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Physical & Chemical properties

Particle size distribution (Granulometry)

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Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2020
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2020

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: ASTM C136 (AASHTO T-27)
Deviations:
no
Principles of method if other than guideline:
Procedure
1. Record the mass of the sample to be used.
2. Stack sieves in order from smallest to largest, starting at the bottom, with the pan below the smallest sieve.
3. Add the powder sample to the top sieve.
4. Tighten the equipment to ensure that the sieve stack is held firmly in the shaker assembly.
5. Set the sieve shaker to vibrate for 15 minutes.

Results
1. Carefully weigh the mass retained on each sieve and in the pan.
2. Organize the results in a table which provides columns for sieve number, sieve size, mass fraction retained.
a.The mass fraction is defined as the mass retained on a particular sieve divided by the initial sample mass.


GLP compliance:
no
Type of method:
sieving
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
429-530-4
EC Name:
-
Cas Number:
96662-24-7
Molecular formula:
C22H19N5O2
IUPAC Name:
Propanenitrile, 3-[[4-[2-(4-nitrophenyl)diazenyl]phenyl](phenylmethyl)amino]-
Test material form:
solid: particulate/powder

Results and discussion

Particle sizeopen allclose all
Percentile:
D10
Mean:
< 20 µm
Remarks on result:
not measured/tested
Percentile:
D50
Mean:
< 30 µm
Remarks on result:
not measured/tested
Percentile:
D90
Mean:
< 65 µm
Remarks on result:
not measured/tested
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
ca. 10 µm
Distribution:
< 2.5 %
Remarks on result:
not measured/tested
No.:
#2
Size:
ca. 20 µm
Distribution:
< 18.9 %
Remarks on result:
not measured/tested
No.:
#3
Size:
ca. 30 µm
Distribution:
< 50.5 %
Remarks on result:
not measured/tested
No.:
#4
Size:
ca. 40 µm
Distribution:
< 67.7 %
Remarks on result:
not measured/tested
No.:
#5
Size:
ca. 50 µm
Distribution:
< 81.3 %
Remarks on result:
not measured/tested
No.:
#6
Size:
ca. 65 µm
Distribution:
< 93.9 %
Remarks on result:
not measured/tested
No.:
#7
Size:
ca. 80 µm
Distribution:
ca. 100 %
Remarks on result:
not measured/tested
No.:
#9
Size:
ca. 100 µm
Distribution:
ca. 100 %
Remarks on result:
not measured/tested

Applicant's summary and conclusion

Conclusions:
Particle size distribution Dipesrse Orange 288:
D10<20µm
D50<30µm
D90<65µm

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