3-Methyl-2-buten-1-ol
Also known as: Prenol, Prenyl alcohol, gamma,gamma-Dimethylallyl alcohol, 3-Methylbut-2-en-1-ol, 3,3-Dimethylallyl alcohol, 2-Buten-1-ol, 3-methyl-, 3-Methyl-2-butenyl alcohol, gamma-Methylcrotyl alcohol
3-Methyl-2-buten-1-ol (CAS 556-82-1) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C5H10O and a molecular weight of 86.132 g/mol. Key properties include a melting point of -86ºC, a boiling point of 140 ºC, a density of 0.848 and a flash point of 43 ºC. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H302 — Harmful if swallowed and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 556-82-1
- Jingsj CID
- J-48053-5
- Molecular Formula
- C5H10O
- Molecular Weight
- 86.132 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -86ºC |
|---|---|
| Boiling Point | 140 ºC |
| Density | 0.848 |
| Flash Point | 43 ºC |
| Exact Mass | 86.073166 |
| PSA | 20.23000 |
| LogP | 1.24 |
| Vapor Pressure | 2.4±0.6 mmHg at 25°C |
| Refractive Index | 1.442-1.444 |
| Storage Conditions | Flammables area |
| Additional Property | 170 g/L (20 ºC) |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2905290000 |
|---|---|
| Summary | 2905290000 unsaturated monohydric alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 3-Methyl-2-buten-1-ol?
The CAS number of 3-Methyl-2-buten-1-ol is 556-82-1.
What are the molecular formula and molecular weight of 3-Methyl-2-buten-1-ol?
3-Methyl-2-buten-1-ol has molecular formula C5H10O and molecular weight 86.132 g/mol.
Is 3-Methyl-2-buten-1-ol hazardous?
3-Methyl-2-buten-1-ol has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H302 — Harmful if swallowed; H315 — Causes skin irritation.
What are the upstream and downstream products of 3-Methyl-2-buten-1-ol?
For 3-Methyl-2-buten-1-ol, Upstream Products: 3-Methyl-2-butenal, Ethyl 3-methyl-2-butenoate, 3-Methyl-2-butenoic acid; Downstream Products: 1-Chloro-3-methyl-2-butene, 3-Methyl-2-butenal, 3-Chloro-3-methyl-1-butene.
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-Methyl-2-buten-1-ol (CAS 556-82-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48053-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.