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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Justification for type of information:
Experimental result using standard method of analysis
Qualifier:
according to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
The particle size distribution was determined for the chemical Di aluminium tris [2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate] (CAS No. 15876-39-8).
GLP compliance:
not specified
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
counted distribution
Specific details on test material used for the study:
Name of test material (as cited in study report):Di aluminium tris [2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate]
- Molecular formula :C20H8Br4O5.2/3Al
- Molecular weight :1991.5992 g/mol
- InChl :1S/3C20H8Br4O5.2Al/c3*21-11-5-9-17(13(23)15(11)25)28-18-10(6-12(22)16(26)14(18)24)20(9)8-4-2-1-3-7(8)19(27)29-20;;/h3*1-6,25-26H;;/q;;;2*+3/p-6
- Substance type: Organic
- Physical state: Solid
Key result
Percentile:
D50
Remarks on result:
other: Mass median diameter
No.:
#1
Size:
150 µm
Distribution:
29.4 %
No.:
#2
Size:
106 µm
Distribution:
14.08 %
No.:
#3
Size:
75 µm
Distribution:
23.02 %
No.:
#4
Size:
53 µm
Distribution:
0.44 %
No.:
#5
Size:
25 µm
Distribution:
29.02 %
No.:
#6
Size:
10 µm
Distribution:
3.38 %

OBSERVATION TABLE:

Amount of test item weighed (g) =10 g

Method run time (min) =10 min

There was some loss of particles that remain adhered within the mesh of the finest sieve

Sieve sizes(in microns)

Weight of petridishes (g)

Weight of petridishes +

test item (g)

Test item quantity retained after sieving (g)

Percentage (%) of test item*

150 microns

41.739

44.679

2.940

29.40%

106 microns

47.780

49.188

1.408

14.08%

75 microns

37.051

39.353

2.302

23.02%

53 microns

43.146

43.190

0.044

0.44%

25 microns

49.895

52.797

2.902

29.02%

10 microns

45.064

45.402

0.338

3.38 %

*Percentage of test item=       test item retained after sieving X 100

                                                               Original test item taken

Conclusions:
The particle size distribution of chemical Di aluminium tris [2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate] was determined to be in the range of 150 micron to 10 micron.
Executive summary:

The particle size distribution of chemical Di aluminium tris [2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate] (CAS No. 15876-39-8) was determined by granulometric analysis with rotap sieve shaker.

The particle size distribution of chemical Di aluminium tris [2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate] was determined to be in the range of 150 micron to 10 micron. Thus, it can be concluded that the majority of the particles are not of inhalable size.

Description of key information

The particle size distribution of chemical Di aluminium tris [2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate] was determined to be in the range of 150 micron to 10 micron.

Additional information

The particle size distribution of chemical Di aluminium tris [2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate] (CAS No. 15876-39-8) was determined by granulometric analysis with rotap sieve shaker.

The particle size distribution of chemical Di aluminium tris [2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate] was determined to be in the range of 150 micron to 10 micron. Thus, it can be concluded that the majority of the particles are not of inhalable size.