Mineral Fillers & Pigments Available — Bulk Only

Iron Oxide Black (Synthetic, CI 77499)

Fe2O3
CAS 12227-89-3 · Formula Fe3O4 · MW 231.53 g/mol

A synthetic black iron-oxide pigment supplied in bulk for coatings, plastics, and construction coloring. It is used as a colorant in paints and coatings, plastics, construction materials, and cosmetics, and serves as a filler and adsorbent.

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HS Code
2821.10
At a Glance
Material Family
Mineral Fillers & Pigments
Record Type
Pure compound
Primary Role
Color / Pigmentation
Functional Roles
CI 77499
COLORANT
Applications & Use Cases
  • Pigment: black colorant for paints, coatings, and plastics
  • Construction colorant: coloring of concrete and building products
  • Cosmetic colorant: CI 77499 in color cosmetics
  • Filler/adsorbent: functional filler and adsorbent applications
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.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2821 . 10
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.21
Internationally harmonized (WCO HS)
Subheading 2821.10
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
12227-89-3
Molecular Formula
Fe3O4
Molecular Weight
231.53 g/mol
IUPAC Name
oxoiron;oxo(oxoferriooxy)iron
INCI Name
CI 77499
PubChem CID
InChI Key
SZVJSHCCFOBDDC-UHFFFAOYSA-N
Synonyms & Trade Names
Ferriferrous Oxide Oxide, Ferriferrous Oxide, Ferrosoferric Black Iron Oxide C.I. 77499 EPT 500 ferric ferrous oxide Ferrosoferric Oxide Iron (II, III) Oxide Iron ores, magnetite Iron oxide (Fe3O4) iron(II) diiron(III) oxide Magnetic Black
Full Description

Synthetic black iron oxide (CAS 12227-89-3) is an iron-oxide pigment (Colour Index 77499). It is used as a colorant in paints and coatings, plastics, construction materials, and cosmetics, and serves as a filler and adsorbent.

Frequently Asked Questions

What is synthetic black iron oxide used for?

Synthetic black iron oxide (CAS 12227-89-3, CI 77499) is an iron-oxide pigment used as a black colorant in paints and coatings, plastics, construction materials, and cosmetics. It also serves as a functional filler and adsorbent.

Which iron oxide is black?

The black iron oxide is magnetite, Fe3O4, indexed as CI 77499 (CAS 12227-89-3). This differs from red Fe2O3 (CI 77491) and yellow iron oxide-hydroxide (CI 77492).

What is the chemical formula and Colour Index for black iron oxide?

Synthetic black iron oxide is Fe3O4 (magnetite) with Colour Index CI 77499 and CAS 12227-89-3. These identifiers are listed on the CoA for specification matching.

Why choose synthetic over natural black iron oxide?

Synthetic grades are manufactured for consistent particle size, tint strength, and purity batch to batch, which natural mined oxides vary on. Consult the CoA for the specific grade's assay and particle data.

Is synthetic black iron oxide available in bulk and how is it priced?

RawSource supplies synthetic black iron oxide in bulk to manufacturers. Pricing depends on grade and order volume, so request a bulk quote with your target quantity 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.