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Oxalyl chloride

Also known as: Oxalyl dichloride, Ethanedioyl dichloride, Oxalic acid chloride, Oxalic acid dichloride, Oxalic chloride, Oxaloyl chloride, Oxalic dichloride, oxalicdichloride

Oxalyl chloride (CAS 79-37-8) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C2Cl2O2 and a molecular weight of 126.926 g/mol. Key properties include a melting point of −10-−8 °C(lit.), a boiling point of 63.5±9.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 4.5±19.3 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage, H332 — Harmful if inhaled and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
79-37-8
Jingsj CID
J-1327421-0
Molecular Formula
C2Cl2O2
Molecular Weight
126.926 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point−10-−8 °C(lit.)
Boiling Point63.5±9.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point4.5±19.3 °C
Exact Mass125.927536
PSA34.14000
LogP1.08
Additional Property4.4 (vs air)
Vapor Pressure170.7±0.1 mmHg at 25°C
Refractive Index1.449
Additional Propertyreacts

GHS Safety & Compliance

Corrosion / Irritant / Health HazardSignal word: Danger
  • H314 — Causes severe skin burns and eye damage
  • H332 — Harmful if inhaled
  • H335 — May cause respiratory irritation
  • H336 — May cause drowsiness or dizziness
  • H351 — Suspected of causing cancer
  • H373 — May cause damage to organs through prolonged exposure

Customs & Trade Information

HS Code2942000000

Frequently Asked Questions

What is the CAS number of Oxalyl chloride?

The CAS number of Oxalyl chloride is 79-37-8.

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

Oxalyl chloride has molecular formula C2Cl2O2 and molecular weight 126.926 g/mol.

Is Oxalyl chloride hazardous?

Oxalyl chloride has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage; H332 — Harmful if inhaled; H335 — May cause respiratory irritation.

What are the upstream and downstream products of Oxalyl chloride?

For Oxalyl chloride, Upstream Products: Oxalic acid, 2-Amino-4-fluorobenzoic acid, Diethyl oxalate; Downstream Products: 6-Methoxyindoline-2,3-dione, 4-Methoxyindoline-2,3-dione, 2-(5-Fluoro-1H-indol-3-yl)ethanol.

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

Last updated:

How to cite: Jingsj. "Oxalyl chloride (CAS 79-37-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1327421-0 (accessed 2026-11-07).

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