Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 485-320-2 | CAS number: 221667-31-8
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 59: Sieve Analysis
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
- Principles of method if other than guideline:
- Laser Diffraction
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
- Percentile:
- D10
- Mean:
- 1.9 µm
- Remarks on result:
- other: Standard deviation not reported
- Percentile:
- D50
- Mean:
- 6.7 µm
- Remarks on result:
- other: Standard deviation not reported
- Percentile:
- D90
- Mean:
- 13.6 µm
- Remarks on result:
- other: Standard deviation not reported
Reference
Laser Diffraction
The test item consists of a fine crystalline structure with bacillary form.
For each test series fractions (left axis of the ordinate) and the siftings (right axis of the ordinate) are presented in volume % as a function of the particle size.
The median particle size L50 (50 % of particle volume with lower particle diameter) deduced from these distributions was:
1st test series: L50 = 6.66 µm
2nd test series: L50 = 6.64 µm
The average of the median particle size L50 was 6.7 µm
The particle size L10 (10 % of particle volume with lower particle diameter) deduced from these distributions was:
1st test series: L10 = 1.92 µm
2nd test series: L10 = 1.93 µm
The average of the particle size L10 was 1.9 µm
The particle size L90 (90 % of particle volume with lower particle diameter) deduced from these distributions was:
1st test series: L90 = 13.67 µm
2nd test series: L90 = 13.57 µm
The average of the particle size L90 was 13.6 µm
Description of key information
L10: 1.9 µm
L50: 6.7 µm (median particle size)
L90: 13.6 µm
(OECD 110 and CIPAC MT 187, Laser Diffraction)
Additional information
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.
