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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:
June 20th, 2016.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 170
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
mass based distribution
Key result
Percentile:
D50
Mean:
> 2 000 - <= 3 350 µm
Remarks on result:
other: St. dev. not specified.
Key result
Percentile:
D10
Mean:
>= 500 - <= 1 000 µm
Remarks on result:
other: St. dev. not specified.
No.:
#1
Size:
> 3 350 µm
Distribution:
60.56 %
No.:
#2
Size:
> 2 000 - <= 3 350 µm
Distribution:
20 %
No.:
#3
Size:
> 1 000 - <= 2 000 µm
Distribution:
8.21 %
No.:
#4
Size:
> 500 - <= 1 000 µm
Distribution:
3.54 %
No.:
#5
Size:
> 250 - <= 500 µm
Distribution:
4.74 %
No.:
#6
Size:
> 125 - <= 250 µm
Distribution:
2.3 %
No.:
#7
Size:
>= 75 - <= 125 µm
Distribution:
0.6 %
No.:
#8
Size:
< 75 µm
Distribution:
0.06 %

Table 1. Summary of results.

Test

Guideline and method

Findings

Result

(%)

Particle size

distribution

OECD 110

(CIPAC MT 170)

Fraction

(µm)

> 3350

60.56

2000 - 3350

20.00

1000 – 2000

8.21

500 – 1000

3.54

250 – 500

4.74

125 – 250

2.30

75 – 125

0.60

< 75

0.06

 

Table 2. Results of the particle size distribution.

Fraction size

Test no.1

Test no.2

Average

(g)

(%)

(g)

(%)

(%)

> 3350 µm

0.00

0.00

0.00

0.00

60.56

2000 – 3350 µm

0.12

0.13

0.16

0.17

20.00

1000 – 2000 µm

0.33

0.34

0.45

0.47

8.21

500 – 1000 µm

19.26

20.10

20.18

20.86

3.54

250 – 500 µm

44.17

46.09

46.02

47.58

4.74

125 – 250 µm

22.64

23.62

21.62

22.35

2.30

75 – 125 µm

7.93

8.27

6.16

6.37

0.60

< 75 µm

1.39

1.45

2.13

2.20

0.06

 

Conclusions:
The average particle size for the test item is between 2000 and 3350 µm.
Executive summary:

The particle size of the test item was determined according OECD 110 / CIPAC MT 170 (GLP study). Since the solubility of the test item in common immersing liquids was higher than 100 ppm, the determination of particle size distribution was carried out using dry sieve test. The average particle size for the test item is between 2000 and 3350 µm, and the amount of particles 100 µm is 0.60%.

Description of key information

Key study. Method according to OECD 110 / CIPAC MT 170, GLP study. The average particle size for the test item is between 2000 and 3350µm.

Additional information

The particle size of the test item was determined according OECD 110 / CIPAC MT 170 (GLP study). Since the solubility of the test item in common immersing liquids was higherthan 100 ppm, the determination of particle size distribution was carried out using dry sieve test. The average particle size for the test item is between 2000 and 3350 µm, and the amount of particles 100 µm is 0.60%.