Ruthenium(IV) oxide, anhydrous
CAS 12036-10-1
Anhydrous RuO₂ is the conductive oxide workhorse — the functional phase in thick-film chip resistors, the active component of industrial DSA anode coatings, and the benchmark pseudocapacitive material in supercapacitor research.
Typical specification
| Molecular formula | RuO₂ |
|---|---|
| Molecular weight | 133.07 |
| Purity (metals basis) | ≥ 99.9% |
| Ruthenium content | ≥ 75% |
| Appearance | Blue-black powder |
| Particle size | Grade-dependent; specified per lot |
| HS code (export) | 2843900099 |
Lot-specific COA issued with every shipment. SDS and ICP elemental impurity data available on request.
Where RuO₂ is used
Thick-film resistor pastes
The conductive phase in ruthenate resistor pastes for chip resistors and hybrid circuits — an electronics-supply-chain staple demanding tight particle-size and purity control.
Electrodes and supercapacitors
The active oxide in coated-titanium anodes for chlorine and oxygen evolution, and the reference pseudocapacitive electrode material in energy-storage research.
Storage and shipping
Storage. Store sealed and dry; inert under normal handling. Avoid strong oxidizers and temperatures generating volatile RuO₄.
Shipping. Not classified as dangerous goods; ships with SDS.
Packaging. 5 g · 25 g · 100 g · 500 g
Synonyms
- Ruthenium dioxide
- Ruthenium oxide anhydrous
- RuO2 powder
Frequently asked questions
How is pricing structured?
Quotes reference the day's ruthenium price on assayed contained metal plus a stated conversion charge; ruthenium's low price among PGMs makes it the economical choice wherever it can do the job.
What documentation is included?
Every lot ships with a certificate of analysis stating assayed metal content, plus an English SDS. ICP trace-metal panels are available on request.
Do you take back spent material?
Yes — spent catalyst, coating residues and off-spec lots are assayed on receipt and the recovered ruthenium credited against your next order.