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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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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:
guideline study without detailed documentation
Qualifier:
equivalent or similar to guideline
Guideline:
other: wire-mesh sieve method
Principles of method if other than guideline:
A 140 wire mesh screen was used to determine the approximate % of the test substance passing through following agitation for 5 minutes.
GLP compliance:
no
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
mass based distribution
Specific details on test material used for the study:
Substance ID: STB
Type of Material: Reported as "representative" sample of the material
Mass median aerodynamic diameter:
< 105 µm
Key result
Percentile:
D50
Mean:
< 105 µm
Remarks on result:
not determinable because of methodological limitations
Remarks:
No St. dev. was determined
Conclusions:
The mass median aerodynamic diameter was determined to be <105 microns.
Executive summary:

In a non-GLP, non-guideline study, the test material was placed on a 140 wire mesh sieve and agitated for 5 minutes to determine the approximate weight % of the substance passing through the sieve. Based on this test, it was determined that the mass median aerodynamic diameter of the substance was < 105 microns.

Description of key information

The mass median aerodynamic diameter is <105 microns.

Additional information