Mineral Fillers & Pigments Available — Bulk Only

Chromium(III) Oxide (Chromium Oxide Green, Cr2O3)

Cr2O3
CAS 1308-38-9 · Formula Cr2O3 · MW 151.990 g/mol

A heat- and light-stable green oxide spanning pigments, abrasives, refractories and chromium metallurgy. Its hardness suits it to abrasive and polishing compounds and its thermal stability to refractory materials.

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HS Code
2819.90
At a Glance
Material Family
Mineral Fillers & Pigments
Record Type
Pure compound
Primary Role
Color / Pigmentation
Functional Roles
CI 77288
COLORANT
Applications & Use Cases
  • Green pigment: Colorfast green for paints, inks, glass and ceramics.
  • Abrasive/polishing: Hard particle for polishing and lapping compounds.
  • Refractory material: Thermally stable component for refractories.
  • Metallurgy: Feedstock for chromium metal and aluminum-chromium master alloys.
  • Catalyst: Catalyst for organic and inorganic reactions.
Physical Properties
Physical Description
Pellets or Large Crystals, Other Solid; Pellets or Large Crystals; Dry Powder, Pellets or Large Crystals; Dry Powder; Other Solid; Dry Powder, Other Solid
Appearance
Light to dark green, fine, hexagonal crystals
Boiling Point
4000 °C
Melting Point
2435 °C
Solubility
Practically insoluble in alcohol, acetone; slightly soluble in acids, alkalies
Density
5.22 at 25 °C
pH
Trivalent chromium compounds are amphoteric
Refractive Index
Index of refraction: 2.551
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
2819 . 90
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.19
Internationally harmonized (WCO HS)
Subheading 2819.90
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
1308-38-9
Molecular Formula
Cr2O3
Molecular Weight
151.990 g/mol
IUPAC Name
oxo(oxochromiooxy)chromium
INCI Name
CI 77288
PubChem CID
InChI Key
QDOXWKRWXJOMAK-UHFFFAOYSA-N
Synonyms & Trade Names
Chromium(III) oxide Chromia Dichromium trioxide CHROMIC OXIDE Chrome Green Chrome oxide Green chromium oxide Green cinnabar Chrome ochre Chromium Oxide Green Anadonis Green Casalis Green Green rouge Chrome Ocher Leaf green Chromium(3+) oxide Levanox green ga chromium (III) oxide Oxide of chromium Green oxide of chromium
Full Description

Chromium(III) oxide (Cr2O3, CAS 1308-38-9) is a stable green inorganic oxide used principally as a colorfast green pigment in paints, inks, glass and ceramics. Its hardness suits it to abrasive and polishing compounds and its thermal stability to refractory materials. It is also used in metallurgy to produce chromium metal and aluminum-chromium master alloys, and as a catalyst.

Frequently Asked Questions

What is chromium(III) oxide used for?

Chromium(III) oxide (Cr2O3, CAS 1308-38-9) is used principally as a colorfast green pigment in paints, inks, glass, and ceramics. Its hardness suits it to abrasive and polishing compounds, its thermal stability to refractories, and it is also used in metallurgy to make chromium metal and aluminum-chromium master alloys, and as a catalyst.

What gives chromium(III) oxide its green color?

Cr2O3 is a stable inorganic oxide whose Cr(III) ions produce a characteristic colorfast green, which is why it is valued as a durable pigment in coatings, ceramics, and glass. The pigment is prized for its lightfastness and chemical stability.

Is chromium(III) oxide water soluble?

Chromium(III) oxide is an inorganic oxide that is essentially insoluble in water, which contributes to its stability and colorfastness as a pigment. Solubility and handling data are in the SDS. Request it for the grade supplied.

What is the HS code for chromium(III) oxide?

Chromium(III) oxide falls under HS 2819.90 (chromium oxides and hydroxides: other). RawSource supplies it as pigment-grade and technical-grade material. Request CoA and SDS for specification and particle-size data.

What is the cost of bulk chromium(III) oxide?

Bulk pricing depends on grade, particle size, packaging, and volume. RawSource quotes industrial quantities directly rather than listing a fixed price. Send your grade and volume requirements for a current quote and lead time.

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.