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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:
29 June 2006 and 24 July 2006.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2006
Report date:
2006

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Date of inspection: 30/08/06; Date of signature: 04/09/2006
Type of method:
sieving
Type of distribution:
other: mechanical sieve shaker

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
483-390-9
EC Name:
-
Cas Number:
12508-61-1
Molecular formula:
H16Mg6O17S
IUPAC Name:
hexamagnesium(2+) trihydrate decahydroxide sulfate

Results and discussion

Particle size
Key result
Percentile:
D50
Remarks on result:
other: No source field for Standard deviation.
Particle size distribution at different passages
No.:
#1
Size:
< 100 µm
Distribution:
>= 5.19 - <= 5.2 %

Any other information on results incl. tables

The results of the sieving procedure are shown in the following table:

Sieve aperture size (µm)

100

Mass of test material transferred to sieve (g)

16.18

Mass of test material passed through sieve (g)

0.84

Test material less than sieve aperture size (%)

5.19

Conclusion

Particle size data acquired for the test material are shown in table:

Measurement

Method

Result

Proportion of test material having an inhalable particle size less than 100 µm

Sieve

5.19%

The test material has been determined to be essentially non-inhalable.

Applicant's summary and conclusion

Conclusions:
Particle size data acquired for the test material are shown below:
Proportion of test material having an inhalable particle size less than 100 µm: Sieve 5.19%
The test material has been determined to be essentially non-inhalable.
Executive summary:

For substance MOS-HIGE in project number 1456-0064, the method used is designed to comply with that given in ‘Particle Size Distribution, Fibre Length and Diameter Distribution’, June 1996 European Commission technical guidance document, which satisfies the requirements of OECD Guideline 110.

Particle size data acquired for the test material are shown below:

Measurement

Method

Result

Proportion of test material having an inhalable particle size less than 100 µm

Sieve

5.19%

The test material has been determined to be essentially non-inhalable.