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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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:
12 to 13 August 2004
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Meets accepted standard methods, well documented and acceptable for assessment.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2004
Report date:
2004

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Particle size was determined using a Laser Particle Size Analyzer (Malvern Instruments).
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
4-(Cyclopropylcarbonyl)-α,α-dimethyl-ethyl ester benzeneacetic acid
EC Number:
605-546-9
Cas Number:
169280-10-8
Molecular formula:
C16 H20 O3
IUPAC Name:
4-(Cyclopropylcarbonyl)-α,α-dimethyl-ethyl ester benzeneacetic acid
Details on test material:
Batch: Versuch 32/04

Results and discussion

Mass median aerodynamic diameter:
84.52 µm
Particle sizeopen allclose all
Percentile:
D50
Mean:
ca. 64 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
13.19 µm
Remarks on result:
other: No standard deviation indication
Percentile:
D90
Mean:
188.2 µm
Remarks on result:
other: No standard deviation indication
Percentile:
D50
Mean:
64.07 µm
Remarks on result:
other: No standard deviation indication

Applicant's summary and conclusion

Conclusions:
Median particle size is 64 µm.