RUTHENIUM TETROXIDE
Also known as: 0.5%stabilizedaqueoussolution, EINECS 243-813-8, RUTHENIUM (VIII) OXIDE, RuO4, Ruthenium oxide (RuO4), Ruthenium oxide (RuO4), (T-4)-, Ruthenium tetroxide, Ruthenium(VIII) oxide, ruthenium oxide, ruthenium tetraoxide, ruthenium(viii)oxide(0.5%stabilizedaqueoussolution), rutheniumtetraoxide, tetraoxoruthenium
RUTHENIUM TETROXIDE (CAS 20427-56-9) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula O4Ru and a molecular weight of 165.06800 g/mol. Key properties include a melting point of 25.4ºC, a boiling point of 40ºC (other sources give 108ºC; presumably40ºC is at reduced pressure) and a density of 3.290. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20427-56-9
- Jingsj CID
- J-1084973-7
- Molecular Formula
- O4Ru
- Molecular Weight
- 165.06800 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 25.4ºC |
|---|---|
| Boiling Point | 40ºC (other sources give 108ºC; presumably40ºC is at reduced pressure) |
| Density | 3.290 |
| Exact Mass | 165.88400 |
| PSA | 68.28000 |
| Appearance | Crystalline Powder | White |
| Storage Conditions | Refrigerator (+4°C) |
| Additional Property | 2.03g/100mL H2O (20°C); very soluble CCl4, other chlorinated hydrocarbons [MER06] [KIR82] |
Frequently Asked Questions
What is the CAS number of RUTHENIUM TETROXIDE?
The CAS number of RUTHENIUM TETROXIDE is 20427-56-9.
What are the molecular formula and molecular weight of RUTHENIUM TETROXIDE?
RUTHENIUM TETROXIDE has molecular formula O4Ru and molecular weight 165.06800 g/mol.
What are the upstream and downstream products of RUTHENIUM TETROXIDE?
For RUTHENIUM TETROXIDE, Upstream Products: Ruthenium; Downstream Products: Ruthenium, Ruthenium(III) bromide, ruthenium chloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "RUTHENIUM TETROXIDE (CAS 20427-56-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1084973-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.