Other names: Ferric oxide, Hematite, Ferric ironRed iron oxide, Rouge, Maghemite, Colcothar, Iron sesquioxide, Rust, Ochre, Iron oxide dust and fume (as Fe), Iron oxide red, Red oxide, Anhydrous ferric oxide, Iron (III) oxide, Diiron trioxide, Iron trioxide, Ferric sesquioxide, Iron(III) oxide [Iron oxide dust and fume (as Fe)], Iron(III)oxide [Rouge]
Appearance: Red-brown solid ; Reddish brown-to-black crystals or powder ; Reddish-brown solid. [Note: Exposure to fume may occur during the arc-welding of iron.] ; A fine, red powder of ferric oxide. [Note: Usually used in cake form or impregnated in paper or cloth.]
Appearance: Colorless gas ; Colourless gas or compressed liquefied gas with pungent odour ; Colorless gas with a characteristic, irritating, pungent odor. [Note: A liquid below 14°F. Shipped as a liquefied compressed gas.]