles relative to the laser beam and small particles scatter light at large angles. The angular cattering intensity data is then analyzed to calculate the size of the particles responsible for creating the scattering pattern, using the Mie theory of light scattering. The particle size is reported as a volume equivalent sphere diameter.
Procedure
Sample is dispersed in deionized water/Na4P2O7 with ultrasound for 60 seconds. Dispersion is radiated with laser light, which is scattered by particles. Angles and intensities of scattered light are measured, analyzed and particles diameter is calculated by the instruments software. - GLP compliance:
- not specified
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- counted distribution
Test material
- Reference substance name:
- Amorphous boron lithium zinc tellurite
- Molecular formula:
- Not applicable as UVCB
- IUPAC Name:
- Amorphous boron lithium zinc tellurite
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D10
- Mean:
- 0.41 µm
- Remarks on result:
- other: Standard deviation not reported
- Percentile:
- D50
- Mean:
- 1.04 µm
- Remarks on result:
- other: Standard deviation not reported
- Percentile:
- D90
- Mean:
- 2.18 µm
- Remarks on result:
- other: Standard deviation not reported
Any other information on results incl. tables
Information on passage was not available.
Applicant's summary and conclusion
- Conclusions:
- D50 of tested sample "Bismuth lead tellurium tungsten containing amorphous frits" measured by laser diffraction was 1.04 micrometers.
- Executive summary:
D50 of tested sample "Bismuth lead tellurium tungsten containing amorphous frits" measured by laser diffraction was 1.04 micrometers.
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