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3-Methyl-3-buten-1-ol

Also known as: Isoprenol, 3-Methylbut-3-en-1-ol, 2-Methyl-4-hydroxy-1-butene, Isopentenyl alcohol, 3-Buten-1-ol, 3-methyl-

3-Methyl-3-buten-1-ol (CAS 763-32-6) 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 boiling point of 114.2±9.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 36.1±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
763-32-6
Jingsj CID
J-922287-1
Molecular Formula
C5H10O
Molecular Weight
86.132 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point114.2±9.0 °C at 760 mmHg
Density0.8±0.1 g/cm3
Flash Point36.1±0.0 °C
Exact Mass86.073166
PSA20.23000
LogP1.11
Vapor Pressure10.2±0.4 mmHg at 25°C
Refractive Index1.422

GHS Safety & Compliance

Flammable / CorrosionSignal word: Danger
  • H226 — Flammable liquid and vapour
  • H318 — Causes serious eye damage

Customs & Trade Information

HS Code2905290000
Summary2905290000 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-3-buten-1-ol?

The CAS number of 3-Methyl-3-buten-1-ol is 763-32-6.

What are the molecular formula and molecular weight of 3-Methyl-3-buten-1-ol?

3-Methyl-3-buten-1-ol has molecular formula C5H10O and molecular weight 86.132 g/mol.

Is 3-Methyl-3-buten-1-ol hazardous?

3-Methyl-3-buten-1-ol has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H318 — Causes serious eye damage.

What are the upstream and downstream products of 3-Methyl-3-buten-1-ol?

For 3-Methyl-3-buten-1-ol, Upstream Products: Isobutylene, 3-Methyl-2-buten-1-ol, isoprene; Downstream Products: Mollugin, 3-Methoxy-3-methylbutan-1-ol, Ethyl 5-methylhex-5-enoate.

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-3-buten-1-ol (CAS 763-32-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-922287-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.