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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:
3. 2. 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
other: Guidance Document on the Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of Chemical Substances, EUR 20268 EN (2002).
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: ISO 2591-1 Test sieving - Part 1: Methods using test sieves of woven wire cloth and perforated metal plate
Deviations:
no
Principles of method if other than guideline:
A single test sieve separates a particular material into two fractions, of which one is retained by the sieving medium and the other of which passes through its apertures.The apparatus Analysette 3 is a shaking sieve system in the classic sense, with an electromagnetic drive in the base, which vibrates the sieves vertically.
GLP compliance:
no
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
No.:
#1
Size:
1 400 µm
Distribution:
0.61 %
No.:
#2
Size:
1 000 µm
Distribution:
4.35 %
No.:
#3
Size:
710 µm
Distribution:
12.17 %
No.:
#4
Size:
500 µm
Distribution:
19.87 %
No.:
#5
Size:
355 µm
Distribution:
14.46 %
No.:
#6
Size:
250 µm
Distribution:
13 %
No.:
#7
Size:
180 µm
Distribution:
10.96 %
No.:
#8
Size:
125 µm
Distribution:
8.8 %
No.:
#9
Size:
100 µm
Distribution:
4.22 %
No.:
#10
Size:
80 µm
Distribution:
3.04 %

Standard uncertainty of determination is equal to a standard deviation and is calculated for every fraction separately.

Conclusions:
see Executive summary
Executive summary:

The particle size distribution of the test substance, Direct Brown 103, was determined. The sieving method was used.

The procedures used in the study were in accordance with:

Guidance Document on the Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of Chemical Substances, EUR 20268 EN (2002).

ISO 2591-1 Test sieving - Part 1: Methods using test sieves of woven wire cloth and perforated metal plate.

Particle size distribution of test substance, Direct Brown 103, is characterized by the following table:

Nominal aperture size 

(um)

Sieve fractions (%)

Cumulative undersize (%)

Final result

Standard uncertainty

Final result

Standard uncertainty

1400

0.61

0.08

99.39

0.08

1000

4.35

0.33

95.04

0.41

710

12.17

0.47

82.87

0.88

500

19.87

0.09

63.00

0.80

355

14.46

0.14

48.54

0.94

250

13.00

0.08

35.55

0.86

180

10.96

0.11

24.59

0.74

125

8.80

0.43

15.79

0.31

100

4.22

0.80

11.57

0.49

80

3.04

0.35

8.53

0.84

< 80

8.53

0.84

 

 

Standard uncertainty is equal to one standard deviation.

Description of key information

The particle size distribution of the test substance, Direct Brown 103, was determined. The sieving method was used.

The procedures used in the study were in accordance with:

Guidance Document on the Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of Chemical Substances, EUR 20268 EN (2002).

ISO 2591-1 Test sieving - Part 1: Methods using test sieves of woven wire cloth and perforated metal plate.

Additional information

Particle size distribution of test substance, Direct Brown 103, is characterized by the following table:

Nominal aperture size 

(um)

Sieve fractions (%)

Cumulative undersize (%)

Final result

Standard uncertainty

Final result

Standard uncertainty

1400

0.61

0.08

99.39

0.08

1000

4.35

0.33

95.04

0.41

710

12.17

0.47

82.87

0.88

500

19.87

0.09

63.00

0.80

355

14.46

0.14

48.54

0.94

250

13.00

0.08

35.55

0.86

180

10.96

0.11

24.59

0.74

125

8.80

0.43

15.79

0.31

100

4.22

0.80

11.57

0.49

80

3.04

0.35

8.53

0.84

< 80

8.53

0.84

 

 

Standard uncertainty of determination is equal to a standard deviation and is calculated for every fraction separately.