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Cyanogen

Names Preferred IUPAC nameOxalonitrileSystematic IUPAC nameEthanedinitrileOther names CyanogenBis(nitridocarbon)(C—C)DicyanCarbon nitrideOxalic acid dinitrileDicyanogenNitriloacetonitrileCYIdentifiers CAS Number460-19-53D model (JSmol)Interactive imageBeilstein Reference1732464 ChEBICHEBI:29308ChemSpider9605ECHA InfoCard100.006.643EC Number207-306-5Gmelin Reference1090 MeSHcyanogenPubChemCID9999RTECS numberGT1925000UNII534Q0F66RKUN number1026 CompTox Dashboard(EPA)DTXSID1023992InChIInChI=1S/C2N2/c3-1-2-4Key: JMANVNJQNLATNU-UHFFFAOYSA-NSMILESN#CC#NProperties Chemical formulaC2N2Molar mass52.036 g·mol Appearance Colourless gas Odorpungent, bitter almond-like Density950 mg/mL (at −21 °C) Melting point−28 °C (−18 °F; 245 K) Boiling point−21.1 °C; −6.1 °F; 252.0 K Solubility in water45 g/100 mL (at 20 °C) Solubilitysoluble in ethanol, ethyl etherVapor pressure5.1 atm (21 °C) Henry's lawconstant (kH)1.9 μmol/(Pa·kg) Magnetic susceptibility (χ)−21.6·10 cm/mol Refractive index (nD)1.327 (18 °C) Thermochemistry Std molarentropy(S298)241.57 J/(K·mol) Std enthalpy offormation(ΔfH298)309.07 kJ/mol Std enthalpy ofcombustion(ΔcH298)−1.0978–−1.0942 MJ/mol Hazards Occupational safety and health (OHS/OSH): Main hazardsforms cyanide in the body; flammable GHS labelling: PictogramsSignal wordDangerHazard statementsH220, H331, H410Precautionary statementsP210, P261, P271, P273, P304+P340, P311, P321, P377, P381, P391, P403, P403+P233, P405, P501NFPA 704 (fire diamond) 442Explosive limits6.6–32% NIOSH (US health exposure limits): PEL (Permissible)none REL (Recommended)TWA 10 ppm (20 mg/m) IDLH (Immediate danger)N.D. Safety data sheet (SDS) inchem.orgRelated compounds Related alkanenitrilesHydrogen cyanideThiocyanic acidCyanogen iodideCyanogen bromideCyanogen chlorideCyanogen fluorideCyanogen azideAcetonitrileAminoacetonitrileGlycolonitrilePropionitrileAminopropionitrileMalononitrilePivalonitrileAcetone cyanohydrinRelated compoundsDBNPAExcept where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).Yverify ( ?)

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