A red iron-oxide (hematite) pigment and polishing abrasive supplied in bulk for industrial color and finishing. It is used as a pigment for paints, paper, ceramics, and construction, as a polishing abrasive (jeweler's rouge), and as a catalyst.
▸Pigment: red colorant for paints, ceramics, and construction
▸Polishing abrasive: jeweler's rouge for glass and metals
▸Catalyst: iron-oxide catalyst in chemical processing
▸Magnetic media: component in magnetic materials
Physical Properties
Melting Point
Iron 1462 °C
Density
5.25 g/cu cm
Solubility
Soluble in acids; insoluble in water, alcohol, ether
Vapor Pressure
0 mm Hg (approximate)
Safety & Handling
Full SDS available on request
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Iron trioxideIron oxide, rediron(3+) oxideAnhydrous Ferric OxideAnhydrous Iron (III) OxideFerrum OxydatumIron oxide,Hematite 8124Anhydrous Iron (III)Ferric oxide (anhydrous)11554 RedAnchred standardAnhydrous iron oxide
Full Description
Red iron oxide (CAS 1309-37-1) is iron(III) oxide, Fe2O3 (Colour Index 77491). It is used as a pigment for paints, paper, ceramics, and construction, as a polishing abrasive (jeweler's rouge), and as a catalyst.
Frequently Asked Questions
What is red iron oxide used for?
Red iron oxide (CAS 1309-37-1) is iron(III) oxide, Fe2O3 (Colour Index 77491). It is used as a red pigment for paints, paper, ceramics, and construction, as a polishing abrasive (jeweler's rouge), as a catalyst, and as a component in magnetic materials.
Is red iron oxide a dye or a pigment?
It is a pigment, not a dye. Pigments such as Fe2O3 (CI 77491) are insoluble particles that color by dispersion, distinguishing it from soluble synthetic dyes like FD&C Red 40.
Is red iron oxide natural or synthetic?
Iron(III) oxide occurs naturally as the mineral hematite but is also produced synthetically for high-purity, consistent pigment grades. The High Purity AP grade is a manufactured product; consult the CoA for purity and particle data.
What is the chemical formula and Colour Index for red iron oxide?
The formula is Fe2O3 (iron(III) oxide), with Colour Index Pigment Red designation CI 77491 and CAS 1309-37-1. These identifiers appear on the CoA for specification matching.
Is red iron oxide available in bulk and how is it priced?
RawSource supplies high-purity red iron oxide in bulk to manufacturers. Pricing depends on grade, purity, and order volume, so request a bulk quote with your specification along with a CoA and SDS.
Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.
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