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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Qualifier:
no guideline followed
Principles of method if other than guideline:
Test material was sieved in an alpine air jet sieving machine.
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:
< 45 µm
Distribution:
ca. 50 %
Conclusions:
The substance is considered to pose an inhalation risk (as a significant number of particles are present at <100µm in diameter).
This study is considered to be appropriate and reliable for use as a key study in accordance with Regulation (EC) No. 1907/2006 (REACH). No further testing is required.

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).