di-sec-butyl sulfide

Also known as: sec-Butyl sulfide, 2-(sec-Butylthio)butane, 3,5-Dimethyl-4-thiaheptane, Di-sec-Butyl thioether, bis(1-methylpropyl) sulfide, di-sec-butyl sulphide, sec-Butyl sulphide, Butane,2,2'-thiobis, 2-butan-2-ylsulfanylbutane, EINECS 210-938-4, MFCD00009332

di-sec-butyl sulfide (CAS 626-26-6) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C8H18S and a molecular weight of 146.29400 g/mol. Key properties include a melting point of -62.18°C (estimate), a boiling point of 165ºC(lit.), a density of 0.839 g/mL at 25ºC(lit.) and a flash point of 39.4 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.: 626-26-6
Jingsj CID: J-6506-7
Molecular Formula: C₈H₁₈S
Molecular Weight: 146.29400 g/mol
Category: Ethers
Last updated: 11/2/2026

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Physicochemical Properties

Melting Point	-62.18°C (estimate)
Boiling Point	165ºC(lit.)
Density	0.839 g/mL at 25ºC(lit.)
Flash Point	39.4 °C
Exact Mass	146.11300
PSA	25.30000
LogP	3.31660
Refractive Index	n20/D 1.45(lit.)

GHS Safety & Compliance

Flammable / IrritantSignal word: Warning

H226 — Flammable liquid and vapour
H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of di-sec-butyl sulfide?

The CAS number of di-sec-butyl sulfide is 626-26-6.

What are the molecular formula and molecular weight of di-sec-butyl sulfide?

di-sec-butyl sulfide has molecular formula C8H18S and molecular weight 146.29400 g/mol.

Is di-sec-butyl sulfide hazardous?

di-sec-butyl sulfide has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of di-sec-butyl sulfide?

For di-sec-butyl sulfide, Upstream Products: butadiene, 2-Butanethiol, sec-Butyllithium; Downstream Products: Methyl p-tolyl sulfide, 4-Chlorothioanisole, p-Toluenesulfonamide.

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

Last updated: 11/2/2026

How to cite: Jingsj. "di-sec-butyl sulfide (CAS 626-26-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6506-7 (accessed 2026-11-07).

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