4-methyl-1,3,2-dioxathiane 2-oxide

亚硫酸丁烯酯

Also known as: 1,3-Butylene sulphite, 1,3-butylene glycol sulfite, 1,3-butylene glycol sulfite(BS), 4-Methyl-1,3-dioxa-2-thia(IV)cyclohexan-2-one, 4-Methyltrimethylene sulfite, 4-methyl-2-oxo-1,3,2-dioxathiane, Butyl sulfite, NSC 60195, FDA 0477, cis-4-methyl-r-2-oxo-1,3,2-dioxathiane, trans-4-methyl-r-2-oxo-1,3,2-dioxathiane

4-methyl-1,3,2-dioxathiane 2-oxide (CAS 4426-51-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H8O3S and a molecular weight of 136.17000 g/mol. It is also known as 1,3-Butylene sulphite, 1,3-butylene glycol sulfite and 1,3-butylene glycol sulfite(BS). Key properties include a melting point of 5℃, a boiling point of 185ºC at 760 mmHg, a density of 1.36 g/cm3 and a flash point of 69.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4426-51-1
Jingsj CID: J-1072151-7
Molecular Formula: C₄H₈O₃S
Chinese Name: 亚硫酸丁烯酯
Molecular Weight: 136.17000 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	5℃
Boiling Point	185ºC at 760 mmHg
Density	1.36 g/cm3
Flash Point	69.3ºC

Frequently Asked Questions

What is the CAS number of 4-methyl-1,3,2-dioxathiane 2-oxide?

The CAS number of 4-methyl-1,3,2-dioxathiane 2-oxide is 4426-51-1.

What are the molecular formula and molecular weight of 4-methyl-1,3,2-dioxathiane 2-oxide?

4-methyl-1,3,2-dioxathiane 2-oxide has molecular formula C4H8O3S and molecular weight 136.17000 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-methyl-1,3,2-dioxathiane 2-oxide (CAS 4426-51-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1072151-7 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.