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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
31 Aug 2017 - 1st Sept 2017
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

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

Materials and methods

Test guidelineopen allclose all
Qualifier:
equivalent or similar to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
not specified
Qualifier:
equivalent or similar to guideline
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
Deviations:
not specified
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
Barium selenate
EC Number:
232-113-8
EC Name:
Barium selenate
Cas Number:
7787-41-9
Molecular formula:
Ba.H2O4Se
IUPAC Name:
barium selenate
Test material form:
solid: crystalline

Results and discussion

Particle sizeopen allclose all
Key result
Percentile:
D10
Mean:
ca. 0.77 µm
St. dev.:
0.029
Key result
Percentile:
D50
Mean:
ca. 2.27 µm
St. dev.:
0.139
Key result
Percentile:
D90
Mean:
ca. 7 µm
St. dev.:
0.41
Percentile:
D99
Mean:
ca. 18.59 µm
St. dev.:
1.037

Applicant's summary and conclusion