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

Particle size distribution (Granulometry)

Administrative data

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2013-07-15

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2013

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

ISO 13320 (Particle size analysis - Laser diffraction methods)

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

Constituent 1

Reference substance name:

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

EC Number:

700-728-5

Cas Number:

74805-60-0

Molecular formula:

C10H8N2O2

IUPAC Name:

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

Test material form:

solid: particulate/powder

Results and discussion

Particle size

Particle size 1

Key result

Percentile:

D10

Mean:

6 µm

Remarks on result:

other: Standard deviation not reported

Particle size 2

Key result

Percentile:

D50

Mean:

28.7 µm

Remarks on result:

other: Standard deviation not reported

Particle size 3

Key result

Percentile:

D90

Mean:

78.9 µm

Remarks on result:

other: Standard deviation not reported

Any other information on results incl. tables

The test item consists of rod like particles (partly agglomerated, partly broken). 

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 = 28.71 μm

2^nd test series: L₅₀ = 28.76 μm

The average of the median particle size L₅₀ is

 L₅₀ = 28.7 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:

1^st test series: L₁₀ = 5.98 μm

2^nd test series: L₁₀ = 6.00 μm

The average of the median particle size L₁₀ is

 L₁₀ = 6.0 μm

 

The particle size L₉₀ (D (v, 0.1): 90 % of particle volume or particle mass with lower particle diameter) deduced from these distributions are:

1^st test series: L₉₀ = 79.01 μm

2^nd test series: L₉₀ = 78.87 μm

The average of the median particle size L₁₀ is

 L₉₀ = 78.9 μm

 

The precentage of particles with a particle size < 2 μm is approx. 3 % by mass of the total test item and the precentage of paticles with a particle size > 200 μm is approx. 1 % by mass of the total test item. 

Applicant's summary and conclusion

Conclusions:

The test item has a median particle size D50 = 28.7 µm, which was determined by laser diffraction measurement. D10 and D90 are 6.0 and 78.9 µm, respectively.