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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:
Completion date of the experimental work-04/12/2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Qualifier:
equivalent or similar to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
not specified
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of particle tested:
agglomerate
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
Product Name R507-2


Batch No. Purity
Sample Density

Storage

070711

2: 96.4 %
1.79 g/cm3 (supplied by Notox) At room temperature in the dark.



Expiry date

11 July 2011



Special Hazards

Limited information, therefore all necessary precautions taken.


Appearance The study plan states that the sample is a red powder.
Mass median aerodynamic diameter:
5.171 µm
Remarks on result:
other: Average of 5 runs
Key result
Percentile:
D50
Mean:
3.865 µm
St. dev.:
0

 Full test results

 

 

 

RUN 1

RUN 2

RUN3

RUN4

RUNS

**Average

Volume weighted Mean

13.826

13.827

13.641

13.902

14.598

13.959

Median (d.50)

3.859

3.814

3.777

3.876

4.012

3.865

Mode (µm)

2.820

2.783

2.768

2.769

2.773

2.783

"'MMAD

5.163

5.102

5.053

5.185

5.368

5.171

10 % of material is <

1.316

1.307

1.298

1.309

1.322

1.310

50 % of material is <

3.859

3.814

3.777

3.876

4.012

3.865

90 % of material is <

42.468

42.502

42.108

42.454

43.846

42.676

 

All results are in µm

* Mass Median AerodynamicDiameter

**Average result is calculated from the entirety of data captured in each run and is not a simple arithmetic mean.

67.69 % by volume of sample was seen to be < 10.00 µm.

 

 

Conclusions:
• 67.69 % by volume of sample was seen to be < 10.00 µm.
Executive summary:

The laser diffraction test conducted to determine the Particle size analysis produced the following results:

 Summary of results

 

Average (pm)

Volume weighted mean

13.959

Median (d.50)

3.865

Mode

2.783

MMAD(Mass Median Aerodynamic Diameter)

5.171

10 % of material is <

1.310

50 % of material is <

3.865

90 % of material is <

42.676

 

         67.69 % by volume of sample was seen to be < 10.00 µm.

 

Due to the' sample being a dye, and containing small particles, the liquid module was used.

 

Several solvents were tried, in order to determine a suitable medium that provided maximum dispersability, but with minimum solubility. Acetone was finally selected as the most suitable dispersant.

 

Description of key information

The laser diffraction test conducted to determine the Particle size analysis produced the following results:

 Summary of results 

 

Average (pm)

Volume weighted mean

13.959

Median (d.50)

3.865

Mode

2.783

MMAD(Mass Median Aerodynamic Diameter)

5.171

10 % of material is <

1.310

50 % of material is <

3.865

90 % of material is <

42.676

 

         67.69 % by volume of sample was seen to be < 10.00 µm.

 

Due to the sample being a dye, and containing small particles, the liquid module was used.

 

Several solvents were tried, in order to determine a suitable medium that provided maximum dispersability, but with minimum solubility. Acetone was finally selected as the most suitable dispersant.

 

Additional information