Molekula
Iridium dioxide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Iridium dioxide (IrO2) is a black, crystalline powder known for its exceptional electrical conductivity and catalytic properties, widely used in electrochemical applications, including chlor-alkali production, water electrolysis, and as an electrode material in sensors and fuel cells. This high-performance oxide exhibits superior stability under harsh conditions, making it ideal for industrial processes requiring durable, corrosion-resistant materials. CAS 12030-49-8, molecular formula IrO2, molecular weight 224.22 g/mol. Store at ambient conditions in a dry, well-ventilated area. Hazardous: Signal word Danger. It is an oxidiser that may intensify fire, causes skin irritation and serious eye irritation, and may cause long-lasting harmful effects to aquatic life. Molekula supplies iridium dioxide 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
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.
Prices exclude VAT/sales tax and shipping.
Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 5.1 |
| Packing Group | II |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90036159 |
| CAS Number | 12030-49-8 |
| IUPAC Name | dioxoiridium |
| EC Number | 234-743-9 |
| Molecular Formula | IrO2 |
| Molecular Weight | 224.22 |
| Exact Mass | 224.9528 |
| SMILES | O=[Ir]=O |
| InChIKey | HTXDPTMKBJXEOW-UHFFFAOYSA-N |
| InChI | InChI=1S/Ir.2O |
| PubChem CID | 82821 |
| UN Number | UN1479 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28439000 |
| Tariff Code | 2843909000 |
Safety & GHS
-
Oxidizing
GHS03
-
Health Hazard
GHS07
Hazard statements
- H272 May intensify fire; oxidizer
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H413 May cause long lasting harmful effects to aquatic life
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- Bis(oxido)iridium
- Ekuserodo B
- Iridium oxide
- Iridium oxide (IrO2)
- Iridium(4)oxide
- iridium(iv) oxide powder
- Iridium(IV) oxide, Premion?
Frequently asked questions
What is iridium dioxide (IrO₂) commonly used for?
Iridium dioxide is primarily used as an electrocatalyst in chloralkali production, as a conductive coating in semiconductor manufacturing, and in certain types of gas sensors and fuel cells.
What is the chemical formula and molecular weight of iridium dioxide?
The chemical formula is IrO₂, and the molecular weight is 224.22 g/mol.
How should iridium dioxide be stored?
Store at ambient temperature in a cool, dry place, away from incompatible substances. Ensure proper ventilation and follow local hazardous material regulations.
What grades or purities of iridium dioxide does Molekula supply?
Molekula supplies high-purity iridium dioxide (typically ≥99.9% metal basis) suitable for industrial and research applications.
Can Molekula supply iridium dioxide in bulk quantities?
Yes, Molekula can provide bulk quantities of iridium dioxide upon request, depending on availability and customer requirements.
What documentation comes with an order of iridium dioxide?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a packing list. Additional documentation, such as a technical data sheet, may be provided upon request.
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.