2-Methyl-1-butanethiol

2-甲基-1-丁硫醇

Also known as: 2-Methylbutane-1-thiol, 2-Methylbutyl mercaptan, 1-Mercapto-2-methylbutane, FEMA 3303, 2-methylbutanethiol, 2-methyl-1-butanethio

2-Methyl-1-butanethiol (CAS 1878-18-8) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C5H12S and a molecular weight of 104.214 g/mol. It is also known as 2-Methylbutane-1-thiol, 2-Methylbutyl mercaptan and 1-Mercapto-2-methylbutane. Key properties include a boiling point of 114.8±8.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 19.4±0.0 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1878-18-8
Jingsj CID
J-10761-5
Molecular Formula
C5H12S
Chinese Name
2-甲基-1-丁硫醇
Molecular Weight
104.214 g/mol
Category
Alcohols
Last updated
8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point114.8±8.0 °C at 760 mmHg
Density0.8±0.1 g/cm3
Flash Point19.4±0.0 °C

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of 2-Methyl-1-butanethiol?

The CAS number of 2-Methyl-1-butanethiol is 1878-18-8.

What are the molecular formula and molecular weight of 2-Methyl-1-butanethiol?

2-Methyl-1-butanethiol has molecular formula C5H12S and molecular weight 104.214 g/mol.

Is 2-Methyl-1-butanethiol hazardous?

2-Methyl-1-butanethiol has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "2-Methyl-1-butanethiol (CAS 1878-18-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10761-5 (accessed 2026-10-24).

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