Frits, chemicals and bismuth oxide

Particle size distribution (Granulometry)

Administrative data

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

08 Dec 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: CIPAC MT 187

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

Landesanstalt für Umwelt, Messungen und Naturschutz Baden-Württemberg, Karlsruhe, Germany

Type of method:

Laser scattering/diffraction

Type of particle tested:

primary particle

Type of distribution:

volumetric distribution

Test material

Test material information

Constituent 1

Reference substance name:

Frits, chemicals and bismuth oxide

EC Number:

947-960-5

Molecular formula:

Not applicable

IUPAC Name:

Frits, chemicals and bismuth oxide

Test material form:

solid

Results and discussion

Particle size

Particle size 1

Percentile:

D10

Mean:

0.565 µm

Remarks on result:

other: mean value of duplicate analysis.

Particle size 2

Percentile:

D50

Mean:

2.448 µm

Remarks on result:

other: mean value of duplicate analysis.

Particle size 3

Percentile:

D90

Mean:

6.718 µm

Remarks on result:

other: mean value of duplicate analysis.

Any other information on results incl. tables

Results

The dispersing pressure was adjusted to 3.0 bar and the feeding rate was set to 30 %. Three metal balls were used as sieving aid. The particle size distribution of Frits was determined using the laser diffraction method. The particle size distribution of Frits was determined following to CIPAC MT 187 in duplicate. Table 1 summarizes the results of the particle size distribution.

 

Table 1: Particle Size Distribution

Measurement	L10 D (v, 0.1) [µm]	L50 D (v, 0.5) [µm]	L90 D (v, 0.9) [µm]
1	0.560	2.434	6.698
2	0.569	2.461	6.737
Mean Value	0.565	2.448	6.718

Discussion and Conclusion

The particle size distribution was determined using the laser diffraction method with dry dispersion. The particle size distribution of Frits was determined following CIPAC MT 187. The dispersing pressure was adjusted to 3.0 bar and the feeding rate was 30 %. Three metal balls were used as sieving aid.

For the volume based particle size distribution the following results were obtained. The L10 D (v, 0.1) was determined to be 0.565 µm, the L50 D (v, 0.5) was determined to be 2.448 µm and the L90 D (v, 0.9) was determined to be 6.718 µm.