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3-Methylbenzenethiol

Also known as: m-Toluenethiol, 3-Methylthiophenol, m-Thiocresol, 3-Mercaptotoluene, m-Tolyl mercaptan, 3-Methylphenyl mercaptan, m-Methylbenzenethiol, m-Mercaptotoluene, 3-Methylbenzenethiolate, NSC 81219

3-Methylbenzenethiol (CAS 108-40-7) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C7H8S and a molecular weight of 124.203 g/mol. Key properties include a melting point of <-20ºC, a boiling point of 195.0±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 68.3±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H315 — Causes skin irritation, H318 — Causes serious eye damage and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
108-40-7
Jingsj CID
J-1993050-8
Molecular Formula
C7H8S
Molecular Weight
124.203 g/mol
Category
Alcohols
Last updated
11/3/2026

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Physicochemical Properties

Melting Point<-20ºC
Boiling Point195.0±0.0 °C at 760 mmHg
Density1.0±0.1 g/cm3
Flash Point68.3±0.0 °C
Exact Mass124.034668
PSA38.80000
LogP2.98
Vapor Pressure0.6±0.3 mmHg at 25°C
Refractive Index1.578

GHS Safety & Compliance

Corrosion / Irritant / Environmental HazardSignal word: Danger
  • H315 — Causes skin irritation
  • H318 — Causes serious eye damage
  • H335 — May cause respiratory irritation
  • H400 — Very toxic to aquatic life

Customs & Trade Information

HS Code2930909090
Summary2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3-Methylbenzenethiol?

The CAS number of 3-Methylbenzenethiol is 108-40-7.

What are the molecular formula and molecular weight of 3-Methylbenzenethiol?

3-Methylbenzenethiol has molecular formula C7H8S and molecular weight 124.203 g/mol.

Is 3-Methylbenzenethiol hazardous?

3-Methylbenzenethiol has GHS signal word Danger and hazard statements H315 — Causes skin irritation; H318 — Causes serious eye damage; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 3-Methylbenzenethiol?

For 3-Methylbenzenethiol, Upstream Products: 3-Bromotoluene, 3-Iodotoluene, n-Butyllithium; Downstream Products: 3-Methylthioanisole, m-Toluenesulfonyl chloride, Ethyl 3-methylbenzoate.

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

Last updated:

How to cite: Jingsj. "3-Methylbenzenethiol (CAS 108-40-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993050-8 (accessed 2026-11-09).

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