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Physical & Chemical properties

Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Data waiving:
study scientifically not necessary / other information available
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.

Description of key information

 According to 7.14 Column 2 Annex VII of Regulation (EC) 1907/2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), the granulometry (particle size) of a substance does not need to be conducted if the substance is marketed, or used, in the EU in a non-solid or granular form. Although the test material is a solid at room temperature due to the physical nature of the test material (a waxy solid block), the particle size distribution could not be determined according to European Commission Technical Guidance Document EUR 20268 'Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of chemical substances (2002); therefore, this endpoint is waived.

Additional information