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Physical & Chemical properties

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:
31 October 2019 - 04 November 2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: the test substance was phlegmatized (15 mass% water addition) for the time of transportation. Before the study performance, the sample was dried at room temperature under vacuum conditions until a constant mass was obtained.
Key result
Percentile:
other: D[4,3] – Mass Moment Mean – De Brouckere Mean Diameter
Mean:
579.34 µm
St. dev.:
15.98
Key result
Percentile:
D10
Mean:
151.04 µm
Remarks on result:
other: St. dev. not specified.
Key result
Percentile:
D50
Mean:
562.72 µm
Remarks on result:
other: St. dev. not specified.
Key result
Percentile:
D90
Mean:
1 028.76 µm
Remarks on result:
other: St. dev. not specified.

Table 1. Results of particle size distribution

Particles size

Test number and fraction size[µm]

1

2

3

4

5

Average

 

d10[µm]

154.8

151.0

151.3

150.1

148.0

151.04

d50[µm]

588.8

538.7

571.7

560.2

554.2

562.72

d90[µm]

1072

1045

1021

1010

995.8

1028.76

* d4,3, [µm]

600.5

589.7

577.3

568.4

560.8

579.34

Average d43, [µm]

579.34

Standard deviation, [µm]

15.98

Relative Standard Deviation, [%]

2.76%

* Average d43, [µm] – The mass moment mean (De Brouckere Mean Diameter)

Conclusions:
The average particle size results for the test item are: D10 = 151.04 µm, D50 = 562.72 µm, D90 = 1028.76 µm, D4,3 = 579.34 µm.
Executive summary:

The determination of particle size distribution was carried out in accordance with CIPAC MT 187 - Particle size analysis by laser diffraction / ISO 13320 (GLP study). The test consisted in passing a laser through a test substance suspension and measuring the light scattered at different angles by a multi-element detector. The average particle size results for the test item are: D10 = 151.04 µm, D50 = 562.72 µm, D90 = 1028.76 µm, D4,3 = 579.34 µm (Mass moment mean - De Brouckere Mean Diameter).

Description of key information

Key study: Method according to CIPAC MT 187 / ISO 13320 (GLP study). The average particle size results for the test item are: D10 = 151.04 µm, D50 = 562.72 µm, D90 = 1028.76 µm, D4,3 = 579.34 µm (Mass moment mean - De Brouckere Mean Diameter).

Additional information