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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-03-29 - 2017-05-09
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 - Method A: Particle Size Distribution (effective hydrodynamic radius)
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: 608031
- Expiration date of the lot/batch: 25. Oct. 2018
- Purity test date: not stated

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: ambient temperature
- Stability under test conditions: assumed stable
- Solubility and stability of the test substance in the solvent/vehicle: no solvent/vehicle used
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium: no solvent/vehicle used

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
none
Mass median aerodynamic diameter:
98 µm
Key result
Percentile:
D10
Mean:
16 µm
St. dev.:
0.07
Key result
Percentile:
D50
Mean:
98 µm
St. dev.:
0.07
Key result
Percentile:
D90
Mean:
389 µm
St. dev.:
31.32
Conclusions:
Ammonium Benzoate has a median paricle size of D50 = 98 µm.
Executive summary:

The test item Ammonium Benzoate has a median particle size D50 = 98 µm, which was determined by laser diffraction measurement.

Description of key information

OECD-Guideline Study,

the median particle size D50 is 98 µm.

Additional information