Registration Dossier

Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
05 November 2004 - 09 February 2005
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: valid method according to JRC Guidance

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2005
Report date:
2005

Materials and methods

Test guideline
Guideline:
other: See below
Principles of method if other than guideline:
Testing followed the JRC Guidance:
EUROPEAN COMMISSION, Directorate General XII-JRC, Science Research and Development-Joint Research Centre. "Particle Size Distribution, Fibre Length and Diameter Distribution" Guidance Document, ECBTTM/February 1996
GLP compliance:
yes (incl. QA statement)
Type of distribution:
volumetric distribution

Test material

Constituent 1
Reference substance name:
Reaction mass of 5,12-dihydro-2,9-dimethylquino[2,3-b]acridine-7,14-dione and 5,12-dihydro-2-methylquino[2,3-b]acridine-7,14-dione and 5,12-dihydroquino[2,3-b]acridine-7,14-dione
EC Number:
909-082-0
Cas Number:
938065-79-3
Molecular formula:
Unspecified
IUPAC Name:
Reaction mass of 5,12-dihydro-2,9-dimethylquino[2,3-b]acridine-7,14-dione and 5,12-dihydro-2-methylquino[2,3-b]acridine-7,14-dione and 5,12-dihydroquino[2,3-b]acridine-7,14-dione

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
1.2 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D50
Mean:
1.2 µm
St. dev.:
0.021

Any other information on results incl. tables

Overall, the particle size ranged approximately from 0.3 -40 µm.

Detailed results are presented in the following table.

[%]

1st Run
Particle

Size

[µm]

2nd Run
Particle
Size

[µm]

3rd Run
Particle
Size

[µm]

4th Run
Particle
Size

[µm]

Mean
Particle

Size

[µm]

Stand.
Dev.

[±]

5

0.46

0.45

0.45

0.44

0.5

0.008

10

0.57

0.55

0.56

0.55

0.6

0.010

50

1.23

1.20

1.20

1.18

1.2*

0.021

90

2.76

2.80

2.82

2.86

2.8

0.042

* The MMD of the test item indicates that 50 % (by mass) of the particies are smaller than 1.2 µm.

Applicant's summary and conclusion

Conclusions:
The test item has a mass median diameter of 1.2 µm.


Executive summary:

The particle size distribution was determined by laser diffraction following the JRC guidance document. The mass median diameter is 1.2 µm.