2-Methylbut-2-ene
Also known as: 2-Butene, 2-methyl-, 2-methylbut-2-ene, 3-Methyl-2-butene, Amylene (VAN), EINECS 208-156-3, Ethylene, trimethyl-, MFCD00009276, Trimethylethene, amylene, b-isoamylene, n-Amylene, β-Isoamylene
2-Methylbut-2-ene (CAS 513-35-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H10 and a molecular weight of 70.133 g/mol. Key properties include a melting point of -134 °C, a boiling point of 36.0±3.0 °C at 760 mmHg, a density of 0.7±0.1 g/cm3 and a flash point of -45.6±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 H304. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 513-35-9
- Jingsj CID
- J-21223-0
- Molecular Formula
- C5H10
- Molecular Weight
- 70.133 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -134 °C |
|---|---|
| Boiling Point | 36.0±3.0 °C at 760 mmHg |
| Density | 0.7±0.1 g/cm3 |
| Flash Point | -45.6±0.0 °C |
| Exact Mass | 70.078247 |
| LogP | 2.91 |
| Additional Property | 2.4 (vs air) |
| Vapor Pressure | 511.2±0.0 mmHg at 25°C |
| Refractive Index | 1.396 |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H302 — Harmful if swallowed
- H304
- H315 — Causes skin irritation
- H336 — May cause drowsiness or dizziness
- H341 — Suspected of causing genetic defects
- H351 — Suspected of causing cancer
- H411 — Toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2901299090 |
|---|---|
| Summary | 2901299090 unsaturated acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Methylbut-2-ene?
The CAS number of 2-Methylbut-2-ene is 513-35-9.
What are the molecular formula and molecular weight of 2-Methylbut-2-ene?
2-Methylbut-2-ene has molecular formula C5H10 and molecular weight 70.133 g/mol.
Is 2-Methylbut-2-ene hazardous?
2-Methylbut-2-ene has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H304.
What are the upstream and downstream products of 2-Methylbut-2-ene?
For 2-Methylbut-2-ene, Upstream Products: isoprene, 3-Methyl-1-butyne, 2-Metbut-1-en-1yne; Downstream Products: 2,3-DIMETHYL-2-PENTENE, 2-Chloro-1H-indole-3-carboxylic acid, 2,2,3-Trimethyloxirane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Methylbut-2-ene (CAS 513-35-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21223-0 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.