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Physical & Chemical properties

Flammability

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Description of key information

a) Flammability: In accordance with section 1 of REACH Annex XI, the study does not need to be conducted. In this compound, the Iron ion is already in its maximum oxidation stage of +III. The Zinc ion is already in its maximum oxidation stage of +II. Further oxidation is not possible. Therefore, this substance will not react with oxygen or air. The substance is not flammable.
b) Pyrophoric properties: In accordance with section 1 of REACH Annex XI and CLP Annex I, 2.9.4 and 2.10.4, a study on pyrophoric properties does not need to be conducted as it is scientifically unjustified. Based on experience during handling and use, no pyrophoric properties were observed and the structure does not give a reference to pyrophoric properties.
c) Flammability on contact with water: In accordance with section 1 of REACH Annex XI, a study does not need to be conducted as the substance is an inert oxide which does not react with water. Flammable gases are not formed in contact with water.
d) Self- ignition temperature: In zinc ferrite, 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 cannot occur.
e) 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, zinc ferrite is not an organic peroxide.
f)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.

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

Justification for classification or non-classification

Zinc ferrite 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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