Registration Dossier

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:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP Lab and determination with two systems

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1999
Report Date:
1999

Materials and methods

Principles of method if other than guideline:
Helios laser particle size detector and Rodos diffraction with dry dispersing system
GLP compliance:
yes (incl. certificate)
Remarks:
certified Lab using two methods
Type of distribution:
counted distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Charge GST7-18099

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
>= 250 - < 260 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
42.48 µm
Percentile:
D50
Mean:
255.44 µm
Percentile:
D90
Mean:
502.1 µm

Any other information on results incl. tables

Results

Focus-range 500 mm

1.      Measurement

2.      Measurement

Average

X10

42.58 µm

42.37 µm

42.48 µm

X50

265.19 µm

245.68 µm

255.44 µm

X90

504.65 µm

499.56 µm

502.11 µm

Applicant's summary and conclusion

Conclusions:
The particle size was determinated between 42.37 and 504.65 µm
Executive summary:

The Particle Size Distribution of the test substance Pyrazole DHE was measured 2 times by Helios laser diffraction with dry dispersing system Rodos. The average of 2 measurements are:

X10: 42.48 µm

X50: 255.44 µm

X90 502.1 µm