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Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
June 2014
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Well conducted study and sufficient information provided, however, no reference made to guideline and no guideline report available. No data available on GLP compliance.

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2015
Report date:
2014

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
not specified
Principles of method if other than guideline:
Microtrac

Measurement information:
- Run Number: Average of 3 runs
- Serial number: S4503
- Sample Call ID: 1397
- Above residual: 0.00
- Below residual: 0.00
- Loading factor: 0.0196
- Transmission: 0.918
- RMS Residual %: 0.491%

SOP information:
- Setzero time: 10 sec
- RunTime: 30 sec
- Run Number: Average of 3 runs
- Multi-run delay: 0 min
- Delay first measurement: Disabled
- Refractive index: 1.33
- Filter: enabled
- Analysis Gain: 2
- Analysis mode: S3000 / 3500
- Progression: Geometric Root 8
- Distribution: Volume
- Upper edge: 2000
- Lower edge: 0.0215
- Residuals: Enabled
GLP compliance:
not specified
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
Strontium zirconium trioxide
EC Number:
234-847-4
EC Name:
Strontium zirconium trioxide
Cas Number:
12036-39-4
Molecular formula:
SrZrO3
IUPAC Name:
strontium zirconium trioxide
Test material form:
solid: particulate/powder
Details on test material:
- Name of test material (as cited in study report): Sr Zirkonat
- Molecular formula (if other than submission substance): SrZrO
- Lot/batch No.: W 3342 / A-50955

Results and discussion

Particle sizeopen allclose all
Key result
Percentile:
D10
Mean:
0.255 µm
Remarks on result:
other: SD not reported
Key result
Percentile:
D50
Mean:
3.56 µm
Remarks on result:
other: SD not reported
Key result
Percentile:
D90
Mean:
7.23 µm
Remarks on result:
other: SD not reported

Any other information on results incl. tables

Results of Microtrac run (tabular data):

SIZE (µm) %PASS  %CHAN 
22.00 100 0.14
20.17 99.86 0.20
18.50 99.66  0.22 
16.96 99.44  0.26 
15.56 99.18  0.32 
14.27 99.86  0.40 
13.08 98.46  0.50 
12.00 97.98  0.65 
11.00 97.31  0.84 
10.09 96.47  1.10 
     
 0.1330 0.39 0.39 
 0.1220 0.00  0.00 

MV (Mean diameter in microns of the “volume distribution”): 3.8 µm

MN (Mean diameter, in microns, of the “number distribution"): 0.19 µm

MA (Mean diameter, in microns, of the “area distribution”): 0.96 µm

CS - Calculated surface: 6.25 M2 /cc

SD – Standard Deviation: 2.85

Mz – Graphic Mean: 3.4

Ski – Inclusive Graphic Skewness: 2.766

KG - Kurtosis (peakedness) of a distribution: 0.963

Applicant's summary and conclusion

Conclusions:
The median particle size (D50) was determined to be 3.56 µm, whereas the D10 and D90 were determined to be 0.255 and 7.23 µm, respectively