Ethynylmagnesium bromide
Also known as: Ethynylmagnesium bromide solution, Bromo(ethynyl)magnesium, Ethynylbromomagnesium, Magnesium, bromoethynyl-, ethynylmagnesium bromide solution, magnesium,ethyne,bromide, MFCD00075342, EthynylMagnesiuM broMide, 0.5 M solution in THF, SpcSeal, Ethynylmagnesium bromide, 0.5 M solution in THF, SpcSeal, Ethynylmagnesium bromide, 0.5 M solution in tetrahydrofuran
Ethynylmagnesium bromide (CAS 4301-14-8) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C2HBrMg and a molecular weight of 129.238 g/mol. Key properties include a density of 0.94 g/mL at 25ºC and a flash point of -28.9 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 4301-14-8
- Jingsj CID
- J-20321-4
- Molecular Formula
- C2HBrMg
- Molecular Weight
- 129.238 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Density | 0.94 g/mL at 25ºC |
|---|---|
| Flash Point | -28.9 °C |
| Exact Mass | 127.911194 |
| LogP | 0.97200 |
| Appearance | Liquid | Colorless to yellow to brown to gray |
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. 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 Ethynylmagnesium bromide?
The CAS number of Ethynylmagnesium bromide is 4301-14-8.
What are the molecular formula and molecular weight of Ethynylmagnesium bromide?
Ethynylmagnesium bromide has molecular formula C2HBrMg and molecular weight 129.238 g/mol.
What are the upstream and downstream products of Ethynylmagnesium bromide?
For Ethynylmagnesium bromide, Upstream Products: Ethylmagnesium bromide, Acetylene, 3-Bromopropyne; Downstream Products: 3-Methyl-1-penten-4-yn-3-ol, 4-methyl-1-pentyn-3-ol, 3-Ethyl-1-heptyn-3-ol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Ethynylmagnesium bromide (CAS 4301-14-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-20321-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.