3-Bromo-2-methylpropene
- CAS No.
- 1458-98-6
- Chemical Name:
- 3-Bromo-2-methylpropene
- Synonyms
- 3-BROMO-2-METHYLPROP-1-ENE;3-Bromo-2-methyl-1-propene;METHALLYL BROMIDE;METHYLALLYL BROMIDE;2-(bromomethyl)prop-1-ene;2-methylallylbromide;3-Bromo-2-methyL;2-(bromomethyl)propene;3-BROMO-2-METHYLPROPENE;33-bromo-2-methylpropene
- CBNumber:
- CB0729406
- Molecular Formula:
- C4H7Br
- Molecular Weight:
- 135
- MDL Number:
- MFCD00134155
- MOL File:
- 1458-98-6.mol
- MSDS File:
- SDS
| Melting point | -115.07°C (estimate) |
|---|---|
| Boiling point | 94-95 °C (lit.) |
| Density | 1.339 g/mL at 25 °C (lit.) |
| refractive index |
n |
| Flash point | 44 °F |
| storage temp. | 2-8°C |
| solubility | Chloroform, Ethyl Acetate |
| form | Oil |
| color | Clear Colourless to Pale Yellow |
| Specific Gravity | 1.339 |
| Stability | Light Sensitive |
| InChI | InChI=1S/C4H7Br/c1-4(2)3-5/h1,3H2,2H3 |
| InChIKey | USEGQJLHQSTGHW-UHFFFAOYSA-N |
| SMILES | C=C(C)CBr |
| CAS DataBase Reference | 1458-98-6(CAS DataBase Reference) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |     GHS02,GHS05,GHS07,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225-H302+H332-H314-H411 | |||||||||
| Precautionary statements | P210-P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338 | |||||||||
| PPE | Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter | |||||||||
| Hazard Codes | F,C,N | |||||||||
| Risk Statements | 11-20/22-34-51/53 | |||||||||
| Safety Statements | 9-16-26-29-36/37/39-45-61 | |||||||||
| RIDADR | UN 2924 3/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| HazardClass | 3.1 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29033990 | |||||||||
| Storage Class | 3 - Flammable liquids | |||||||||
| Hazard Classifications | Acute Tox. 4 Inhalation Acute Tox. 4 Oral Aquatic Chronic 2 Eye Dam. 1 Flam. Liq. 2 Skin Corr. 1B |
|||||||||
| Limited Quantities | 1.0 L (0.3 gallon) (liquid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) | |||||||||
| NFPA 704 |
|
3-Bromo-2-methylpropene price More Price(53)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 345830 | 3-Bromo-2-methylpropene 97% | 1458-98-6 | 5ml | $111 | 2026-04-30 | Buy |
| Sigma-Aldrich | 345830 | 3-Bromo-2-methylpropene 97% | 1458-98-6 | 25ml | $313 | 2026-04-30 | Buy |
| TCI Chemical | B2467 | 3-Bromo-2-methyl-1-propene >95.0%(GC) | 1458-98-6 | 5g | $34 | 2026-04-30 | Buy |
| TRC | TRC-B685480-5G | 3-Bromo-2-methyl-1-propene | 1458-98-6 | 5g | $70 | 2026-06-03 | Buy |
| TRC | TRC-B685480-25G | 3-Bromo-2-methyl-1-propene | 1458-98-6 | 25g | $183 | 2026-06-03 | Buy |
3-Bromo-2-methylpropene Chemical Properties,Uses,Production
Preparation
mol of 4-bromotoluene was added to the reaction vessel, the temperature was raised to 65 °C, and 7 mol of 25% oxalic acid solution was added. After the addition was complete, 6 mol of methylallyl bromide was added. After the addition was complete, the mixture was refluxed for 80 min, and then distilled under reduced pressure at 15 kPa. The fraction at 55 °C was collected. The collected distillate was washed with 35% potassium bicarbonate solution, allowed to stand and separate into layers, and the oil layer was removed. The oil layer was washed with 20% potassium bromide solution, 80% triethylamine solution, and 90% propionitrile solution. The oil layer was then dehydrated with a solid phosphorus pentoxide dehydrating agent to obtain 562.55 g of the product 3-bromo-2-methylpropene, with a yield of 93%.
Chemical Properties
clear colorless to yellow liquid
Uses
3-Bromo-2-methylpropene is used as a general reagent for various organic reactions and primarily for amino acid synthesis and asymmetric amino acid synthesis.
Uses
3-Bromo-2-methylpropene may be used:
- in the synthesis of alkenyl imines
- in the synthesis of 2-methylpropenyl (“methallyl”) complex, Cp*Os(η3-allyl)Br2
- in a study of chiral phase transfer alkylation leading to (S)-α-alkylcysteines
General Description
Rotational isomerism in 3-bromo-2-methylpropene has been studied by IR spectroscopy.
3-Bromo-2-methylpropene Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shanghai Aoyeah Chemical Technology Co., Ltd. | 021-021-64367138 15900495324 | sales@aoyeahchem.com | China | 196 | 55 |
| ChangZhou SIDU chemical Co., Ltd. | 0519-81291281 18015082300 | siduchem@hotmail.com | China | 274 | 62 |
| CHANGZHOU MALONG CHEMICALS CO., LTD. | 18651958646 | info@malongchem.com | China | 185 | 58 |
| Shanghai Lingfu Pharmaceutical Research Co. LTD | +86(21)5895 0110 19945755304 | sales@chemany.com | China | 9981 | 58 |
| Taizhou Jiecheng Chemical Co., Ltd. | 15868606025 | 2598306141@qq.com | China | 100 | 55 |
| Shanghai Boyle Chemical Co., Ltd. | sales@boylechem.com | China | 2915 | 55 | |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| ChangShu Haitian Fine Chemicals Co.,Ltd | 13913622609 | 974295387@qq.com | China | 192 | 61 |
View Lastest Price from 3-Bromo-2-methylpropene manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-03-20 | 3-Bromo-2-methylpropene
1458-98-6
|
1KG | 99% | 20 mt | Hebei Chuanghai Biotechnology Co., Ltd | ||
 |
2021-08-12 | 3-Bromo-2-methylpropene
1458-98-6
|
$10.00-15.00 | 1KG | 99%+ HPLC | Zhuozhou Wenxi import and Export Co., Ltd | ||
 |
2021-07-13 | 3-Bromo-2-methylpropene
1458-98-6
|
$10.00-15.00 | 1KG | 99%+ HPLC | Zhuozhou Wenxi import and Export Co., Ltd |
-
- 3-Bromo-2-methylpropene
1458-98-6
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- 3-Bromo-2-methylpropene
1458-98-6
- $10.00-15.00
- 99%+ HPLC
- Zhuozhou Wenxi import and Export Co., Ltd
-
- 3-Bromo-2-methylpropene
1458-98-6
- $10.00-15.00
- 99%+ HPLC
- Zhuozhou Wenxi import and Export Co., Ltd
