4-(2-phenylpropan-2-yl)phenyl 3-diazo-4-oxo-3,4-dihydronaphthalene-1-sulfonate

Particle size distribution (Granulometry)

Administrative data

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

07 Jul - 06 Nov 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions) - Method B: Fibre Length and Diameter Distributions

Test guideline 2

Qualifier:

according to guideline

Guideline:

ISO 13320 (Particle size analysis - Laser diffraction methods)

Test guideline 3

Qualifier:

according to guideline

Guideline:

other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction

GLP compliance:

no

Type of method:

Laser scattering/diffraction

Type of particle tested:

primary particle

Type of distribution:

volumetric distribution

Test material

Test material information

Constituent 1

Reference substance name:

4-(2-phenylpropan-2-yl)phenyl 4-oxo-3-(λ⁵-diazynylidene)-3,4-dihydronaphthalene-1-sulfonate

Cas Number:

23121-00-8

Molecular formula:

C25H20N2O4S

IUPAC Name:

4-(2-phenylpropan-2-yl)phenyl 4-oxo-3-(λ⁵-diazynylidene)-3,4-dihydronaphthalene-1-sulfonate

Test material form:

solid

Specific details on test material used for the study:

Storage conditions: Ambient temperature (10 to 30 °C), protected from light

Results and discussion

Remarks on result:

not measured/tested

Particle size

Particle size 1

Percentile:

D10

Mean:

19.2 µm

St. dev.:

0.35

Remarks on result:

other: Individual results: 18.9 and 19.4 µm

Particle size 2

Percentile:

D50

Mean:

105.2 µm

St. dev.:

0.42

Remarks on result:

other: Individual results: 105.5 and 104.9 µm

Particle size 3

Percentile:

D90

Mean:

350.8 µm

St. dev.:

5.44

Remarks on result:

other: Individual results: 354.7 and 347 µm

Any other information on results incl. tables

Results
Laser diffraction
Median values were calculated from unrounded values.

The median particle size L₅₀(D (v, 0.5): 50% of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1^sttest series L₅₀= 105.5 µm; 2^ndtest series L₅₀= 104.9 µm
The average of the median particle size: L₅₀= 105.2 µm

The particle size L₁₀(D (v, 0.1): 105 of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1^sttest series: L₁₀= 18.9 µm; 2^ndtest series: L₁₀= 19.4 µm
The average of the particle size: L₁₀= 19.2 µm

The particle size L₉₀(D (v, 0.9): 90% of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1^sttest series: L₉₀= 354.7 µm; 2^ndtest series: L₉₀= 347 µm
The average of the particle size: L₉₀= 350.8 µm

The particle size distribution showed a monomodal distribution with a shoulder at ca. 1 µm. A maximum was seen at ca. 100 µm.