Chemical Properties of Cyanogen (CAS 460-19-5)

InChI

InChI=1S/C2N2/c3-1-2-4

InChI Key

JMANVNJQNLATNU-UHFFFAOYSA-N

Formula

C2N2

SMILES

N#CC#N

Molecular Weight¹

52.03

CAS

460-19-5

Other Names

• (CN)2
• CARBON NITRILE
• Carbon nitride
• Carbon nitride (C2N2)
• Cyanogen (C2N2)
• Cyanogen gas
• Cyanogene
• Dicyan
• Dicyanogen
• ETHANEDINITRILE
• NCCN
• Nitriloacetonitrile
• OXALONITRILE
• Oxalic acid dinitrile
• Oxalic nitrile
• Oxalyl cyanide
• Prussite
• Rcra waste number P031
• UN 1026

• ω : Acentric Factor.
• PAff : Proton affinity (kJ/mol).
• BasG : Gas basicity (kJ/mol).
• Δ_cH°_gas : Standard gas enthalpy of combustion (kJ/mol).
• C_p,gas : Ideal gas heat capacity (J/mol×K).
• C_p,liquid : Liquid phase heat capacity (J/mol×K).
• μ : Dipole Moment (debye).
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fusH° : Enthalpy of fusion at standard conditions (kJ/mol).
• Δ_fusH : Enthalpy of fusion at a given temperature (kJ/mol).
• Δ_subH : Enthalpy of sublimation at a given temperature (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• Δ_vapH : Enthalpy of vaporization at a given temperature (kJ/mol).
• IE : Ionization energy (eV).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• P_c : Critical Pressure (kPa).
• P_triple : Triple Point Pressure (kPa).
• P_vap : Vapor pressure (kPa).
• ρ_l : Liquid Density (kg/m³).
• I_np : Non-polar retention indices.
• Δ_fusS : Entropy of fusion at a given temperature (J/mol×K).
• S°_liquid : Liquid phase molar entropy at standard conditions (J/mol×K).
• γ : Surface Tension (N/m).
• Δ_vapS : Entropy of vaporization at a given temperature (J/mol×K).
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• T_triple : Triple Point Temperature (K).
• V_c : Critical Volume (m³/kmol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ω	0.2780		KDB
PAff	674.70	kJ/mol	NIST
BasG	[621.70; 645.80]	kJ/mol
BasG	645.80	kJ/mol	NIST
BasG	622.80	kJ/mol	NIST
BasG	621.70	kJ/mol	NIST
BasG	642.00	kJ/mol	NIST
ΔcH°gas	[-1096.00; -1051.90]	kJ/mol
ΔcH°gas	-1096.00 ± 1.80	kJ/mol	NIST
ΔcH°gas	-1051.90 ± 5.00	kJ/mol	NIST
ΔcH°gas	-1093.70 ± 0.84	kJ/mol	NIST
μ	0.20	debye	KDB
ΔfG°	297.40	kJ/mol	KDB
ΔfH°gas	[263.00; 309.20]	kJ/mol
ΔfH°gas	309.20	kJ/mol	KDB
ΔfH°gas	308.90 ± 1.80	kJ/mol	NIST
ΔfH°gas	263.00	kJ/mol	NIST
ΔfH°gas	306.70 ± 0.84	kJ/mol	NIST
ΔfusH°	3.95	kJ/mol	Joback Calculated Property
ΔvapH°	20.80	kJ/mol	NIST
IE	[13.36; 13.51]	eV
IE	13.37 ± 0.01	eV	NIST
IE	13.50 ± 0.30	eV	NIST
IE	13.36 ± 0.01	eV	NIST
IE	13.37 ± 0.01	eV	NIST
IE	13.50	eV	NIST
IE	13.51	eV	NIST
log10WS	-0.39		Crippen Calculated Property
logPoct/wat	0.034		Crippen Calculated Property
McVol	41.800	ml/mol	McGowan Calculated Property
Pc	5980.00	kPa	KDB
Ptriple	75.10 ± 1.33	kPa	NIST
Inp	[259.20; 273.00]
Inp	259.20		NIST
Inp	273.00		NIST
Inp	259.20		NIST
S°liquid	138.83	J/mol×K	NIST
Tboil	[252.00; 252.00]	K
Tboil	252.00	K	KDB
Tboil	252.00	K	NIST
Tboil	252.00	K	NIST
Tc	400.00	K	KDB
Tfus	245.20	K	KDB
Ttriple	245.32 ± 0.02	K	NIST
Vc	0.200	m3/kmol	Joback Calculated Property

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[58.91; 67.25]	J/mol×K	[449.32; 670.74]
Cp,gas	58.91	J/mol×K	449.32	Joback Calculated Property
Cp,gas	60.46	J/mol×K	486.22	Joback Calculated Property
Cp,gas	61.94	J/mol×K	523.13	Joback Calculated Property
Cp,gas	63.36	J/mol×K	560.03	Joback Calculated Property
Cp,gas	64.72	J/mol×K	596.93	Joback Calculated Property
Cp,gas	66.02	J/mol×K	633.84	Joback Calculated Property
Cp,gas	67.25	J/mol×K	670.74	Joback Calculated Property
Cp,liquid	105.73	J/mol×K	255.00	NIST
ΔfusH	[8.11; 8.11]	kJ/mol	[245.30; 245.32]
ΔfusH	8.11	kJ/mol	245.30	NIST
ΔfusH	8.11	kJ/mol	245.32	NIST
ΔsubH	[32.40; 34.40]	kJ/mol	[203.50; 223.50]
ΔsubH	33.60	kJ/mol	203.50	NIST
ΔsubH	32.40	kJ/mol	219.00	NIST
ΔsubH	33.00	kJ/mol	220.50	NIST
ΔsubH	34.40	kJ/mol	223.50	NIST
ΔvapH	[23.30; 24.50]	kJ/mol	[246.50; 259.50]
ΔvapH	24.50	kJ/mol	246.50	NIST
ΔvapH	23.30 ± 0.20	kJ/mol	251.95	NIST
ΔvapH	23.33	kJ/mol	252.00	NIST
ΔvapH	23.33	kJ/mol	252.00	NIST
ΔvapH	23.90	kJ/mol	259.50	NIST
ΔvapH	23.50	kJ/mol	259.50	NIST
ρl	954.00	kg/m3	252.00	KDB
ΔfusS	33.05	J/mol×K	245.32	NIST
γ	0.02	N/m	217.00	KDB
ΔvapS	92.58	J/mol×K	252.00	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 5979.48]	kPa	[191.32; 400.15]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.39745e+01
Coefficient B			-1.79426e+03
Coefficient C			-6.02280e+01
Temperature range, min.			191.32
Temperature range, max.			400.15
Pvap	1.33	kPa	191.32	Calculated Property
Pvap	10.44	kPa	214.52	Calculated Property
Pvap	47.75	kPa	237.73	Calculated Property
Pvap	153.64	kPa	260.93	Calculated Property
Pvap	388.02	kPa	284.13	Calculated Property
Pvap	823.46	kPa	307.34	Calculated Property
Pvap	1535.79	kPa	330.54	Calculated Property
Pvap	2595.50	kPa	353.74	Calculated Property
Pvap	4061.80	kPa	376.95	Calculated Property
Pvap	5979.48	kPa	400.15	Calculated Property

Similar Compounds

Find more compounds similar to Cyanogen.

Sources

• Crippen Method
• Crippen Method
• Joback Method
• KDB
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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