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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:
2010-04-16
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study reliable without restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: ISO13320-1: Particle Size Analysis - Laser Diffraction Methods
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
signed, 2009-10-29
Type of distribution:
volumetric distribution

Test material

Constituent 1
Reference substance name:
123334-00-9
Cas Number:
123334-00-9
IUPAC Name:
123334-00-9
Constituent 2
Chemical structure
Reference substance name:
Titanium oxide sulphate
EC Number:
237-523-0
EC Name:
Titanium oxide sulphate
Cas Number:
13825-74-6
Molecular formula:
O5STi
IUPAC Name:
titanium oxide sulphate
Details on test material:
- Name of test material (as cited in study report): Titanium(IV)oxysulfate – sulphuric acid hydrate
- Molecular formula (if other than submission substance): TiOSO4 * x H2SO4 * x H2O
- Substance type: White solid
- Storage condition of test material: Ambient temperature, dry, tightly closed

No further details were stated.

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
44.87 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
10.99 µm
St. dev.:
0.17
Percentile:
D50
Mean:
44.87 µm
St. dev.:
0.1
Percentile:
D90
Mean:
148.37 µm
St. dev.:
3.85

Any other information on results incl. tables

Individual Results

The determination of the particle size distribution by laser diffraction was done with test item without sieving. Distributions D50:

1sttest series:               D50 = 44.80 µm

2ndtest series:              D50 = 44.94 µm

Distributions D10:

1sttest series:               D10 = 10.87 µm

2ndtest series:              D10 = 11.11 µm

Distributions D90:

1sttest series:               D90 = 151.09 µm

2ndtest series:              D90 = 145.64 µm

Applicant's summary and conclusion

Conclusions:
The median particle size D50 of the test items deduced from the particle size distributions is 44.87 µm.
Executive summary:

The purpose of the study was to determine the particle size distribution of test item titanium(IV)oxysulfate – sulphuric acid hydrate - (molecular formula TiOSO4 x H2SO4 x H2O; CAS No. 123334 -00 -9). The study followed the protocol as given by OECD Guideline 110.

The median particle size D50 of the test item deduced from the particle size distributions is 44.87 µm.

The particle size D10 of the test item deduced from the particle size distributions is 10.99 µm.

The particle size D90 of the test item deduced from the particle size distributions is 148.37 µm.