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Physical & Chemical properties

Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Test performed according to guidelines under Internal Management System
Qualifier:
according to guideline
Guideline:
other: ISO 2591-1, Test sieving
Qualifier:
according to guideline
Guideline:
other: ISO 3310-1
Qualifier:
according to guideline
Guideline:
other: Draft EUR 20268 EN
GLP compliance:
no
Type of method:
sieving
Type of distribution:
mass based distribution
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
No.:
#1
Size:
> 100 µm
Distribution:
100 %

The result from the sieving of the sample is shown in the table below.

Table 6.1: Sieve results 100 μm sieve

 

Amount

Fraction

[g]

[%]

< 100mm

0.03

0.0

> 100mm

174.9

100.0

 

It is concluded that there are less than 1%m/m particles < 100 μm present and therefore the

PSD of this fraction was not determined

Conclusions:
Sieving the sample over a 100 μm sieve showed that less than 1%m/m is < 100 μm.
Executive summary:

The granulometry of Bis(4-methylbenzoyl) peroxide was determined in accordance with European Chemicals Agency (ECHA), Guidance on information requirements and chemical safety assessment, Chapter R.7a, Endpoint specific guidance, May 2008. Sieving of the product revealed that less than 1%m/m is < 100 μm. Therefore no microscopic picture was taken and no PSD determination of this fraction was conducted.

Description of key information

Sieving the sample over a 100 μm sieve showed that the particle size is >100 μm.  

Additional information