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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
Study period:
2016-12-21
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: CIPAC Handbook Volume K: Analysis of Technical and Formulated Pesticides, CIPAC MT 187
Version / remarks:
2003
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
other: particle volume or particle mass

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Details on test material:
- Appearance: solid yellow powder

Results and discussion

Particle sizeopen allclose all
Key result
Percentile:
D50
Mean:
2.12 µm
St. dev.:
0.03
Remarks on result:
other: mean of two measurements
Percentile:
D10
Mean:
0.73 µm
St. dev.:
0.005
Remarks on result:
other: mean of two measurements
Percentile:
D90
Mean:
11.33 µm
St. dev.:
0.003
Remarks on result:
other: mean of two measurements

Any other information on results incl. tables

Particle Size Distribution:

 

Measurement 1

[µm]

Measurement 2

[µm]

Average

[µm]

L10D(v, 0.1)

0.736

0.729

0.73

L50D(v, 0.5)

2.142

2.100

2.12

L90D(v, 0.9)

11.337

11.332

11.33

Applicant's summary and conclusion

Conclusions:
The L10 D (v, 0.1) was determined to be 0.73 µm, the L50 D (v, 0.5) was determined to be 2.12 µm and the L90 D (v, 0.9) was determined to be 11.33 µm.
Executive summary:

The particle size distribution was determined using the laser diffraction method with wet dispersion. The particle size distribution of test item was determined following CIPAC MT 187.

Two measurements were performed. The following results were obtained: L10D (v, 0.1) = 0.73 µm, L50D (v, 0.5) = 2.12 µm and the L90D (v, 0.9) = 11.33 µm.