Thionyl chloride

Also known as: thionyl dichloride, sulfinyl chloride, sulfinyl dichloride, sulfur oxychloride, sulfurous oxychloride, sulfur dichloride oxide

Thionyl chloride (CAS 7719-09-7) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Cl2OS and a molecular weight of 118.970 g/mol. Key properties include a melting point of -105 °C, a boiling point of 79.0±9.0 °C at 760 mmHg, a density of 2.0±0.1 g/cm3 and a flash point of 105°C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H314 — Causes severe skin burns and eye damage and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 7719-09-7
Jingsj CID: J-1330829-7
Molecular Formula: Cl₂OS
Molecular Weight: 118.970 g/mol
Category: Inorganic Chemicals
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-105 °C
Boiling Point	79.0±9.0 °C at 760 mmHg
Density	2.0±0.1 g/cm3
Flash Point	105°C
Exact Mass	117.904694
PSA	36.28000
LogP	0.68
Vapor Pressure	100.3±0.1 mmHg at 25°C
Refractive Index	1.593
Additional Property	REACTS

GHS Safety & Compliance

Corrosion / Acute ToxicitySignal word: Danger

H302 — Harmful if swallowed
H314 — Causes severe skin burns and eye damage
H331 — Toxic if inhaled

Customs & Trade Information

HS Code	2812101000

Frequently Asked Questions

What is the CAS number of Thionyl chloride?

The CAS number of Thionyl chloride is 7719-09-7.

What are the molecular formula and molecular weight of Thionyl chloride?

Thionyl chloride has molecular formula Cl2OS and molecular weight 118.970 g/mol.

Is Thionyl chloride hazardous?

Thionyl chloride has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H314 — Causes severe skin burns and eye damage; H331 — Toxic if inhaled.

What are the upstream and downstream products of Thionyl chloride?

For Thionyl chloride, Upstream Products: Carbon tetrachloride, dichloridooxygen, Sulfur dichloride; Downstream Products: cis-1,2-dichlorocyclohexane, trans-1,2-dichlorocyclohexane, Ethyl 6-chloro-6-oxohexanoate.

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. "Thionyl chloride (CAS 7719-09-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1330829-7 (accessed 2026-11-09).

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