3-Bromo-2-methylpropene
Also known as: Methallyl bromide, Methylallyl bromide, 2-Methylallyl Bromide, 2-Methyl-2-propenyl Bromide, 3-Bromo-2-methyl-1-propene, 3-bromo-2-methylprop-1-ene, 1-Bromo-2-methyl-2-propene, 2-(Bromomethyl)propene
3-Bromo-2-methylpropene (CAS 1458-98-6) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H7Br and a molecular weight of 135.002 g/mol. Key properties include a boiling point of 96.3±9.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 6.7±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H302 — Harmful if swallowed and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1458-98-6
- Jingsj CID
- J-5294-8
- Molecular Formula
- C4H7Br
- Molecular Weight
- 135.002 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 96.3±9.0 °C at 760 mmHg |
|---|---|
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 6.7±0.0 °C |
| Exact Mass | 133.973099 |
| LogP | 2.34 |
| Vapor Pressure | 50.1±0.2 mmHg at 25°C |
| Refractive Index | 1.456 |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H302 — Harmful if swallowed
- H332 — Harmful if inhaled
- H314 — Causes severe skin burns and eye damage
- H411 — Toxic to aquatic life with long lasting effects
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 3-Bromo-2-methylpropene?
The CAS number of 3-Bromo-2-methylpropene is 1458-98-6.
What are the molecular formula and molecular weight of 3-Bromo-2-methylpropene?
3-Bromo-2-methylpropene has molecular formula C4H7Br and molecular weight 135.002 g/mol.
Is 3-Bromo-2-methylpropene hazardous?
3-Bromo-2-methylpropene has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H332 — Harmful if inhaled.
What are the upstream and downstream products of 3-Bromo-2-methylpropene?
For 3-Bromo-2-methylpropene, Upstream Products: 3-Chloro-2-methyl-1-propene, 2-Buten-1-ol, Isobutylene; Downstream Products: Ethyl 4-methyl-4-pentenoate, 4-(3-Bromophenyl)-2-methylbut-1-ene, 4,6-Dimethyl-2-heptanone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Bromo-2-methylpropene (CAS 1458-98-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5294-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.