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Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
October 5th, 2016.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Deviations:
no
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
Qualifier:
according to
Guideline:
other: CIPAC MT 187
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Test material information:
Composition 1
Key result
Percentile:
D10
Mean:
0.54 µm
St. dev.:
0.028
Key result
Percentile:
D50
Mean:
1.78 µm
St. dev.:
0.028
Key result
Percentile:
D90
Mean:
6.44 µm
St. dev.:
0.028
Key result
Percentile:
other: D 4,3
Mean:
2.87 µm
St. dev.:
0.028
Remarks on result:
other: Mass moment mean (De Brouckere Mean Diameter)

Table 1. Results of particle size distribution.

Particle size

1

2

3

4

5

Average

(μm)

d10

0.55

0.54

0.55

0.53

0.54

0.54

d50

1.81

1.76

1.79

1.77

1.76

1.78

d90

6.43

6.40

6.51

6.43

6.44

6.44

d4,3

2.89

2.84

2.91

2.86

2.86

2.87

Standard deviation (μm)

0.028

Relative std. deviation (%)

0.43

 *Average d4,3: the mass moment mean (De Brouckere Mean Diameter)

Conclusions:
The average particle size results for the test item are: D10 = 0.54 µm, D50 = 1.78 µm, D90 = 6.44 µm, D4,3 = 2.87 µm.
Executive summary:

The particle size distribution for the test substance was determined according to OECD 110 / CIPAC MT 187 - Particle size analysis by laser diffraction (ISO 13320 -1). The average particle size results for the test item are: D10 = 0.54 µm, D50 = 1.78 µm, D90 = 6.44 µm, D4,3 = 2.87 µm (Mass moment mean - De Brouckere Mean Diameter).

Description of key information

Key study: Method according to OECD 110 / CIPAC MT 187 - Particle size analysis by laser diffraction (ISO 13320 -1), GLP study. The average particle size results for the test item are: D10 = 0.54 µm, D50 = 1.78 µm, D90 = 6.44 µm, D4,3 = 2.87 µm.

Additional information

The particle size distribution for the test substance was determined according to OECD 110 / CIPAC MT 187 - Particle size analysis by laser diffraction (ISO 13320 -1). The average particle size results for the test item are: D10 = 0.54 µm, D50 = 1.78 µm, D90 = 6.44 µm, D4,3 = 2.87 µm (Mass moment mean - De Brouckere Mean Diameter).