Molekula
Bismuth (III) oxide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Bismuth (III) oxide is a white to yellowish powder used in ceramics, glass manufacturing, and as a catalyst in chemical reactions. It is also employed in radiation shielding and electronic components due to its high density and low toxicity. Available in powder form with a purity of 99.9%, it has a molecular weight of 465.96 g/mol, a CAS number of 1304-76-3, and is stable at ambient storage conditions. Molekula supplies Bismuth (III) oxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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500 g — £116.70 per pack ex VAT · £140.04 inc. VAT
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
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Specifications
| Property | Value |
|---|---|
| Appearance | Yellow powder |
| Identification | Conforms to reference |
| Assay | 98.0% - 102.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 49280974 |
| CAS Number | 1304-76-3 |
| IUPAC Name | oxo(oxobismuthanyloxy)bismuthane |
| EC Number | 215-134-7 |
| Molecular Formula | Bi2O3 |
| Molecular Weight | 465.96 |
| Exact Mass | 465.9455 |
| SMILES | O=[Bi]O[Bi]=O |
| InChIKey | WMWLMWRWZQELOS-UHFFFAOYSA-N |
| InChI | InChI=1S/2Bi.3O |
| PubChem CID | 14776 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2825909000 |
| Tariff Code | 2825908590 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Bismuth oxide (Bi2O3)
- Bismuth oxide (BiO1.5)
- Bismuth sesquioxide (Bi2O3)
- Bismuth(3+) oxide
- Bismutum-oxydatum
- C.I. 77160
- Dibismoxane-1,3-dione
- Dibismuth trioxide
- oxo(oxobismuthanyloxy)bismuthane
- Wimut(III)-oxid
Frequently asked questions
What is Bismuth (III) oxide used for?
It is used in the production of ceramic materials, optical glasses, and as a catalyst in chemical reactions.
What is the chemical formula and molecular weight of Bismuth (III) oxide?
The formula is Bi2O3 and the molecular weight is 465.96 g/mol.
How should Bismuth (III) oxide be stored?
It should be stored at ambient temperature, away from moisture and incompatible substances.
What grade of Bismuth (III) oxide does Molekula supply?
Molekula supplies Bismuth (III) oxide in high purity grade, suitable for laboratory and industrial applications.
Can Molekula supply Bismuth (III) oxide in bulk?
Yes, Molekula can supply Bismuth (III) oxide in bulk quantities upon request.
What documentation comes with a purchase of Bismuth (III) oxide?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.