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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 458-880-0 | CAS number: -
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:
- 29 May 2003 to 28 August 2003
- 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 - Method A: Particle Size Distribution (effective hydrodynamic radius)
- Version / remarks:
- May 1981
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- electrical sensing zone (e.g. Coulter) method
- Type of distribution:
- mass based distribution
- No.:
- #1
- Size:
- > 2 - < 200 µm
- Distribution:
- 93.8 %
- No.:
- #2
- Size:
- >= 200 µm
- Distribution:
- 0 %
- No.:
- #3
- Size:
- <= 2 µm
- Distribution:
- 6.2 %
- Conclusions:
- The proportion of particles with an aerodynamic diameter less than 10 μm is 25 %.
Reference
Developmental work indicated that the entire particle size range would be covered by using the 30 μm and 140 μm orifice tubes.
The test substance had a particle size distribution between 0.7 and 79 μm equivalent spherical diameter.
The pH of the electrolyte was 5.38 at a temperature of ca 24 °C.
When observed under a microscope, the test substance appeared to be rectangular crystals and exhibited a large variation in size.
Description of key information
The proportion of particles with an aerodynamic diameter less than 10 μm is 25 % (OECD guideline 110).
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.
