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Topic summary

Oxalyl chloride

Oxalyl chloride
Names Preferred IUPAC name
Oxalyl dichloride
Systematic IUPAC name
Ethanedioyl dichloride
Other names
  • Oxalic acid chloride
  • Oxalic acid dichloride (1:2)
  • Oxalic dichloride
  • Oxaloyl chloride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard100.001.092EC Number
  • 201-200-2
RTECS number
  • KI2950000
UNII
  • InChI=1S/C2Cl2O2/c3-1(5)2(4)6
    Key: CTSLXHKWHWQRSH-UHFFFAOYSA-N
  • InChI=1/C2Cl2O2/c3-1(5)2(4)6
    Key: CTSLXHKWHWQRSH-UHFFFAOYAG
  • ClC(=O)C(=O)Cl
Properties C2O2Cl2Molar mass126.92 g·mol Appearance Colorless liquid OdorPhosgene-like Density1.4785 g/mL Melting point−16 °C (3 °F; 257 K) Boiling point63 to 64 °C (145 to 147 °F; 336 to 337 K) at 1.017 bar Reacts 1.429 Hazards Occupational safety and health (OHS/OSH):
Main hazards
Toxic, corrosive, lachrymatorGHS labelling: DangerH314, H331P261, P280, P305+P351+P338, P310NFPA 704 (fire diamond)
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1
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Safety data sheet (SDS) External MSDSRelated compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Oxalyl chloride is an organic chemical compound with the formulaCl−C(=O)−C(=O)−Cl. This colorless, sharp-smelling liquid, the diacyl chloride of oxalic acid, is a useful reagent in organic synthesis.

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