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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

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

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
Deviations:
no
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid

Results and discussion

Mass median aerodynamic diameter:
>= 10 - <= 90 µm
Geometric standard deviation:
>= 0.18 - <= 1.09
Particle size
Key result
Percentile:
D50
Mean:
ca. 27.4 µm
St. dev.:
0.91
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
>= 7.1 - <= 90 µm
Distribution:
ca. 0.73 other: Standard deviation
No.:
#2
Size:
>= 7.5 - <= 86.9 µm
Distribution:
ca. 1.09 other: Standard deviation
No.:
#3
Size:
>= 7.3 - <= 88.5 µm
Distribution:
ca. 0.18 other: Standard deviation

Applicant's summary and conclusion

Conclusions:
Palmitoyl grapevine shoot extract has a volume median diameter (VMD) of D50=27.4 µm
Executive summary:

Palmitoyl grapevine shoot extract has a volume median diameter (VMD) of D50=27.4 µm, which was determined by laser diffraction measurement.

Refer to attached study report.