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2-Methylallylmagnesium chloride

Also known as: 2-Methylallylmagnesium chloride, Chloro(2-methyl-2-propen-1-yl)magnesium, Methallylmagnesium chloride, 2-Methylprop-2-en-1-ylmagnesium chloride, MFCD00674003

2-Methylallylmagnesium chloride (CAS 5674-01-1) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H7ClMg and a molecular weight of 114.85600 g/mol. Key properties include a boiling point of 65-67 °C, a density of 1.301g/cm3 and a flash point of -21.1 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H261 and H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
5674-01-1
Jingsj CID
J-43309-0
Molecular Formula
C4H7ClMg
Molecular Weight
114.85600 g/mol
Category
Aliphatic Hydrocarbons
Last updated
11/2/2026

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Physicochemical Properties

Boiling Point65-67 °C
Density1.301g/cm3
Flash Point-21.1 °C
Exact Mass114.00900
LogP2.21960
AppearanceLiquid | Clear colorless to slightly yellow
Refractive Index1.637
Storage Conditions2~8 ℃

GHS Safety & Compliance

Flammable / Corrosion / Irritant / Health HazardSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H261
  • H302 — Harmful if swallowed
  • H314 — Causes severe skin burns and eye damage
  • H335 — May cause respiratory irritation
  • H351 — Suspected of causing cancer

Frequently Asked Questions

What is the CAS number of 2-Methylallylmagnesium chloride?

The CAS number of 2-Methylallylmagnesium chloride is 5674-01-1.

What are the molecular formula and molecular weight of 2-Methylallylmagnesium chloride?

2-Methylallylmagnesium chloride has molecular formula C4H7ClMg and molecular weight 114.85600 g/mol.

Is 2-Methylallylmagnesium chloride hazardous?

2-Methylallylmagnesium chloride has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H261; H302 — Harmful if swallowed.

What are the upstream and downstream products of 2-Methylallylmagnesium chloride?

For 2-Methylallylmagnesium chloride, Upstream Products: 3-Chloro-2-methyl-1-propene; Downstream Products: 5-methylhex-5-enoic acid, 3-Methyl-2-butenoic acid, 2-Aminophenol.

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

Last updated:

How to cite: Jingsj. "2-Methylallylmagnesium chloride (CAS 5674-01-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43309-0 (accessed 2026-11-09).

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