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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 September 20th to September 22nd, 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:
2.22 µm
St. dev.:
0.2
Key result
Percentile:
D50
Mean:
11.96 µm
St. dev.:
0.2
Key result
Percentile:
D90
Mean:
48.08 µm
St. dev.:
0.2
Key result
Percentile:
other: D4,3
Mean:
19.92 µm
St. dev.:
0.2

Table 1. Results of particle size distribution.

Particle size [µm]

1

2

3

4

5

Average

d10

2.22

2.23

2.18

2.26

2.21

2.22

d50

12.14

12.02

11.96

11.85

11.84

11.96

d90

48.66

47.96

48.52

47.22

48.06

48.08

* d4,3 [µm]

20.15

19.91

20.07

19.63

19.85

19.92

Average d4,3 [µm]

19.92

Standard deviation [µm]

0.20

Relative Standard Deviation [%]

1.00

* Average d4,3, [µm] – The mass moment mean (De Brouckere Mean Diameter)

Conclusions:
The average particle size results for the test item are: D10 = 2.22 µm, D50 = 11.96 µm, D90 = 48.08 µm, D4,3 = 19.92 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: The average particle size results for the test item are: D10 = 2.22 µm, D50 = 11.96 µm, D90 = 48.08 µm, D4,3 = 19.92 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 = 2.22 µm, D50 = 11.96 µm, D90 = 48.08 µm, D4,3 = 19.92 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:The average particle size results for the test item are: D10 = 2.22 µm, D50 = 11.96 µm, D90 = 48.08 µm, D4,3 = 19.92 µm(Mass moment mean - De Brouckere Mean Diameter).