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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
guideline study with acceptable restrictions
Justification for type of information:
Study appears to be well performed, but limited details on methods.
Qualifier:
no guideline followed
Principles of method if other than guideline:
Microscopic analysis: Microscope – Axioskop 2, maximal magnitude 640x, equipped in Axio Vision software for measurements and calculations
GLP compliance:
not specified
Type of method:
microscopic examination
Type of particle tested:
primary particle
Mass median aerodynamic diameter:
>= 11.34 - <= 161.73 µm
Geometric standard deviation:
26.57
Percentile:
D50
Mean:
>= 11.84 - <= 171.29 µm
St. dev.:
29.57
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Conclusions:
Mass median diameter: 51.38µmMass median aerodynamic diameter: 47.04µmGeometric standard deviation:0.06Particle sizePercentile: np. D10 Mean: 26.74% ; D90 Mean : 97.62% Std. dev: 29.57µm

Description of key information

Fine crystals: 
range:  Length: from 7.9 to 147.6 µm, mean:  41.9µm;
            Diameter: from 11.8 to 171.3 µm ,  mean: 57.9 µm

Additional information