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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:
November 24, 2016 - November 28, 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions) - Method B: Fibre Length and Diameter Distributions
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
ISO 13320- 1
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187
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:
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature
- Stability under test conditions: yes
Key result
Percentile:
D10
Mean:
ca. 108.1 µm
St. dev.:
3.04
Key result
Percentile:
D50
Mean:
ca. 307.58 µm
St. dev.:
4.47
Key result
Percentile:
D90
Mean:
ca. 565.14 µm
St. dev.:
7.62
Key result
Percentile:
other: D4,3
Mean:
ca. 325.18 µm
St. dev.:
4.79
Remarks on result:
other: Mass moment mean

Table no. 1. Results of particle size distribution

Particles size

1

2

3

4

5

Average

[µm]

d10

113.40

107.60

107.10

106.60

105.80

108.10

d50

314.50

309.40

306.00

304.60

303.40

307.58

d90

575.10

569.10

565.30

561.10

555.10

565.14

* d4,3,[µm]

332.50

326.80

324.10

322.60

319.90

325.18

Average d43, [µm]

325.18

Standard deviation, [µm]

4.79

Relative Standard Deviation, [%]

1.47

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

Conclusions:
The average particle size for the test item are: D10=108.10 µm, D50=307.58 µm, D90=565.14 µm, D4,3=325.18 μm (Mass moment mean - Brouckere Mean Diameter).
Executive summary:

The particle size of the tested substance was determined using a Coulter  LS 13 320. The method used was in accordance with OECD guideline 110, CIPAC MT 187 and ISO 13320- 1, following GLP. The volumetric particle size distribution using the laser scattering method was recorded. The average particle size for the test item are: D10=108.10 µm, D50=307.58 µm, D90=565.14 µm, D4,3=325.18 μm (Mass moment mean - Brouckere Mean Diameter).

Description of key information

Key study: OECD 110. GLP study. The average particle size for the test item are: D10=108.10 µm, D50=307.58 µm, D90=565.14 µm, D4,3=325.18 μm (Mass moment mean - Brouckere Mean Diameter).

Additional information

Key study: Study in accordance with OECD guideline 110, with GLP. The volumetric particle size distribution using the laser scattering method with Coulter  LS 13 320 was recorded. The average particle size for the test item are: D10=108.10 µm, D50=307.58 µm, D90=565.14 µm, D4,3=325.18 μm (Mass moment mean - Brouckere Mean Diameter).