1-Bromo-2-pentyne
Also known as: 1-bromopent-2-yne, 2-Pentynyl bromide, 2-Pentyn-1-yl bromide, 2-Pentyne, 1-bromo-, 3-ethylpropargyl bromide, 5-bromopent-3-yne, EINECS 240-451-2, MFCD00236363, TIMTEC-BB SBB008834, pent-2-ynyl bromide
1-Bromo-2-pentyne (CAS 16400-32-1) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H7Br and a molecular weight of 147.01300 g/mol. Key properties include a boiling point of 142.5ºC at 760mmHg, a density of 1.366g/cm3 and a flash point of 45.1ºC. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 16400-32-1
- Jingsj CID
- J-1398399-8
- Molecular Formula
- C5H7Br
- Molecular Weight
- 147.01300 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 142.5ºC at 760mmHg |
|---|---|
| Density | 1.366g/cm3 |
| Flash Point | 45.1ºC |
| Exact Mass | 145.97300 |
| LogP | 1.79470 |
| Appearance | Liquid | Clear yellow |
| Vapor Pressure | 7mmHg at 25°C |
| Refractive Index | n20/D 1.498(lit.) |
| Additional Property | Miscible with ether |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2903399090 |
|---|---|
| Summary | 2903399090. brominated,fluorinated or iodinated derivatives of acyclic hydrocarbons. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1-Bromo-2-pentyne?
The CAS number of 1-Bromo-2-pentyne is 16400-32-1.
What are the molecular formula and molecular weight of 1-Bromo-2-pentyne?
1-Bromo-2-pentyne has molecular formula C5H7Br and molecular weight 147.01300 g/mol.
Is 1-Bromo-2-pentyne hazardous?
1-Bromo-2-pentyne has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Bromo-2-pentyne (CAS 16400-32-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1398399-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.