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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 test result performed using standard test guidelines
Qualifier:
according to
Guideline:
other: as mentioned below
Principles of method if other than guideline:
The particle size distribution of Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex was determined by granulometric analysis with rotap sieve shaker.
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: Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex- IUPAC name: aluminum tris(4-{[3-carboxy-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazenyl}benzenesulfonate)- Molecular formula: C48H33AlN12O27S6- Molecular weight: 1429.19 g/mole- Smiles : C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)O)C(=O)O)S(=O)(=O)[O-].C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)O)C(=O)O)S(=O)(=O)[O-].C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)O)C(=O)O)S(=O)(=O)[O-].[Al+3]- Inchl: 1S/3C16H12N4O9S2.Al/c3*21-15-13(18-17-9-1-5-11(6-2-9)30(24,25)26)14(16(22)23)19-20(15)10-3-7-12(8-4-10)31(27,28)29;/h3*1-8,13H,(H,22,23)(H,24,25,26)(H,27,28,29);/q;;;+3/p-3- Substance type: Organic- Physical state: Solid Red powder
Key result
Percentile:
D50
Remarks on result:
other: mass median diameter
No.:
#1
Size:
150 µm
Distribution:
61.053 %
Remarks on result:
other: no other details mentioned
No.:
#2
Size:
106 µm
Distribution:
19.68 %
Remarks on result:
other: no other details mentioned
No.:
#3
Size:
75 µm
Distribution:
8.617 %
Remarks on result:
other: no other details mentioned
No.:
#4
Size:
53 µm
Distribution:
5.717 %
Remarks on result:
other: no other details mentioned
No.:
#5
Size:
25 µm
Distribution:
3.199 %
Remarks on result:
other: no other details mentioned
No.:
#6
Size:
10 µm
Distribution:
1.734 %
Remarks on result:
other: no other details mentioned
No.:
#7
Distribution:
0 %
Remarks on result:
other: bottom pan

OBSERVATION TABLE

Amount of test item weighed (g)=10.008

Method run time(minute)=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

50.824

5.916

61.0526

106 microns

55.832

1.907

19.6800

75 microns

45.611

0.835

8.6171

53 microns

42.309

0.554

5.7172

25 microns

44.622

0.31

3.1991

10 microns

44.512

0.168

1.7337

Bottom Pan

-

0

0.0000

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

                                            total test item retained after sieving

Conclusions:
The particle size distribution of Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex (CAS No. 12225-21-7) was determined to be in the range of 150 micron to 10 micron.
Executive summary:

The particle size distribution of test item Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex (CAS No. 12225-21-7) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined in the range of 150 micron to 10 micron.

Description of key information

The particle size distribution of Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex (CAS No. 12225-21-7)  was determined to be in the range of 150 micron to 10 micron.

Additional information

The particle size distribution of test item Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex (CAS No. 12225-21-7) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined in the range of 150 micron to 10 micron.

Other supporting data from another report also determined the particle size distribution (granulometry) of aluminium, 4, 5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl) azo]-1H-pyrazole-3-carboxylic acid complex by the sieve analysis method in the range of 75 micrometer to 600 micrometer. Majority of the particles were found to be in the size more than 150 (62.50%) micrometers in size.a