2-(Chloromethyl)-2-methyloxirane

Also known as: Methylepichlorohydrin, 2-Methylepichlorohydrin, 1-Chloro-2,3-epoxy-2-methylpropane, 1,2-Epoxy-2-methyl-3-chloropropane, 1,2-Epoxy-3-chloroisobutane, 2-Methyl-1-chloro-2,3-epoxypropane, 2-Methyl-2-(chloromethyl)oxirane, 3-Chloro-1,2-epoxy-2-methylpropane, Methepichlorohydrin, NSC 24245, β-Methylepichlorohydrin, 2-(Chloromethyl)-1,2-epoxypropane, 2-(Chloromethyl)-1,2-propylene Oxide, 2-Methyl-3-chloro-1,2-epoxypropane, 2-methyl-2-chloromethyloxirane, 3-Chloro-2-methyl-1,2-propenoxide, 3-chloro-2-methyl-1,2-epoxypropane, BETA-METHYL EPICHLOROHYDRIN, EINECS 209-916-7, MFCD00052487

2-(Chloromethyl)-2-methyloxirane (CAS 598-09-4) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C4H7ClO and a molecular weight of 106.551 g/mol. Key properties include a melting point of -40ºC, a boiling point of 122.0±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 34.5±4.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 598-09-4
Jingsj CID: J-19463-3
Molecular Formula: C₄H₇ClO
Molecular Weight: 106.551 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-40ºC
Boiling Point	122.0±0.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	34.5±4.5 °C
Exact Mass	106.018539
PSA	12.53000
LogP	0.13
Vapor Pressure	17.1±0.2 mmHg at 25°C
Refractive Index	1.438

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 2-(Chloromethyl)-2-methyloxirane?

The CAS number of 2-(Chloromethyl)-2-methyloxirane is 598-09-4.

What are the molecular formula and molecular weight of 2-(Chloromethyl)-2-methyloxirane?

2-(Chloromethyl)-2-methyloxirane has molecular formula C4H7ClO and molecular weight 106.551 g/mol.

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. "2-(Chloromethyl)-2-methyloxirane (CAS 598-09-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19463-3 (accessed 2026-11-06).

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