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Physical & Chemical properties

Flammability

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Description of key information

a) Flammability: Manganese ferrite black spinel didn't burn down or burn up. The test was performed according the guideline UN 33.2.1.4 (Currenta 2008).
b) Pyrophoric properties: In accordance with section 1 of REACH Annex XI, the study on pyrophoric properties does not need to be conducted due to experience in production and handling, the substance is known to be stable at room temperature.
c) Flammability in contact with water: In accordance with section 1 of REACH Annex XI, a study does not need to be conducted as all members of the category are inert oxides. Although, the iron oxides contain metals, release of metal ions into water is not expected, due to an extremely low water solubility and the manganese ions are taken up into the crystal lattice of the substances.
d) Organic peroxide: In accordance with part 2, section 2.15 of Annex I of the CLP Regulation 1272/2008, the substance does not need to be assessed for organic peroxide properties, as based on its chemical structure, iron manganese trioxide is not an organic peroxide.
e) Self-reacting properties: In accordance with Annex I, part 2, section 2.8 of the CLP regulation 1272/2008, a study does not need to be conducted, as there are no chemical groups present in the molecule associated with explosive or self-reactive properties; examples of such groups are given in Tables A6.1 and A6.2 in Appendix 6 of the UN RTDG, Manual of Tests and Criteria.
f) Self-heating properties: A study on self-heating behaviour of the substance does not need to be conducted. In this compound, the Iron ion is already in its maximum oxidation stage of +III. Further oxidation is not possible. Therefore, this substance will not react with oxygen or air, and self-heating of the substance up to 400 °C is excluded.

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

Justification for classification or non-classification

Manganese ferrite black spinel is not flammable, it has no pyrophoric properties, no flammability in contact with water, is not a self-heating and a self-reactive substance, is not an organic peroxide; and hence no classification according to both Directive 67/548/EEC and GHS (Regulation EC 1272/2008) is required.

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