Bis(pentamethylcyclopentadienyl)osmium

双(五甲基环戊二烯)锇

Also known as: Decamethylosmocene, Osmium(2+) bis(1,2,3,4,5-pentamethylcyclopenta-2,4-dienide), bis(pentamethylcyclopentadienyl)osmium(II), Osmocene, decamethyl- (9CI), MFCD00058711, EINECS 202-873-5

Bis(pentamethylcyclopentadienyl)osmium (CAS 100603-32-5) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C20H30Os and a molecular weight of 460.68200 g/mol. It is also known as Decamethylosmocene, Osmium(2+) bis(1,2,3,4,5-pentamethylcyclopenta-2,4-dienide) and bis(pentamethylcyclopentadienyl)osmium(II). Key properties include a boiling point of 170.2ºC at 760 mmHg and a flash point of 44.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
100603-32-5
Jingsj CID
J-1170110-1
Molecular Formula
C20H30Os
Chinese Name
双(五甲基环戊二烯)锇
Molecular Weight
460.68200 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point170.2ºC at 760 mmHg
Flash Point44.4ºC

Frequently Asked Questions

What is the CAS number of Bis(pentamethylcyclopentadienyl)osmium?

The CAS number of Bis(pentamethylcyclopentadienyl)osmium is 100603-32-5.

What are the molecular formula and molecular weight of Bis(pentamethylcyclopentadienyl)osmium?

Bis(pentamethylcyclopentadienyl)osmium has molecular formula C20H30Os and molecular weight 460.68200 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Bis(pentamethylcyclopentadienyl)osmium (CAS 100603-32-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1170110-1 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.