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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August 2021
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline followed
Principles of method if other than guideline:
Particle size distribution determined using transmission electron microscopy (TEM)
GLP compliance:
no
Type of method:
microscopic examination
Remarks:
TEM images of substance used to build particle size distribution (PSD)
Type of particle tested:
primary particle
Type of distribution:
counted distribution
Key result
Percentile:
D50
Mean:
23.62 nm
St. dev.:
13.85
Remarks on result:
other: Minor axis
Key result
Percentile:
D50
Mean:
27.51 nm
St. dev.:
17.46
Remarks on result:
other: Major axis
Remarks on result:
other: Not applicable to this method
Conclusions:
The substance has a median (d(50)) size of 27.51 nm at the major axis and 23.62 nm at the minor axis.
Executive summary:

The particle size distribution of the substance was measured by TEM and found to have a median (d(50)) size of 27.51 nm at the major axis and 23.62 nm at the minor axis.

Description of key information

The particle size distribution of the substance was measured by TEM and found to have a median (d(50)) size of 27.51 nm at the major axis and 23.62 nm at the minor axis.

Additional information