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Physical & Chemical properties

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:
from 2017-09-14 to 2017-12-20
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 170 Dry Sieve Analysis of Water Dispersible Granules, CIPAC Handbook Volume F
Version / remarks:
1995
Deviations:
no
Principles of method if other than guideline:
- Principle of test: Sieve analysis consists of the quantitative separation of the test item into fractions of different particle size ranges by use of the machine sieving method.
GLP compliance:
yes (incl. QA statement)
Type of method:
sieving
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Batch No.of test material: Lab NP_20171034-003
- Expiration date of the lot/batch: 2022-08-18

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: closed vessel at room temperature (20 ± 5 °C).

OTHER SPECIFICS:
white solid
No.:
#1
Size:
45 µm
Distribution:
0.1 %
No.:
#2
Size:
63 µm
Distribution:
1.5 %
No.:
#3
Size:
100 µm
Distribution:
15.1 %
No.:
#4
Size:
250 µm
Distribution:
55.8 %
No.:
#5
Size:
500 µm
Distribution:
14.8 %
No.:
#6
Size:
1 000 µm
Distribution:
4.8 %
No.:
#7
Size:
2 000 µm
Distribution:
2 %
No.:
#8
Size:
4 000 µm
Distribution:
3.2 %

Using the dry sieve analysis in order to determine the particle size distribution of the test item a range of 100 μm to over 1000 μm was found which covers at least 80 % of the particle size distribution.

Table 1: Results of the Sieve Test

Sieve

Residue Mass gx (g)

Residue x (m/m)%

Sum of Residues Rx (m/m)%

Size (µm)

Serial No

45

20111588

0.05

0.1

97.21

63

20111627

0.91

1.5

97.12

100

31121141

9.01

15.1

95.60

250

20111667

33.32

55.8

80.52

500

16111554

8.85

14.8

24.75

1000

20111725

2.84

4.8

9.94

2000

24111027

1.21

2.0

5.19

4000

14111099

1.89

3.2

3.16

range: x1 = 100 μm where Rx ≥ 90 %; x2 = 1000 μm where Rx ≤ 10 %
Conclusions:
55.8 % of the test item has a particle size of 250 µm. Around 80 % of all particles were distributed in the range of 100 to 1000 µm.
Executive summary:

A study according to CIPAC MT 170 was performed in order to determine the particle size distribution of the test item. Using the dry sieve analysis in order to determine the particle size distribution of the test item a range of 100 μm to over 1000 μm was found which covers at least 80 % of the particle size distribution. 55.8 % of the test item has a particle size of 250 µm.

Description of key information

55.8 % of the test item has a particle size of 250 µm. Around 80 % of all particles were distributed in the range of 100 to 1000 µm.

Additional information

A study according to CIPAC MT 170 was performed in order to determine the particle size distribution of the test item. Using the dry sieve analysis in order to determine the particle size distribution of the test item a range of 100 μm to over 1000 μm was found which covers at least 80 % of the particle size distribution. 55.8 % of the test item has a particle size of 250 µm.