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Physical & Chemical properties

Particle size distribution (Granulometry)

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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: Not GLP but well documented

Data source

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

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: ISO 2591-1
Principles of method if other than guideline:
A dry sieving technique was applied to determine the particle size distribution of the test substance. Each trial was performed with around 100 g of substance. Nine metal wire sieves with calibrated meshes (4 750, 3 360, 2 380, 1 700, 1 190, 833, 600, 417 and 125 µm) were stacked and submitted to automatic vertical vibrations during 30 min. Each sieve was weighed before and after sieving. Three replicates were performed according to GRAN-94003 (internal method based on ISO 2591-1).
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Batch number: SOLVCAT
Samplilng date: 2 September 2009

Results and discussion

Particle size
Percentile:
D50
Mean:
ca. 2 990 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.

Any other information on results incl. tables

Table 1 :individual values, mean value and standard deviation obtained for oversize (retained fraction) on each sieve

Sieve mesh (µm)

Trial 1

Oversize (%)

Trial 2

Oversize (%)

Trial 3

Oversize (%)

Mean value (%)

Standard deviation (%)

4 750

3.79

3.73

3.52

3.68

0.14

3 360

32.86

30.52

33.43

32.3

1.5

2 380

42.09

41.84

40.37

41.4

0.9

1 700

14.99

16.19

15.23

15.5

0.6

1 190

5.57

6.84

6.56

6.3

0.7

833

0.19

0.21

0.23

0.21

0.02

600

0.14

0.24

0.23

0.20

0.06

417

0.07

0.10

0.13

0.10

0.03

125

0.10

0.16

0.14

0.13

0.03

0

0.19

0.17

0.16

0.17

0.02

 

Applicant's summary and conclusion

Executive summary:

 

D50 (µm)

D10 (µm)

D90 (µm)

Trial 1

3 011.85

1 848.56

4 449.11

Trial 2

2 951.01

1 782.43

4 424.03

Trial 3

3 005.65

1 798.69

4 441.83

Mean value

2 990

1 810

4 438

Standard deviation

30

30

13