Registration Dossier

Physical & Chemical properties

Explosiveness

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Description of key information

According to column 2 of Annex VII REACH-regulation the study does not need to be conducted because there are no chemical groups associated with explosive properties present in graphite. Graphite could not be ignited with a flame - c.f. flammability.

Additional information: graphite dusts with particles sizes from 4 to 40 µm are able to explode in a wide range of concentrations. The minimum ignition energy is 1 kJ for the finest dust. The dusts tested were classified as St1. (Denkevits, A. (2003)).

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

Waiving is applicable to Expanded Graphite Powder as well as to Synthetic Graphite, because the impurities of both materials have no relevant influence on that endpoint.

Justification for classification or non-classification

According to column 2 of Annex VII REACH-regulation the study does not need to be conducted because there are no chemical groups associated with explosive properties present in graphite. Graphite could not be ignited with a flame - c.f. flammability - conclusive but not sufficient for classification.