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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:
2017-07-12 - 2018-03-06
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
2009
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
Version / remarks:
1996
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Version / remarks:
1981
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
Version / remarks:
2009
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
Key result
Percentile:
D10
Mean:
73.9 µm
St. dev.:
6.12
Key result
Percentile:
D50
Mean:
294.4 µm
St. dev.:
14.18
Key result
Percentile:
D90
Mean:
684.3 µm
St. dev.:
6.12

Particle Size Distribution

Two test series of 3 measurements each were performed with the fine fraction of the test item.

 

Test series 1:

D10:      80.0 µm                                             Standard deviation: 2.48 µm

D50:      308.6 µm (Median diameter)            Standard deviation: 7.25 µm

D90:      690.4 µm                                           Standard deviation: 30.31 µm

 

Test series 2:

D10:      67.8 µm                                             Standard deviation: 2.58 µm

D50:      280.2 µm (Median diameter)     Standard deviation: 6.82 µm

D90:      678.2 µm                                           Standard deviation: 8.70 µm

 

Average

D10:      73.9 µm                                             Standard deviation: 6.12 µm

D50:      294.4 µm (Median diameter)     Standard deviation: 14.18 µm

D90:      684.3 µm                                           Standard deviation: 6.12 µm

Conclusions:
The test item CI Solubilised Sulphur Black 1 has a median particle size of D50 = 294 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981), ISO 13320 (2009) and EPA OCSPP Guideline 830.7520 (1996).
Executive summary:

Summary

The test item CI Solubilised Sulphur Black 1 has a median particle size D50 = 294 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981), ISO 13320 (2009) and EPA OCSPP Guideline 830.7520 (1996).

Description of key information

The test item Solubilised Sulphur Black 1 has a median particle size of D50 = 294 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981), ISO 13320 (2009) and EPA OCSPP Guideline 830.7520 (1996).

Additional information

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