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1-Methoxybutane

Also known as: Butyl Methyl Ether, n-Butyl Methyl Ether, Methyl n-butyl ether, Butane, 1-methoxy-, EINECS 211-033-7, MFCD00009453

1-Methoxybutane (CAS 628-28-4) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C5H12O and a molecular weight of 88.148 g/mol. Key properties include a melting point of −115 °C(lit.), a boiling point of 70.9±3.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of -10.0±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
628-28-4
Jingsj CID
J-4675-2
Molecular Formula
C5H12O
Molecular Weight
88.148 g/mol
Category
Ethers
Last updated
8/21/2026

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Physicochemical Properties

Melting Point−115 °C(lit.)
Boiling Point70.9±3.0 °C at 760 mmHg
Density0.8±0.1 g/cm3
Flash Point-10.0±0.0 °C
Exact Mass88.088814
PSA9.23000
LogP1.51
Vapor Pressure137.5±0.1 mmHg at 25°C
Refractive Index1.376

GHS Safety & Compliance

FlammableSignal word: Danger
  • H225 — Highly flammable liquid and vapour

Customs & Trade Information

HS Code2909199090
Summary2909199090. other acyclic ethers 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 1-Methoxybutane?

The CAS number of 1-Methoxybutane is 628-28-4.

What are the molecular formula and molecular weight of 1-Methoxybutane?

1-Methoxybutane has molecular formula C5H12O and molecular weight 88.148 g/mol.

Is 1-Methoxybutane hazardous?

1-Methoxybutane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour.

What are the upstream and downstream products of 1-Methoxybutane?

For 1-Methoxybutane, Upstream Products: Methanol, 1-Butanol, Diazomethane; Downstream Products: Butyl chloroacetate, 1-Iodobutane, iodomethane.

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-Methoxybutane (CAS 628-28-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4675-2 (accessed 2026-11-06).

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