Oxalyl chloride

C₂Cl₂O₂CAS 79-37-8126.92 g/mol

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Properties

Molecular formula: C₂Cl₂O₂
Molar mass: 126.92 g/mol
Exact mass: 125.9275 Da
Density: 1.4785 g/mL (at 20 °C)
Melting point: −16 °C
Boiling point: 63.5 °C
logP: 0.52Crippen estimate
Polar surface area: 34.1 Å²
H-bond donors / acceptors: 0 / 2
Rotatable bonds: 1

Hazards

Danger

H260 In contact with water releases flammable gases which may ignite spontaneously60% of notifiers
H301 Toxic if swallowed24.3% of notifiers
H314 Causes severe skin burns and eye damage100% of notifiers
H318 Causes serious eye damage67.7% of notifiers
H331 Toxic if inhaled94.7% of notifiers
H335 May cause respiratory irritation52.3% of notifiers

Aggregated from 300 ECHA notifications, via PubChem; a share says how many notifiers assign that statement.

Precautionary statements

P223, P231+P232, P260, P261, P264, P264+P265, P270, P271, P280, P301+P316, P301+P330+P331, P302+P335+P334, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P321, P330, P363, P370+P378, P402+P404, P403+P233, P405, P501

Identifiers

CAS number

79-37-8

SMILES

O=C(Cl)C(=O)Cl

InChIKey

CTSLXHKWHWQRSH-UHFFFAOYSA-N

InChI

InChI=1S/C2Cl2O2/c3-1(5)2(4)6

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Names and synonyms

9 names

Ethanedioyl dichloride
Oxalic acid dichloride
Oxaloyl chloride
Oxalyl dichloride
Oxalic dichloride
Ethanedioyl chloride
Oxalic acid chloride
Oxaloyl dichloride
Dichlorooxalic acid

Safety data sheets

One stored sheet lists this compound in section 3, matched by the CAS number 79-37-8. Each row opens the sheet with its composition and PDF.

Oxalyl chloride > 95 %Fisher Scientific Company · 2025-12-18

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Work with Oxalyl chloride

Predict the NMR spectrum1H and 13C shifts with multiplicities Make a solutionWhat to weigh for any molarity and volume Check drug-likenessLipinski, Veber and lead-likeness Boiling point under vacuumAt any pressure, from its normal boiling point Isotope patternExact mass and the mass spectrum pattern

Similar compounds

Methacryloyl chloride920-46-744 % similar Methyl oxalyl chloride5781-53-342 % similar Phosgene75-44-538 % similar Itaconyl chloride1931-60-836 % similar Ethyl oxalyl chloride4755-77-536 % similar Chloranil118-75-233 % similar Malonyl chloride1663-67-831 % similar O-Chloranil2435-53-231 % similar

Tanimoto similarity of circular fingerprints over the whole catalogue.

All similar compounds

Elsewhere

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