Registration Dossier

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:
01 June 2017 to 06 July 2017
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Particle size analyses were carried out on the materials using sieve analysis
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
sieving
Type of particle tested:
other: fine dust
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Details on test material:
Identity: 1,5-Dinitronaphthalene
CAS number: 605-71-0
EC number: 210-095-2
Formula: C10H6N2O4
Molecular weight (g mol-1): 218.17
Specific details on test material used for the study:
Test item is referred to as DNN RK0067 throughout report.
Samples originate from Sesient Colours UK Ltd.
Samples received at test centre 11May2017

Results and discussion

Mass median aerodynamic diameter:
114 µm
Particle size
Key result
Percentile:
other: median
Mean:
ca. 114 µm
St. dev.:
0
Remarks on result:
other: Standard deviation not specified
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
< 300 µm
Distribution:
ca. 8.7 %
No.:
#2
Size:
< 200 µm
Distribution:
ca. 89.7 %
No.:
#3
Size:
< 100 µm
Distribution:
ca. 42.6 %
No.:
#4
Size:
< 50 µm
Distribution:
ca. 8.3 %

Any other information on results incl. tables

See attached report, page 4 for complete breakdown of particle sizes used to calculate median.

Applicant's summary and conclusion

Conclusions:
Median particle size was calculated to be 114µm based on a sieve analysis ranging from <50µm to >400µm.
Executive summary:

Median particle size was calculated to be 114µm based on a sieve analysis ranging from <50µm to >400µm.