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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:
From October, 4th to October 5th, 2016.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 1
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:
0.81 µm
St. dev.:
0.06
Key result
Percentile:
D50
Mean:
4.84 µm
St. dev.:
0.06
Key result
Percentile:
D90
Mean:
15.43 µm
St. dev.:
0.06
Key result
Percentile:
other: D4,3
Mean:
6.6 µm
St. dev.:
0.06
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

D10

0.81

0.83

0.83

0.80

0.80

0.81

D50

4.84

4.86

4.85

4.82

4.81

4.84

D90

15.60

15.50

15.47

15.30

15.27

15.43

D4,3 *

6.67

6.63

6.62

6.55

6.53

6.60

Standard deviation [μm]

0.06

Relative standard deviation [%]

0.91

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

Conclusions:
The average particle size results for the test item are: D10 = 0.81 µm, D50 = 4.84 µm, D90 = 15.43 µm, D4,3 = 6.6 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), GLP study. The average particle size results for the test item are: D10 = 0.81 µm, D50 = 4.84 µm, D90 = 15.43 µm, D4,3 = 6.6 µm (Mass moment mean - De Brouckere Mean Diameter).

Description of key information

Key study. Method according to OECD 110, GLP study. The average particle size results for the test item are: D10 = 0.81 µm, D50 = 4.84 µm, D90 = 15.43 µm, D4,3 = 6.6 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), GLP study. The average particle size results for the test item are: D10 = 0.81 µm, D50 = 4.84 µm, D90 = 15.43 µm, D4,3 = 6.6 µm (Mass moment mean - De Brouckere Mean Diameter).