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Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

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Endpoint:
particle size distribution (granulometry)
Data waiving:
other justification
Justification for data waiving:
other:
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
25 Dec 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Principles of method if other than guideline:
GB/T 21524-2008 Particle size determination of inorganic chemical products. Sieving method.
GLP compliance:
no
Type of method:
sieving
Type of distribution:
mass based distribution
No.:
#1
Size:
> 1 180 µm
Distribution:
28.41 %
No.:
#2
Size:
> 710 - <= 1 180 µm
Distribution:
16.4 %
No.:
#3
Size:
> 600 - <= 710 µm
Distribution:
4.76 %
No.:
#4
Size:
> 425 - <= 600 µm
Distribution:
9.94 %
No.:
#5
Size:
> 355 - <= 425 µm
Distribution:
8.03 %
No.:
#6
Size:
> 150 - <= 355 µm
Distribution:
22.82 %
No.:
#7
Size:
> 100 - <= 150 µm
Distribution:
8.82 %
No.:
#8
Size:
< 100 µm
Distribution:
0.1 %

On the basis of obtained data it can be concluded that D50 is ca. 600 µm (ca. 50% particles both above and below this value).

In two parallel measurements, the relative differences between the sum of all the masses obtained after shaking the sieve and the test sample mass before shaking the sieve were 0.73% and 0.59%, smaller than 1.5%, which met the test specifications; the measurement results were valid.

Description of key information

D50: ca. 600 µm (sieve method)

Additional information

Data for the substance in the solid state is available, however the substance is marketed or used in a non solid or granular form. It is a hygroscopic solid, marketed or used as aqueous solution.