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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2008-9-18
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Official print-out from Coulter LS particle size analyser, and not in the form of a full report.

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2008
Report date:
2008

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
A standard method using a Coulter LS particle size analyser was used. The model was an optical model Fraunhofer.rf780d (PIDS included). The run length was 62 seconds with pump speed set to 51, obscuration 15% and PIDS obscuration at 73%. The fluid used was methanol.
GLP compliance:
not specified
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Reference substance name:
Manganese sulphate monohydrate
IUPAC Name:
Manganese sulphate monohydrate
Details on test material:
Molecular formula of test material: MnS04.H2O

Results and discussion

Particle size
Key result
Percentile:
D50
Mean:
ca. 199.8 µm
Remarks on result:
other: Standard deviation not reported.
Remarks:
Standard deviation not reported.
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
< 100 µm
Distribution:
ca. 18.7 %
No.:
#2
Size:
< 8 µm
Distribution:
ca. 4.35 %

Any other information on results incl. tables

Please see attached report for tabulated results.

Applicant's summary and conclusion

Conclusions:
The particle size distribution test indicates that 18.7 % of the substance has particles less than 100 microns and therefore can be considered to be potentially inhalable.