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tert-Butylmagnesium chloride

Also known as: (1,1-Dimethylethyl)magnesium chloride, tert-Butylmagnesium chloride, magnesium chloride 2-methylpropan-2-ide (1:1:1), tert-butylmagnesium(1+) chloride

tert-Butylmagnesium chloride (CAS 677-22-5) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H9ClMg and a molecular weight of 116.87200 g/mol. Key properties include a melting point of 46ºC to 50ºC, a boiling point of 1.1 °C, a density of 0.931 g/mL at 25 °C and a flash point of 1.1 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H250 and H260. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
677-22-5
Jingsj CID
J-1367683-0
Molecular Formula
C4H9ClMg
Molecular Weight
116.87200 g/mol
Category
Organohalogen Compounds
Last updated
11/2/2026

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Physicochemical Properties

Melting Point46ºC to 50ºC
Boiling Point1.1 °C
Density0.931 g/mL at 25 °C
Flash Point1.1 °C
Exact Mass116.02400
LogP2.44360

GHS Safety & Compliance

Flammable / CorrosionSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H250
  • H260
  • H314 — Causes severe skin burns and eye damage

Frequently Asked Questions

What is the CAS number of tert-Butylmagnesium chloride?

The CAS number of tert-Butylmagnesium chloride is 677-22-5.

What are the molecular formula and molecular weight of tert-Butylmagnesium chloride?

tert-Butylmagnesium chloride has molecular formula C4H9ClMg and molecular weight 116.87200 g/mol.

Is tert-Butylmagnesium chloride hazardous?

tert-Butylmagnesium chloride has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H250; H260.

What are the upstream and downstream products of tert-Butylmagnesium chloride?

For tert-Butylmagnesium chloride, Upstream Products: tert-butyl chloride, Trichloropropylsilane; Downstream Products: 2,2-DIMETHYLHEPTANE, 1-tert-Butyl-4-chlorobenzene, 14-Heptacosanone.

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

Last updated:

How to cite: Jingsj. "tert-Butylmagnesium chloride (CAS 677-22-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1367683-0 (accessed 2026-11-09).

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