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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 22, 2016 - November 25, 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 A: Particle Size Distribution (effective hydrodynamic radius)
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
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
Percentile:
D10
Mean:
ca. 86 µm
St. dev.:
2.86
Key result
Percentile:
D50
Mean:
ca. 232.9 µm
St. dev.:
3.89
Percentile:
D90
Mean:
ca. 411.4 µm
St. dev.:
6.06
Key result
Percentile:
other: d4,3
Mean:
ca. 253.26 µm
St. dev.:
3.82
Remarks on result:
other: * Average d4,3 [μm] – The mass moment mean (De Brouckere Mean Diameter)

Table no. 1 . Results of particle size distribution

 Particles Size  1 [μm]  2 [μm]  3 [μm]  4 [μm]  5 [μm]  Average [μm]
 d10  90.84 83.71  86.22  84.84   86.00  86.00
 d50  239.34 229.5  233.4  231.36  230.9  232.90 
 d90  460.5 445.4  453.3  450.8  446.5  411.40 
 * d4,3, [μm]  259.4 249.5  254.1  252.2  251.1 253.26 
 Average d43, [μm]                  253.26
 Standard deviation, [μm]                  3.82
 Relative Standard Deviation, [%]                  1.51

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

Conclusions:
The particle size average is 232.9 μm (D50), The mean D10 is 86 μm, the mean D90 is 411.4 μm and the mass moment mean is 253.26 μm.
Executive summary:

The particle size analysis test was performed in according to OECD guideline 110 with GLP. A representative sample of the tested material was dispersed at an adequate concentration in a suitable liquid. Using the Laser scattering/diffraction method, the evaluation of particle size distribution was conducted. The particle size average is 232.9 μm (D50), The mean D10 is 86 μm, the mean D90 is 411.4 μm and the mass moment mean is 253.26 μm.

Description of key information

Key study: Test method OECD 110. GLP study. The particle size average is 232.9 μm (D50), The mean D10 is 86 μm, the mean D90 is 411.4 μm and the mass moment mean is 253.26 μm.

Additional information

Key Study: The particle size analysis test was performed in according to OECD guideline 110 with GLP. A representative sample of the tested material was dispersed at an adequate concentration in a suitable liquid. Using the Laser scattering/diffraction method, the evaluation of particle size distribution was conducted. The particle size average is 232.9 μm (D50),The mean D10 is 86 μm, the mean D90 is 411.4 μm and the mass moment mean is 253.26 μm.