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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:
20 February, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
no guideline followed
Principles of method if other than guideline:
Performed with conventional steel sieves. Sieveing machine, Retsch AS 200 control. steel sieves 200mm diameter.
Procedure: clean and dry sieves together with a closed pan were weighed and stacked with the finest sieves at bottom. 30g homogenised samples are transferred to the top sieve. The stacked sieves are shaken in the appartatus at 1.5mm amplitude for 3 minutes. The sieves and the pan are reweighed and the granulate weight-% distribution calculated
GLP compliance:
not specified
Type of method:
sieving
Type of particle tested:
other:
Type of distribution:
mass based distribution
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: LOT 02/13
Remarks on result:
not determinable because of methodological limitations
Key result
Percentile:
D50
Mean:
< 155 µm
St. dev.:
0

Sieve size        On sieve         Through sieve (cumulative)

Bottom pan       0.7%

45 µrn              9.3%                 0.7%

75 µm              37.2%              10.0%

150 µm              52.8                  47.2%

Estimated from graph: 50%-point smaller than 155 gm.

Additional granulometry data from Explosia, Ca registrant of2,4-dinitrotoluene:

(SIP-data received for 2,4-Dinitrotoluene)

Particle size distribution. Dry sieving method

Apparatus: Retsch AS 200

Measurement conditions:

  • set of sieves with a mesh size 0.5 mm; 0.4 mm; 0.315 mm; 0.2 mm; 0.16 mm; 0.125 mm; 0.1 mm; 0.08 mm
  • weighed amount of the sample: 100 g
  • sieving time: 10 min
  • intensity level: 50

Result of exam:

Mesh size ( mm )

Oversize ( % )

Undersize, cumulative (%)

0.5

1.50

98.5

0.4

5.41

93.1

0.315

5.02

88.1

0.2

17.86

70.2

0.16

30.34

39.9

 0.125

24.94

14.9

0.1

8.29

6.6

0.08

4.03

2.6
 undersize fraction  2.61  

2

2.6 % smaller than 80 gm. Estimated from graph: 50% smaller than 170 gm.

These data are comparable with the data obtained from the Chemring Nobel sample.

Conclusions:
The Granulometry of 2,4-Dinitroanisole has been performed with conventional steel sieves and found to be 155 µm in average and no significant part smaller than 45 µm
Executive summary:

The Granulometry of 2,4-Dinitroanisole has been performed with conventional steel sieves and found to be 155 µm in average and no significant part smaller than 45 µm

Description of key information

The Granulometry of 2,4-Dinitroanisole has been performed with conventional steel sieves and found to be 155 µm in average and no significant part smaller than 45 µm.

Additional information

Particle size distribution of DNAN was investigated (Chemring Nobel AS, 03/17, 2017). The test has been performed with conventional steel sieves.

The granulometry of DNAN was found to be 155 µm in average and no significant part smaller than 45 µm.