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bis(pentamethylcyclopentadienyl)magnesium

Also known as: bis(1,2,3,4,5-pentamethyl-2,4-cyclopentadien-1-yl)magnesium, decamethylmagnesocene, Magnesium, bis(1,2,3,4,5-pentamethyl-2,4-cyclopentadien-1-yl)-, bis(pentamethylcyclopentadienyl)magnesium(II), Bis(pentamethylcyclopentadienyl)magnesium, elec. gr. (99.999%-Mg) PURATREM

bis(pentamethylcyclopentadienyl)magnesium (CAS 74507-64-5) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C20H30Mg and a molecular weight of 294.75700 g/mol. Key property: a melting point of 230ºC (dec.)(lit.). It is classified under GHS with signal word Danger and hazard statements H250. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
74507-64-5
Jingsj CID
J-12316-0
Molecular Formula
C20H30Mg
Molecular Weight
294.75700 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Melting Point230ºC (dec.)(lit.)
Exact Mass294.22000
LogP5.94400

GHS Safety & Compliance

FlammableSignal word: Danger
  • H250

Customs & Trade Information

HS Code2931900090
Summary2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of bis(pentamethylcyclopentadienyl)magnesium?

The CAS number of bis(pentamethylcyclopentadienyl)magnesium is 74507-64-5.

What are the molecular formula and molecular weight of bis(pentamethylcyclopentadienyl)magnesium?

bis(pentamethylcyclopentadienyl)magnesium has molecular formula C20H30Mg and molecular weight 294.75700 g/mol.

Is bis(pentamethylcyclopentadienyl)magnesium hazardous?

bis(pentamethylcyclopentadienyl)magnesium has GHS signal word Danger and hazard statements H250.

What are the upstream and downstream products of bis(pentamethylcyclopentadienyl)magnesium?

For bis(pentamethylcyclopentadienyl)magnesium, Upstream Products: Pentamethylcyclopentadiene, Isopropylmagnesium 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. "bis(pentamethylcyclopentadienyl)magnesium (CAS 74507-64-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12316-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.