Iron cobalt black spinel

Particle size distribution (Granulometry)

Administrative data

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)

Principles of method if other than guideline:

Laser diffraction method according to ISO 13320

GLP compliance:

yes (incl. QA statement)

Type of method:

Laser scattering/diffraction

Type of distribution:

volumetric distribution

Test material

Test material information

Constituent 1

Reference substance name:

Iron cobalt black spinel

EC Number:

269-102-2

EC Name:

Iron cobalt black spinel

Cas Number:

68187-50-8

Molecular formula:

CoFe2O4

IUPAC Name:

Iron cobalt spinel

Specific details on test material used for the study:

- Chemical Identity: Iron cobalt black spinel
- CAS: 68187-50-8
- Batch: 16/0432-1, Lab-sample from Sept. 2016
- Date of production: Sept. 2016

Results and discussion

Particle size

Particle size 1

Percentile:

D10

Mean:

6 µm

Remarks on result:

other: no standard deviation available

Particle size 2

Percentile:

D50

Mean:

471 µm

Remarks on result:

other: no standard deviation available

Particle size 3

Percentile:

D90

Mean:

1 323 µm

Remarks on result:

other: no standard deviation available

Particle size 4

Percentile:

other: D[3,2]

Mean:

18 µm

Remarks on result:

other: no standard deviation available

Particle size 5

Percentile:

other: D[4,3]

Mean:

548 µm

Remarks on result:

other: no standard deviation available

Particle size distribution at different passages

Particle size distribution at different passages 1

No.:

#1

Size:

< 4 µm

Distribution:

6.06 %

Particle size distribution at different passages 2

No.:

#2

Size:

< 10 µm

Distribution:

17.89 %

Particle size distribution at different passages 3

No.:

#3

Size:

< 100 µm

Distribution:

36.06 %

Any other information on results incl. tables

Results in detail

Fine fraction <2 mm: 64.7 g/100 g

Measured mean particle size distribution of the fine fraction:

measurement	d(0.1) [μm]	d(0.5) [μm]	d(0.9) [μm]	D[3,2] [μm]	D[4,3] [μm]
1	5	281	1141	13	425
2	9	656	1435	29	671
mean*	6	471	1323	18	548

 

measurement	<4 μm [vol%]	<10 μm [vol%]	<100 μm [vol%]
1	8.11	24.43	46.28
2	4.04	11.34	25.83
mean*	6.06	17.89	36.06

 

*) Using all single measuring points from the measurements 1 and 2, a new distribution was calculated, giving the mean values for each parameter.

D[3,2): mean by surface (Sauter)

D[4,3): mean by volume (De Brouker)