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Diss Factsheets

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:
April 24, 2013
Reliability:
1 (reliable without restriction)

Data source

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

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Qualifier:
according to guideline
Guideline:
other: CIPAC (Collaborative International Pesticide Analytical Council), Physico-chemical Methods for Technical and Formulated Pesticides, MT 187 “Particle size analysis by laser diffraction”
GLP compliance:
no
Type of distribution:
volumetric distribution

Test material

Constituent 1
Reference substance name:
Glycine max. (L.) Merr. (Fabacee) aqueous alcoholic ext., concentrate by sequential extractions and filtration
EC Number:
938-980-5
IUPAC Name:
Glycine max. (L.) Merr. (Fabacee) aqueous alcoholic ext., concentrate by sequential extractions and filtration
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
Test item identification : Soybean (Glycine max) dry purified extract
Active ingredient content : 100 % w/w (from the Test Substance Data Sheet (TSDS)
Batch number : 30432/M1

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:
6 µm
Percentile:
D50
Mean:
37.3 µm
Percentile:
D90
Mean:
86.1 µm

Any other information on results incl. tables

Table 1. Soybean (Glycine max) dry purified extract: particle size distribution by laser diffraction

Test No.

Dv 10 ( m)

Dv 50 ( m)

Dv 90 ( m)

% Volume under 50 μm

% Volume above 75 μm

1

6.05

37.6

86.4

64.38

15.56

2

6.07

37.6

86.6

64.44

15.57

3

5.89

36.8

85.3

65.47

14.84

Average

6.00

37.3

86.1

64.8

15.3

 

The interpolated results are expressed as percent of the total results under that size. This value is known as percentile. The results in Table 1 show the percentile sizes for 10% [Dv 10 (μm)], 50% [Dv 50 (μm)], 90% [Dv 90 (μm)], the percentile volume under 50 μm and the percentile volume above 75 μm. The 50% volume percentile is also known as the media of the volume distribution (in bold).

Applicant's summary and conclusion

Conclusions:
From the experimental data obtained according to CIPAC method MT 187 and OECD guideline No. 110, it can be concluded that 64.8% of the Soybean (Glycine max) dry purified extract sample presents a particle size lower than 50 um and 15.3% of test item was found above 75 um.