(S)-(-)-1,2-Epoxybutane

Also known as: (S)-(-)-Butylene Oxide, (S)-(-)-Ethyloxirane, (2S)-2-Ethyloxirane, (S)-1,2-Butylene oxide, (S)-1-Butene oxide, (2S)-Ethyloxirane, Oxirane, 2-ethyl-, (2S)-, (S)-(-)-Ethylethylene Oxide

(S)-(-)-1,2-Epoxybutane (CAS 30608-62-9) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C4H8O and a molecular weight of 72.106 g/mol. Key properties include a boiling point of 63.4±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of -12.2±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 H312 — Harmful in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 30608-62-9
Jingsj CID: J-1315674-6
Molecular Formula: C₄H₈O
Molecular Weight: 72.106 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	63.4±0.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	-12.2±0.0 °C
Exact Mass	72.057518
PSA	12.53000
LogP	0.66
Vapor Pressure	183.8±0.1 mmHg at 25°C
Refractive Index	1.407

GHS Safety & Compliance

Flammable / Corrosion / Irritant / Health HazardSignal word: Danger

H225 — Highly flammable liquid and vapour
H302 — Harmful if swallowed
H312 — Harmful in contact with skin
H314 — Causes severe skin burns and eye damage
H332 — Harmful if inhaled
H351 — Suspected of causing cancer

Customs & Trade Information

HS Code	2910900090
Summary	2910900090. epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring, and their halogenated, sulphonated, nitrated or nitrosated derivatives. 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 (S)-(-)-1,2-Epoxybutane?

The CAS number of (S)-(-)-1,2-Epoxybutane is 30608-62-9.

What are the molecular formula and molecular weight of (S)-(-)-1,2-Epoxybutane?

(S)-(-)-1,2-Epoxybutane has molecular formula C4H8O and molecular weight 72.106 g/mol.

Is (S)-(-)-1,2-Epoxybutane hazardous?

(S)-(-)-1,2-Epoxybutane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H312 — Harmful in contact with skin.

What are the upstream and downstream products of (S)-(-)-1,2-Epoxybutane?

For (S)-(-)-1,2-Epoxybutane, Upstream Products: 1,2-epoxybutane, Sodium cyanate, (R)-1,2-Butanediol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "(S)-(-)-1,2-Epoxybutane (CAS 30608-62-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1315674-6 (accessed 2026-11-09).

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