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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Remarks:
Study is not conducted to GLP or guideline, but is conducted to acceptable methodlogical and scientific standards. Method used is subject to quality control assessment.
Qualifier:
no guideline followed
Principles of method if other than guideline:
The determination of particle size was made by a screening process with a specific mesh size in an air jet made by subpressure.
GLP compliance:
no
Type of method:
sieving
Type of distribution:
volumetric distribution
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
No.:
#1
Size:
< 100 µm
Distribution:
> 90 %

No data.

Conclusions:

The particle size distribution shows that >90% of particles were < 100µm in diameter. Therefore, the Particle size distribution indicates substance is an inhalation risk (a significant proportion of the particles are present at < 100 µm).
This study is considered to be scientifically justified for use as a key study.

Description of key information

One key study exists. This study is considered to be scientifically justified for use as a key study. 

Additional information

Particle size distribution indicates the substance is an inhalation risk (a significant proportion of the particles are present at < 100 µm).