Magnesium titanate

Particle size distribution (Granulometry)

Administrative data

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

November 27, 2017

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

The particle size distribution of the material was measured via a light scattering method using a Mastersizer 2000E with a Hydro 2000MU (A) dispersion unit v5.60 (Malvern Instruments Ltd., Serial No. MAL102043). See instrument User Manual.

GLP compliance:

no

Type of method:

Laser scattering/diffraction

Type of distribution:

volumetric distribution

Test material

Test material information

Constituent 1

Reference substance name:

Calcium titanium trioxide

EC Number:

234-988-1

EC Name:

Calcium titanium trioxide

Cas Number:

12049-50-2

Molecular formula:

Ca.O3Ti

IUPAC Name:

Calcium titanium trioxide

Test material form:

solid: particulate/powder

Results and discussion

Particle size

Particle size 1

Percentile:

D10

Mean:

1.611 µm

Remarks on result:

other: St. dev. not provided

Particle size 2

Key result

Percentile:

D50

Mean:

3.439 µm

Remarks on result:

other: St. dev. not provided

Particle size 3

Percentile:

D90

Mean:

7.309 µm

Remarks on result:

other: St. dev. not provided

Any other information on results incl. tables

100 % of calcium titanate particles were within a distribution range of 0.8 to 208.9 μm. Surface Weighted Mean (D(3,2) = 2.930 μm and Volume Weighted Mean D(4,3) = 4.916 μm.

Applicant's summary and conclusion

Conclusions:

The median particle size of the sample of calcium titanate, based on a volumetric size distribution, was determined to be D(0.5) = 3.439 μm. The light scattering data demonstrates that 100 % of particles are present in a distribution range of approximately 0.8 to 208.9 μm.

Executive summary:

The particle size distribution (granulometry) of a sample of calcium titanate (non nano) was calculated using a Mastersizer 2000E with a Hydro 2000MU (A) dispersion unit v5.60 (Malvern Instruments Ltd., Serial No. MAL102043). This technology uses a laser scattering technique to capture a light scattering pattern and generate a fundamental distribution of the size of particles in the sample, which is volume-based. Raw data is analysed / interpreted in line with the Fraunhofer model and Mie theory.

100 % of calcium titanate particles were found to exist in a distribution range of 0.8 to 208.9 μm, and the median particle size of the volume distribution or Mass Median Diameter (D(0.5)), which is the size in microns at which 50 % of the sample is smaller and 50 % is larger, was determined to be 3.439 μm. The Volume Weighted Mean (D(4,3)) and Surface Weighted Mean (D(3,2)) was calculated to be 2.930 and 4.916 μm, respectively. As the weighted residual was < 1 % (0.886 %), it can be decided that the calculated data was a good fit to the measurement data.