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Iron(III) Oxide (Rust) (Fe₂O₃) — Properties, Uses & Safety

⚙️ Metal Compounds & Salts

Overview

The reddish-brown oxide of iron commonly known as rust; also the primary ore of iron (hematite) and a red pigment.

IUPAC Name: iron(3+) oxide
CAS Number: 1309-37-1
PubChem CID: 518696
Molecular Formula: Fe₂O₃
Molar Mass: 159.688 g/mol
State at STP: solid
Appearance: Red-brown powder

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