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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:
2016-10-19 – 2016-10-19
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Experimental data obtained using standard method of analysis
Justification for type of information:
Experimental data obtained 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 of test substance Basic brown 17 was determined by Granulometric analysis with Rotap sieve shaker
GLP compliance:
no
Type of method:
sieving
Type of distribution:
counted distribution
Specific details on test material used for the study:
- Name of test material:(8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylamm- onium chloride
- Molecular formula: C19H20N5O3Cl
- Molecular weight: 401.852 g/mol
- Smiles notation: [N+](c1cc(\N=N\c2c3cc([N+](C)(C)C)ccc3ccc2O)ccc1N)([O-])=O.[ClH-]
- Substance type: Organic
- Physical state: Solid
Key result
Percentile:
D50
Remarks on result:
other: 'Mass median diameter'
No.:
#1
Size:
150 µm
Distribution:
42.78 %
No.:
#2
Size:
106 µm
Distribution:
12.65 %
No.:
#3
Size:
75 µm
Distribution:
13.07 %
No.:
#4
Size:
53 µm
Distribution:
29.15 %
No.:
#5
Size:
25 µm
Distribution:
2.25 %
No.:
#6
Size:
10 µm
Distribution:
0.08 %

Observation Table:

Amount of test item weighed (g) = 10.002 g

Method run time (min) =10 min

Sieve sizes(in microns)

Weight of petridishes +

test item (g)

Test item quantity retained after sieving (g)

Percentage (%) of test item*

 150 microns

 51.704

4.173

42.78

 106 microns

45.594

1.234

12.65

75 microns 

49.985

1.275

13.07

 53 microns

40.166

2.844

9.39

 25 microns

 41.828

 0.220

 

2.25
 10 microns  44.493  0.008   

0.08

Percentage of test item =   Test item retained on each sieve after sieving X 100

                                                   Original test itemtaken

 

Conclusions:
The particle size distribution of test item [8-[(4-amino-3-nitrophenyl)azo]-7-hydroxy-2- naphthyl]trimethylammonium chloride (CAS No. 68391-32-2 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 10 micron.
Executive summary:

The particle size distribution of test item [8-[(4-amino-3-nitrophenyl)azo]-7-hydroxy-2- naphthyl]trimethylammonium chloride (CAS No. 68391-32-2 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 10 micron.

Description of key information

The particle size distribution of test item [8-[(4-amino-3-nitrophenyl)azo]-7-hydroxy-2- naphthyl]trimethylammonium chloride (CAS No. 68391-32-2 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 10 micron.

Additional information

The particle size distribution of test item [8-[(4-amino-3-nitrophenyl)azo]-7-hydroxy-2- naphthyl]trimethylammonium chloride (CAS No. 68391-32-2 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 10 micron.