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Physical & Chemical properties

Particle size distribution (Granulometry)

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Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
June 6th 1997
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
GLP

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1997
Report date:
1997

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Version / remarks:
method A
Principles of method if other than guideline:
The particle size distribution was determined using a Coulter Counter, in accordance with the OECD Guideline 110, Method A, Particle size distribution. The particle shape was determined visually using a microscope.
GLP compliance:
yes (incl. QA statement)
Type of method:
microscopic examination
Type of particle tested:
primary particle
Type of distribution:
counted distribution

Test material

Constituent 1
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
Appearance: White powder
Date received:2 October 1996

Results and discussion

Mass median aerodynamic diameter:
5.3 µm
Remarks on result:
other: The calculated percentage less than 10 pm aerodynamic diameter was approximately 90%
Particle size
Key result
Percentile:
D50
Mean:
53 µm
Remarks on result:
other: Mass median diameter' as D50 percentile. No source field for Standard deviation.

Any other information on results incl. tables

fill in if anything to add

Applicant's summary and conclusion

Conclusions:
11.43% by volume less than 2.031 gm equivalent spherical diameter, 0.287% greater than 203.0 gm and 88.283% between 2.031 and 203.0gm