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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:
Jan 22, 2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Principles of method if other than guideline:
Measured by a dry sieving method using a rotap type sieving shaker.
GLP compliance:
no
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Mass median aerodynamic diameter:
1 280 µm
Remarks on result:
other: Geom. St. dev. was not determined
Percentile:
D50
Mean:
1 280 µm
Remarks on result:
other: St. dev. was not determined
No.:
#1
Size:
> 2 000 - <= 2 360 µm
Distribution:
0.22 %
No.:
#2
Size:
> 1 700 - <= 2 000 µm
Distribution:
17.65 %
No.:
#3
Size:
> 1 400 - <= 1 700 µm
Distribution:
23.64 %
No.:
#4
Size:
> 1 180 - <= 1 400 µm
Distribution:
15.77 %
No.:
#5
Size:
> 850 - <= 1 180 µm
Distribution:
18.85 %
No.:
#6
Size:
> 250 - <= 850 µm
Distribution:
19.94 %
No.:
#7
Size:
<= 250 µm
Distribution:
3.94 %

The particle size distribution measurement results are shown in Table 1.

Table 1 particle size distribution measurement results

Sample name

Test item

LOT.160911

Item

particle size distribution 

μm

Unit

D50

μm

1280

2360<

%

0.00

2000<X2360

%

0.22

1700<X2000

%

17.65

1400<X1700

%

23.64

1180<X1400

%

15.77

850<X1180

%

18.85

250<X850

%

19.94

X250

%

3.94

Description of key information

Particle size distribution measurement result

Test item

particle size distribution 

μm

Unit

D50

μm

1280

X > 2360

%

0.00

2000<X2360

%

0.22

1700<X2000

%

17.65

1400<X1700

%

23.64

1180<X1400

%

15.77

850<X1180

%

18.85

250<X850

%

19.94

X250

%

3.94

Additional information

The particle size distributon of the test substance was determined by sieve method.

Most of the particles have a size between > 250 µm and < 2000 µm.