Registration Dossier
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EC number: 815-122-7 | CAS number: 1446013-08-6
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 26/09/2018-02/10/2018
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Non-GLP study
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187 2003
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Mean:
- 8.062 µm
- Remarks on result:
- other: Surface weighed Mean D [3,2]
- Mean:
- 17.693 µm
- Remarks on result:
- other: Volume weighed Mean D [4,3]
- Conclusions:
- The results are reported below:
Concentration: 0.0186 %Vol;
Span: 1.509,
Uniformity: 0.463;
Result units: Volume;
Specific surface area: 0.744 m2/g;
Surface weighed Mean D [3,2]: 8.062 μm;
Volume weighed Mean D [4,3]: 17.693 μm. - Executive summary:
The method describes the procedure for determining the granulometric distribution by laser diffractometry in different matrices. The laser diffraction technique is based on the principle that particles, passing through a laser beam, diffuse light at an angle that is related to their size. As the particle size decreases, the observed scattering angle increases logarithmically. The scattering intensity also depends on the particle size and decreases, with a good approximation, in relation to the surface of the particle cross-section. By simplifying, large particles spread light with narrow angles and high intensity, while small particles with wider angles and low intensities. The instrument is able to relate the scattering angle and intensity to the granulometric distribution of the material under examination.
The results are reported below:
Concentration: 0.0186 %Vol;
Span: 1.509,
Uniformity: 0.463;
Result units: Volume;
Specific surface area: 0.744 m2/g;
Surface weighed Mean D [3,2]: 8.062 μm;
Volume weighed Mean D [4,3]: 17.693 μm.
Reference
Description of key information
The results are reported below:
Concentration: 0.0186 %Vol;
Span: 1.509,
Uniformity: 0.463;
Result units: Volume;
Specific surface area: 0.744 m2/g;
Surface weighed Mean D [3,2]: 8.062 μm;
Volume weighed Mean D [4,3]: 17.693 μm.
Additional information
The method used is CIPAC MT 187 – Particle size analysis by laser diffraction
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