what is the {NFPA Instability} for {iron(III) oxide} has {safety classification and labelling} as {NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response} ?
What is the correct safety classification of iron(III) oxide as per the NFPA 704:  Standard System for the Identification of Hazards of Materials for Emergency Response?
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What is the correct classification of iron oxide?