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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study according to internetional accepted guidelines but not GLP compliant.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: US PHARMACOPEIA 786, Ph.Eur 2.9.38
GLP compliance:
no
Type of distribution:
mass based distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
4-aminobutyric acid
EC Number:
200-258-6
EC Name:
4-aminobutyric acid
Cas Number:
56-12-2
Molecular formula:
C4H9NO2
IUPAC Name:
4-aminobutanoic acid
Test material form:
solid: crystalline
Details on test material:
Test item: 4-Aminobutyric acid
CAS number: 56-12-2l
Batch number BCBN4740V
Physical state: Solid, crystalline powder
Storage: at 15-30 °C

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
>= 180 - <= 250 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
other: 1 %
Mean:
>= 63 - <= 140 µm
Percentile:
other: 24.7 %
Mean:
>= 140 - <= 180 µm
Percentile:
other: 48.4 %
Mean:
>= 180 - <= 250 µm
Percentile:
other: 17.1 %
Mean:
>= 250 - <= 355 µm
Percentile:
other: 8.8 %
Mean:
>= 355 - <= 1 000 µm
Particle size distribution at different passages
Remarks on result:
other: not relevant in this test

Applicant's summary and conclusion