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EC number: 700-701-8 | CAS number: 798556-07-7
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 25.01.2016 - 11.02.2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Percentile:
- D10
- Mean:
- 16.8 µm
- St. dev.:
- 0.3
- Key result
- Percentile:
- D50
- Mean:
- 112 µm
- St. dev.:
- 0.55
- Percentile:
- D90
- Mean:
- 292.5 µm
- St. dev.:
- 0.15
- Conclusions:
- The median particle size D50 of the test item was 112.0 μm.
- Executive summary:
A study was conducted according to CIPAC MT 187 and ISO 13320 to determine the particle size distribution of the test item. The particle size distribution was determined using laser diffraction. Two test series were performed with the test item. The test has a median particle size D50 = 112.0 µm, which was determined by laser diffraction measurement.
Reference
The median particle size D50 (D (v, 0.5): 50 % of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1st test series: D50 = 112.5 µm
2nd test series: D50 = 111.4 µm
The average of the median particle size D50 was: D50 = 112.0 µm
The particle size D10 (D (v, 0.1): 10 % of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1st test series: D10 = 17.1 µm
2nd test series: D10 = 16.5 µm
The average of the particle size D10 was: D10 = 16.8 µm
The particle size D90 (D (v, 0.9): 90 % of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1st test series: D90 = 292.6 µm
2nd test series: D90 = 292.3 µm
The average of the particle size D90 was: D90 = 292.5 µm
The particle size distribution showed a monomodal distribution. The maximum was observed at approximately 200 µm and a shoulder at approximately 4 µm.
Description of key information
The median particle size D50 of the test item was 112.0 μm.
Additional information
A study was conducted according to OECD TG 110, OPPTS 830.7520 and ISO 13320 to determine the particle size distribution of the test item. The particle size distribution was determined using laser diffraction. Two test series were performed with the test item. The test has a median particle size D50 = 215.4 µm, which was determined by laser diffraction measurement (reference 4.5-1).
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