1-Bromo-2-methylpropane
Also known as: Isobutyl bromide, 2-Methylpropyl bromide, 1-Bromo-2-methyl propane, bromoisobutane, i-Butyl bromide, Isobutylbromid
1-Bromo-2-methylpropane (CAS 78-77-3) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H9Br and a molecular weight of 137.018 g/mol. Key properties include a melting point of -119 °C, a boiling point of 90.7±8.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 18.3±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly 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.
- 78-77-3
- Jingsj CID
- J-47588-2
- Molecular Formula
- C4H9Br
- Molecular Weight
- 137.018 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -119 °C |
|---|---|
| Boiling Point | 90.7±8.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 18.3±0.0 °C |
| Exact Mass | 135.988754 |
| LogP | 2.56 |
| Vapor Pressure | 62.9±0.2 mmHg at 25°C |
| Refractive Index | 1.436 |
| Additional Property | 0.51 g/L (18 ºC) |
GHS Safety & Compliance
- H225 — Highly 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-methylpropane?
The CAS number of 1-Bromo-2-methylpropane is 78-77-3.
What are the molecular formula and molecular weight of 1-Bromo-2-methylpropane?
1-Bromo-2-methylpropane has molecular formula C4H9Br and molecular weight 137.018 g/mol.
Is 1-Bromo-2-methylpropane hazardous?
1-Bromo-2-methylpropane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1-Bromo-2-methylpropane?
For 1-Bromo-2-methylpropane, Upstream Products: 2-Methyl-1-propanol, Isobutane Residual Solvent Standard, Isobutylene; Downstream Products: 4-Isobutoxybenzoic acid, Isobutyl nitrite, 2-Methyl-1-nitropropane.
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-methylpropane (CAS 78-77-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47588-2 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.