(E)-1,4-Dibromobut-2-ene
- CAS No.
- 821-06-7
- Chemical Name:
- (E)-1,4-Dibromobut-2-ene
- Synonyms
- trans-1,4-Dibromo-2-butene;Dibromobutene;4-DibroMo-2-butene;1,4-Dibromo-1-butene;(E)-1,4-Dibromobut-2;1,4-DIBROMO-2-PENTENE;4-dibromo-(e)-2-buten; 1,4-dibromo-, trans-;1,4-Dibromo-2-butene, E;4-dibromo-trans-2-buten
- CBNumber:
- CB3312702
- Molecular Formula:
- C4H6Br2
- Molecular Weight:
- 213.9
- MDL Number:
- MFCD07783464
- MOL File:
- 821-06-7.mol
- MSDS File:
- SDS
| Melting point | 48-51 °C(lit.) |
|---|---|
| Boiling point | 205 °C(lit.) |
| Density | 1.9393 (estimate) |
| refractive index | 1.5361 (estimate) |
| Flash point | 113°C |
| storage temp. | 2-8°C |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| form | Crystals or Crystalline Powder |
| color | colorless to slightly brown |
| Water Solubility | slightly soluble |
| BRN | 1719696 |
| Stability | Light Sensitive |
| InChIKey | RMXLHIUHKIVPAB-OWOJBTEDSA-N |
| CAS DataBase Reference | 821-06-7(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| NIST Chemistry Reference | 2-Butene, 1,4-dibromo-, (E)-(821-06-7) |
| EPA Substance Registry System | 2-Butene, 1,4-dibromo-, (2E)- (821-06-7) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS05,GHS06 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H301-H314 | |||||||||
| Precautionary statements | P260-P270-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338 | |||||||||
| Hazard Codes | T,C | |||||||||
| Risk Statements | 25-34-23/25 | |||||||||
| Safety Statements | 26-36/37/39-45-28A | |||||||||
| RIDADR | UN 2923 8/PG 2 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | EM4725000 | |||||||||
| F | 8-19 | |||||||||
| Hazard Note | Toxic/Corrosive | |||||||||
| HazardClass | 6.1(b) | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29033990 | |||||||||
| NFPA 704 |
|
(E)-1,4-Dibromobut-2-ene price More Price(28)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | D39207 | trans-1,4-Dibromo-2-butene 99% | 821-06-7 | 25g | $97.9 | 2024-03-01 | Buy |
| Sigma-Aldrich | D39207 | trans-1,4-Dibromo-2-butene 99% | 821-06-7 | 100g | $125 | 2024-03-01 | Buy |
| TCI Chemical | D2944 | trans-1,4-Dibromo-2-butene | 821-06-7 | 25G | $75 | 2024-03-01 | Buy |
| TCI Chemical | D2944 | trans-1,4-Dibromo-2-butene | 821-06-7 | 250G | $563 | 2024-03-01 | Buy |
| TRC | D425545 | (2E)-1,4-Dibromo-2-butene | 821-06-7 | 250g | $410 | 2021-12-16 | Buy |
(E)-1,4-Dibromobut-2-ene Chemical Properties,Uses,Production
Chemical Properties
white to light yellow crystal powde
Uses
(2E)-1,4-Dibromo-2-butene, is used as a reagent in the preparation of diaminoalkenes though copper-mediated diamination reaction.
Synthesis Reference(s)
The Journal of Organic Chemistry, 36, p. 3324, 1971 DOI: 10.1021/jo00821a012
General Description
Crystals or white crystalline solid.
Air & Water Reactions
(E)-1,4-Dibromobut-2-ene may be sensitive to exposure to light and air. Insoluble in water.
Reactivity Profile
(E)-1,4-Dibromobut-2-ene is incompatible with strong oxidizers and strong bases.
Fire Hazard
(E)-1,4-Dibromobut-2-ene is probably combustible.
Purification Methods
Crystallise the dibromide from ligroin and/or distil it in a vacuum. [Beilstein 1 IV 79.]
(E)-1,4-Dibromobut-2-ene Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Mujin Biotechnology Co.,Ltd | +86 13288715578 +8613288715578 | sales@hbmojin.com | China | 12809 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531151365 | mina@chuanghaibio.com | China | 18137 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20235 | 58 |
| Capot Chemical Co.,Ltd. | +86-（0）57185586718 +86-13336195806 | sales@capot.com | China | 29730 | 60 |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-371-+86-371-66670886 | info@dakenam.com | China | 19805 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21628 | 55 |
| Nanjing ChemLin Chemical Industry Co., Ltd. | 025-83697070 | product@chemlin.com.cn | CHINA | 3009 | 60 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29858 | 58 |
| Zhejiang ZETian Fine Chemicals Co. LTD | +8618957127338 | stella@zetchem.com | China | 2136 | 58 |
| Jinan Finer Chemical Co., Ltd | +86-531-88989536 +86-15508631887 | sales@finerchem.com | China | 2957 | 58 |
View Lastest Price from (E)-1,4-Dibromobut-2-ene manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-04-26 | (E)-1,4-Dibromobut-2-ene
821-06-7
|
US $5.00 / kg | 1kg | ≥99% | 100mt/year | Jinan Finer Chemical Co., Ltd | |
 |
2025-04-15 | (E)-1,4-Dibromobut-2-ene
821-06-7
|
US $0.00 / KG | 1KG | 99% | 500000kg | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-03-21 | (E)-1,4-Dibromobut-2-ene
821-06-7
|
US $0.00 / KG | 1KG | 99% | 50000KG/month | Hebei Mujin Biotechnology Co.,Ltd |
-
- (E)-1,4-Dibromobut-2-ene
821-06-7
- US $5.00 / kg
- ≥99%
- Jinan Finer Chemical Co., Ltd
-
- (E)-1,4-Dibromobut-2-ene
821-06-7
- US $0.00 / KG
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- (E)-1,4-Dibromobut-2-ene
821-06-7
- US $0.00 / KG
- 99%
- Hebei Mujin Biotechnology Co.,Ltd