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Description of key information

Mn3O4 has low oral toxicity when given to adult rats over a sub-acute period. Mn3O4 has been demonstrated to have low  toxicity at low air concentrations (equivalent to 1 mg respirable Mn/m3) (Ulrich et al 1979). No dermal studies are available, but absorption of Mn3O4 through skin is not expected based on its very poor solubility in water.

Key value for chemical safety assessment

Additional information

Justification for classification or non-classification

There are no data to suggest that classification of the substance for repeated dose toxicity is required.

In accordance with the criteria for classification as defined in Annex I, Regulation (EC) No. 1272/2008, the substance does not require classification with respect to specific target organ toxicity, repeated exposure.

In accordance with the criteria for classification as defined in Annex VI, Directive 67/548/EEC (DSD), the substance does not require classification with respect to repeated dose toxicity.