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Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

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:
other: This study was selected as the key study because the information provided for the hazard endpoint is sufficient for the purpose of classification and labelling and/or risk assessment.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report Date:
2013

Materials and methods

Principles of method if other than guideline:
Particle size distribution was determined by LASER diffraction using a HELOS Particle Size Analyser.
GLP compliance:
no
Type of distribution:
other: LASER diffraction

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Purity: 99.9%

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
0.71 µm
Percentile:
D50
Mean:
2.03 µm
Percentile:
D90
Mean:
24.11 µm

Any other information on results incl. tables

The physical state of the test substance at 20°C and 101.3 kPa is determined to be a light yellowish crystalline powder at visual examination. Microscopy examination showed the crystals to appear as needle-shaped crystals with a tendency to form agglomerates.

 

Particle size distribution by percentile

X10µm

X50µm

X90µm

0.71

2.03

24.11

Applicant's summary and conclusion

Conclusions:
This study and the conclusions which are drawn from it fulfil the quality criteria (validity, reliability, repeatability).
Particle distribution by percentile: D10 - 0.71, D50 - 2.03 and D90 - 24.11 µm
Executive summary:

Particle size distribution was determined by laser diffraction using a HELOS Particle Size Analyser. The particle sizes at the 10th , 50th, and 90th percentiles were, respectively, 0.71, 2.03 and 24.11 µm.