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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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well documented study report which meets basic scientific principles

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report Date:
2009

Materials and methods

Principles of method if other than guideline:
sieving (150µm, 860µm, 1500µm)
analysis by electron microscope (SEM) and light microscope (SM)
Data evaluation sieve fraction < 150 µm is according to OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions); Methode B
GLP compliance:
no
Type of distribution:
counted distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): Pthalimide, Technical in Flakes
- Physical state: solid, Flakes
- Analytical purity: 99.8 % (GC)

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
other: 0.8 % (w/W)
Mean:
< 150 µm
Percentile:
other: 9.1 % (W/W)
Mean:
>= 150 - <= 860 µm
Percentile:
other: 21.6 % (W/W)
Mean:
>= 860 - <= 1 500 µm
Percentile:
other: 68.5 % (W/W)
Mean:
> 1 500 µm

Any other information on results incl. tables

Table 1. Result particle size distribution

Fraction

w/w %

Dmin [µm]

Dmax [µm]

Dmean [µm]

< 150 µm

0.8

9.1

225.1

80.2

150 -860 µm

9.1

109.8

947.2

364.1

860 ¿ 1500 µm

21.6

768.1

3802.2

1554.6

> 1500

68.1

582.1

10171.2

2804.4

 

Result aspect ratio ( A= maximum length/ width)

 

Fraction

w/w %

Amin

max

Amean

< 150 µm

0.8

1.09

7.93

1.96

150 -860 µm

9.1

1.06

6.23

1.75

860 ¿ 1500 µm

21.6

1.08

3.51

1.66

> 1500

68.1

1.03

3.76

1.58

 

Applicant's summary and conclusion

Executive summary:

Karbach A, 2009

Particle size distribution was analysed after sieving (150, 860 and 1500 µm).

The fraction of the sample (> 1500 µm) with a mean diameter of 2804.4 µm was 68,1 % (w/w).

The fraction of the sample (860 µm - 1500 µm) with a mean diameter of 1554.6 µm was 21.6 % (w/w).

The fraction of the sample (150 µm - 860 µm) with a mean diameter of 364.1 µm was 9.1 % (w/w).

The fraction of the sample (> 150 µm) with a mean diameter of 80.2 µm was 0.8 %(w/w).