sec-Butyl disulfide

Also known as: Di-sec-butyl disulfide, bis(1-methylpropyl) disulfide, 3,6-dimethyl-4,5-dithiaoctane, 2-(sec-butyldisulfanyl)butane, dibutan-2-yl disulfide, sec-butyldisulfide, sec-butyl disulphide, Bis(2-butyl) disulfide, Di-sec-butyl disulfane

sec-Butyl disulfide (CAS 5943-30-6) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C8H18S2 and a molecular weight of 178.35900 g/mol. Key properties include a melting point of -36.74°C (estimate), a boiling point of 220.6ºC at 760 mmHg, a density of 0.957 and a flash point of 113ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5943-30-6
Jingsj CID: J-1520461-9
Molecular Formula: C₈H₁₈S₂
Molecular Weight: 178.35900 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-36.74°C (estimate)
Boiling Point	220.6ºC at 760 mmHg
Density	0.957
Flash Point	113ºC
Exact Mass	178.08500
PSA	50.60000
LogP	3.96480
Refractive Index	1.492

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of sec-Butyl disulfide?

The CAS number of sec-Butyl disulfide is 5943-30-6.

What are the molecular formula and molecular weight of sec-Butyl disulfide?

sec-Butyl disulfide has molecular formula C8H18S2 and molecular weight 178.35900 g/mol.

Is sec-Butyl disulfide hazardous?

sec-Butyl disulfide has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of sec-Butyl disulfide?

For sec-Butyl disulfide, Upstream Products: 2-Butanethiol, 2-Bromobutane, 2-Chlorobutane; Downstream Products: 2-Butanethiol.

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. "sec-Butyl disulfide (CAS 5943-30-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1520461-9 (accessed 2026-11-07).

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