Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
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
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Key result
Percentile:
D10
Mean:
ca. 365.8 µm
St. dev.:
1.3
Key result
Percentile:
D50
Mean:
ca. 936.1 µm
St. dev.:
0.9
Key result
Percentile:
D90
Mean:
ca. 1 526.3 µm
St. dev.:
1.4

Additionally to the determination of the particle size distribution, the test item was examined microscopically to determine the shape of the particles. The particles of the white granules have a cylindrical shape, a smooth surface and irregular edges.

Conclusions:
2,2'-azobis(2-amidinopropane)-dihydrochloride has a median particle size L50 = 936 µm.
Executive summary:

2,2'-azobis(2-amidinopropane)-dihydrochloride has a median particle size L50 = 936 µm, which was determined by laser diffraction measurement.

Description of key information

The tested 2,2'-azobis(2-amidinopropane) dihydrochloride has a median particle size L50 = 936 µm based on volumetric distribution of the sample.

Additional information