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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:
The study was conduced between November 06, 2008 and February 26, 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: This study was conduced in compliance with agreed protocols. No amendment to the study plan was requested. No incident, which could have affected the quality or the interpretation of the results obtained, was observed.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

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:
2008/26/05
Type of distribution:
other: particule size

Test material

Constituent 1
Reference substance name:
acetalization product between glucose and C14 alcohol
EC Number:
923-418-3
IUPAC Name:
acetalization product between glucose and C14 alcohol
Details on test material:
test material: LCE08121; Batch: T82925
Appearance White pellets
Storage In darkness at room temperature

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
other: 89.4%
Mean:
< 4 mm
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
> 8 mm
Distribution:
ca. 37.3 %
No.:
#2
Size:
> 5.6 mm
Distribution:
ca. 15.5 %
No.:
#3
Size:
< 5.6 mm
Distribution:
ca. 47.2 %

Applicant's summary and conclusion

Conclusions:
The major part of the test item was lower than 4 mm (89.4% was retained by the 1-mm sieve).
Executive summary:

Introduction

The test item was tesed in accordance to the OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)

Method

Test sieving can be carried out by hand or with the aid of test sieving machines. If test sieving machines are used, the method shall always include the band sieving. The procedure consists in gently placing the material to be sieved on the test sieve with a specified nominal aperture size and separating the material by shaking, tapping or washing. In sieving successively with test sieves of different aperture sizes, the test sample is separated into size fractions designated by the aperture sizes of the test sieves used.

Procedure

Preliminary test: the test sample is sieved. If no significant amount of particles is obtained under 100 μm, the test is completed. If a significant amount of particles is obtained under 100 μm, a full test is performed.

Full test: the test sample particle size distribution is determined under 100 μm. - Above 100 μm the remaining amount of test item (or a coarse particle size distribution) is given. - Under 20 μm, the particle size distribution is performed by an appropriate method when the amount is significant (i.e. superior to 5% of the total test sample).

Conclusion

The major part of the test item was lower than 4 mm (89.4% was retained by the 1-mm sieve).