2,4-Imidazolidinedione, 5-(2-methylpropylidene)-, (5Z)-

Particle size distribution (Granulometry)

Administrative data

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

06 Jun - 15 Jul 2013

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2013

Report date:

2013

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

other: CIPAC MT: Particle Size Analysis by Laser Diffraction

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

ISO 13320 (Particle size analysis - Laser diffraction methods)

Version / remarks:

2009

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

Laser scattering/diffraction

Type of particle tested:

primary particle

Type of distribution:

mass based distribution

Test material

Test material information

1

Reference substance name:

(5Z)-5-(2-methylpropylidene)imidazolidine-2,4-dione

EC Number:

700-726-4

Cas Number:

1369499-44-4

Molecular formula:

C7H10N2O2

IUPAC Name:

(5Z)-5-(2-methylpropylidene)imidazolidine-2,4-dione

Test material form:

solid: particulate/powder

Results and discussion

Particle size

Particle size 1

Key result

Percentile:

D50

Mean:

27.8 µm

Remarks on result:

other: St. dev.was not reported

Particle size 2

Key result

Percentile:

D10

Mean:

4.5 µm

Remarks on result:

other: St. dev. was not reported

Particle size 3

Key result

Percentile:

D90

Mean:

141.6 µm

Remarks on result:

other: St. dev. was not reported

Any other information on results incl. tables

Individual Results:

The test item consists of very small irregular shaped particles.

For each test series fractions (left axis of the ordinate) and the siftings (right axis of the ordinate) are presented in volume % as a function of the particle size.

The median particle size L50 (D (v, 0.5): 50 % of particle volume or particle mass with lower particle

diameter) deduced from these distributions are:

1 st test series: L50 = 28.17 μm

2nd test series: L50 = 27.50 μm

The average of the median particle size L50 is L50 = 27.8 μm

The particle size L10 (D (v, 0.1 ): 10 % of particle volume or particle mass with lower particle

diameter) deduced from these distributions are:

1st test series: L10 = 4.54 μm

2nd test series: L10 = 4.44 μm

The average of the particle size L10 is L10 = 4.5 μm

The particle size L90 (D (v, 0.9): 90 % of particle volume or particle mass with lower particle

diameter) deduced from these distributions are:

1st test series: L90 = 144.41 μm

2nd test series: L90 = 138.88 μm

The average of the particle size L90 is L90=141.6μm

The percentage of particles with a particle size < 2 μm is approx. 4 % by mass of the total test item and the percentage of particles with a particle size > 200 μm is approx. 5 % by mass of the total test item.

Applicant's summary and conclusion

Conclusions:

The median particle size L50 of the test items deduced from the particle size distributions is 27.8 μm.
The particle size L10 of the test items deduced from the particle size distributions is 4.5 μm.
The particle size L90 of the test items deduced from the particle size distributions is 141 .6 μm.