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InventoryRef cosing-live-1019252024-06-26

BISMUTH IRON OXIDE

Bismuth Iron Oxides is the inorganic compound prepared by reacting bismuth nitrate in acidic conditions in presence of iron nitrate.

BISMUTH IRON OXIDE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 1304-76-3

CAS 1304-76-3PubChem CID 14776

Bismuth oxide (Bi2O3)

IUPAC name: oxo(oxobismuthanyloxy)bismuthane

Molecular formula: Bi2O3
Molecular weight: 465.959 g/mol
Exact mass: 465.94554 Da
Topological polar surface area: 43.4 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

RefChem:120428Dibismuth trioxideBismutum-oxydatumWimut(III)-oxidBismuth(3+) oxideBismuth oxide (BiO1.5)Bismuth sesquioxide (Bi2O3)EINECS 215-134-7

13 more reported names

Dibismoxane-1,3-dioneC.I. 77160UNII-A6I4E79QF1Bismuth(III) oxide, 99.99%Bismuth(III) oxide, p.a., 98%Tox21_112312Bismuth Oxide Nanoparticle DispersionCAS-1304-76-3Bismuth(III) oxide, purum, >=98.0% (KT)EC 215-134-7Bismuth(III) oxide, powder, 99.999% trace metals basisBismuth(III) oxide, nanopowder, 90-210 nm particle size, 99.8% trace metals basisBismuth(III) oxide, ReagentPlus(R), powder, 10 mum, 99.9% trace metals basis

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID8046537

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Official European Commission record

CosIng substance ID: 101925
Published in the Official Journal: Yes
Recorded by the Commission: 2024-06-26

Open this entry in the official CosIng database

Fields as published by the European Commission. The link opens the entry itself, not a search for it.

Inventory details for BISMUTH IRON OXIDE

INCI name

BISMUTH IRON OXIDE

Description

Bismuth Iron Oxides is the inorganic compound prepared by reacting bismuth nitrate in acidic conditions in presence of iron nitrate.

Record provenance

Inventory reference: cosing-live-101925
Imported identity: BISMUTH IRON OXIDE
Source update: 2024-06-26

European Commission CosIng source notes

Annex records for BISMUTH IRON OXIDE

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Key data

CAS

39374-57-7/ 1304-76-3

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Restriction

—

Function

OPACIFYING: Reducing transparency or translucency of cosmetics.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#3740 · BISMUTH IRON OXIDE

Ingredients with overlapping formulation functions

BARIUM SULFATECOLORANT, OPACIFYING

BEHENAMIDEOPACIFYING, VISCOSITY CONTROLLING

BEHENIC ACIDCLEANSING, OPACIFYING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

BENZIMIDAZOLE DIAMOND AMIDOETHYL UREA CARBAMOYL PROPYL POLYMETHYLSILSESQUIOXANECOLORANT, OPACIFYING

BISMUTH SUBNITRATEABSORBENT, OPACIFYING

BORAGE SEED OIL POLYGLYCERYL-4 ESTERSOPACIFYING, SOLVENT, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

BORON NITRIDEABSORBENT, OPACIFYING, SKIN CONDITIONING

BUTYL ACRYLATE/C6-14 PERFLUOROALKYLETHYL ACRYLATE/MERCAPTOPROPYL DIMETHICONE CO…FILM FORMING, OPACIFYING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How BISMUTH IRON OXIDE appears in the CosIng inventory

The CosIng inventory lists BISMUTH IRON OXIDE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

BISMUTH IRON OXIDE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

BISMUTH IRON OXIDE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, BISMUTH IRON OXIDE carries the following function designation(s):

OPACIFYING

CAS 39374-57-7/ 1304-76-3 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for BISMUTH IRON OXIDE

This page reproduces the CosIng inventory entry for BISMUTH IRON OXIDE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research BISMUTH IRON OXIDE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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Tools & next steps

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