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Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010 08 30 to 2010 09 06
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study
Principles of method if other than guideline:
CIPAC Handbook Volume F, MT 59.1 (1995)
GLP compliance:
yes
Type of method:
sieving
Type of distribution:
volumetric distribution
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
No.:
#1
Size:
< 32 µm
Distribution:
2.52 %
Remarks on result:
other: with fine dust
No.:
#2
Size:
32 - 45 µm
Distribution:
0.78 %
Remarks on result:
other: with fine dust
No.:
#3
Size:
45 - 63 µm
Distribution:
2.52 %
Remarks on result:
other: with fine dust
No.:
#4
Size:
63 - 75 µm
Distribution:
1.79 %
Remarks on result:
other: with fine dust
No.:
#5
Size:
75 - 90 µm
Distribution:
1.87 %
Remarks on result:
other: with fine dust
No.:
#6
Size:
90 - 125 µm
Distribution:
4.26 %
Remarks on result:
other: with fine dust
No.:
#7
Size:
125 - 250 µm
Distribution:
22.92
Remarks on result:
other: with fine dust
No.:
#8
Size:
> 250 µm
Distribution:
63.25
Remarks on result:
other: with fine dust

Table 1:  Particle Size Distribution of4-Aminophenol

Particle size fraction
[µm]

Mass fraction

with fine dust
[%]

without fine dust*
[%]

< 32

2.52

0.02

32 – 45

0.78

0.80

45 – 63

2.52

2.58

63 – 75

1.79

1.84

75 – 90

1.87

1.91

90 – 125

4.26

4.37

125 – 250

22.92

23.50

> 250

63.35

64.97

*)               removed in the preliminary test (2.49 %)

 

Table 3:   Particle Size Distribution of the Fine Dust

 

Replicate I

Replicate II

Particle Size

[µm]

Counted absolute

Counted [%]

Counted absolute

Counted [%]

0 - 10

0

0.0

1

0.9

10 - 20

13

14.4

20

18.9

20 - 30

22

24.4

45

42.5

30 - 40

30

33.3

29

27.4

40 - 50

11

12.2

13

12.3

50 - 60

10

11.1

2

1.9

60 - 70

4

4.4

0

0.0

Table 4:   Total Residue Distribution of the Fine Dust

 

Replicate I

Replicate II

Particle Size

[µm]

Counted absolute

Counted [%]

Counted absolute

Counted [%]

< 10

0

0.0

1

0.9

< 20

13

14.4

21

19.1

< 30

35

38.9

66

60.0

< 40

65

72.2

95

86.4

< 50

76

84.4

108

98.2

< 60

86

95.6

110

100.0

< 70

90

100.0

110

100.0

Table 5:Mass Fractions (> 32 µm, < 250 µm)

Sieve
mesh width

[µm]

Mass of
empty sieve

[g]

Mass of sieve
+ test item

[g]

Mass of test item remaining on the sieve
[g]

< 32

414.30

414.33

0.03

32

271.70

272.87

1.17

45

426.69

430.47

3.78

63

425.85

428.54

2.69

75

425.60

428.40

2.80

90

421.66

428.06

6.40

125

248.41

282.81

34.40

250

278.43

373.53

95.10

 

 

146.37

 

Table 7:Total Residue Distribution Sum on all CoarserSieves in the Series

Sieve width
[µm]

Total residue

with fine dust
[%]

without fine dust*
[%]

< 32

100.00

100.00

32

97.48

99.98

45

96.70

99.18

63

94.18

96.60

75

92.39

94.76

90

90.53

92.85

125

86.26

88.47

250

63.35

64.97

            *) removed in the preliminary test (9.29 %)

Conclusions:
The amount of fine dust (particle size fraction < 32 µm) removed by preliminary sieving with the 32 µm sieve was determined to be 2.49 % of the applied mass. Mass fraction > 125 microns was 86.27%.

Description of key information

The amount of fine dust (particle size fraction < 32 µm) was 2.49 %  and mass fraction > 125 microns was 86.27%. 

Additional information

Key experimental study.