(2E)-1,4-dibromo-2-butene
Also known as: (E)-1,4-Dibromo-2-butene, (E)-1,4-dibromobut-2-ene, 1,4-dibromo-, trans-, trans-Dibromobutene, trans-1,4-Dibromobut-2-ene, 1,4-trans-Dibromobutene-2, 1,4-Dibromo-2-butene, E, 2-Butene, 1,4-dibromo-, (2E)-, 2-Butene, 1,4-dibromo-, (E)-, 2-Butene, 1,4-dibromo-, trans-, EINECS 212-472-7, MFCD07783464
(2E)-1,4-dibromo-2-butene (CAS 821-06-7) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H6Br2 and a molecular weight of 213.898 g/mol. Key properties include a melting point of 48-53ºC, a boiling point of 203.0±0.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 71.9±21.0 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 821-06-7
- Jingsj CID
- J-47121-6
- Molecular Formula
- C4H6Br2
- Molecular Weight
- 213.898 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 48-53ºC |
|---|---|
| Boiling Point | 203.0±0.0 °C at 760 mmHg |
| Density | 1.9±0.1 g/cm3 |
| Flash Point | 71.9±21.0 °C |
| Exact Mass | 211.883606 |
| LogP | 2.41 |
| Vapor Pressure | 0.4±0.3 mmHg at 25°C |
| Refractive Index | 1.543 |
| Additional Property | slightly soluble |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H314 — Causes severe skin burns and eye damage
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 (2E)-1,4-dibromo-2-butene?
The CAS number of (2E)-1,4-dibromo-2-butene is 821-06-7.
What are the molecular formula and molecular weight of (2E)-1,4-dibromo-2-butene?
(2E)-1,4-dibromo-2-butene has molecular formula C4H6Br2 and molecular weight 213.898 g/mol.
Is (2E)-1,4-dibromo-2-butene hazardous?
(2E)-1,4-dibromo-2-butene has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of (2E)-1,4-dibromo-2-butene?
For (2E)-1,4-dibromo-2-butene, Upstream Products: butadiene, 2-Bromobutane, trans-2-Butene-1,4-diol; Downstream Products: 3-Butene-1,2-diol, trans-2-Butene-1,4-diol, 3,4-Diacetoxy-1-butene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(2E)-1,4-dibromo-2-butene (CAS 821-06-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47121-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.