Ethylene (CAS 74-85-1)

InChI

InChI=1S/C2H4/c1-2/h1-2H2

InChI Key

VGGSQFUCUMXWEO-UHFFFAOYSA-N

Formula

C2H4

SMILES

C=C

Molecular Weight¹

28.05

CAS

74-85-1

Other Names

Acetene
Athylen
Bicarburretted hydrogen
C2H4
Elayl
Liquid ethyene
Olefiant gas
UN 1038
UN 1962
ethene

ω : Acentric Factor.
PAff : Proton affinity (kJ/mol).
T_ig : Autoignition Temperature (K).
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).
η : Dynamic viscosity (Pa×s).
LFL : Lower Flammability Limit (% in Air).
UFL : Upper Flammability Limit (% in Air).
T_flash,oc : Flash Point (Open Cup Method) (K).
Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
R_g : Radius of Gyration.
Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
Δ_fH°_{(+) ion} : Enthalpy of formation of positive ion at standard conditions (kJ/mol).
Δ_fH_{(+) ion,0K} : Enthalpy of formation of positive ion at 0K (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 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).
NFPA Fire : NFPA Fire Rating.
NFPA Health : NFPA Health Rating.
NFPA Safety : NFPA Safety Rating.
P_c : Critical Pressure (kPa).
P_triple : Triple Point Pressure (kPa).
P_vap : Vapor pressure (kPa).
ρ_c : Critical density (kg/m³).
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).
λ : Gas thermal conductivity (W/m×K).
T_fus : Normal melting (fusion) point (K).
T_triple : Triple Point Temperature (K).
V_c : Critical Volume (m³/kmol).
Z_c : Critical Compressibility.
Z_ra : Rackett Parameter.
¹: Molecular weight from the IUPAC atomic weights tables.

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Physical Properties

Property	Value	Unit	Source
ω	0.0890		KDB
PAff	680.50	kJ/mol	NIST
T_ig	723.15	K	KDB
BasG	651.50	kJ/mol	NIST
Δ_cH°_gas	-1411.20 ± 0.30	kJ/mol	NIST
μ	0.00	debye	KDB
LFL	2.70	% in Air	KDB
UFL	28.60	% in Air	KDB
T_flash,oc	137.04	K	KDB
Δ_fG°	68.16	kJ/mol	KDB
R_g	1.5380		KDB
Δ_fH°_gas	[52.34; 52.40]	kJ/mol
Δ_fH°_gas	52.34	kJ/mol	KDB
Δ_fH°_gas	52.40 ± 0.50	kJ/mol	NIST
Δ_fH°_{(+) ion}	1067.00 ± 0.80	kJ/mol	NIST
Δ_fH_{(+) ion,0K}	1080.00	kJ/mol	NIST
Δ_fusH°	-1.83	kJ/mol	Joback Calculated Property
IE	[10.50; 10.80]	eV
IE	10.51 ± 0.00	eV	NIST
IE	10.51	eV	NIST
IE	10.51 ± 0.00	eV	NIST
IE	10.51 ± 0.01	eV	NIST
IE	10.51 ± 0.01	eV	NIST
IE	10.51	eV	NIST
IE	10.50 ± 0.02	eV	NIST
IE	10.51 ± 0.01	eV	NIST
IE	10.51	eV	NIST
IE	10.51 ± 0.02	eV	NIST
IE	10.50	eV	NIST
IE	10.52 ± 0.00	eV	NIST
IE	10.52 ± 0.00	eV	NIST
IE	10.51	eV	NIST
IE	10.50	eV	NIST
IE	10.51 ± 0.00	eV	NIST
IE	10.51 ± 0.01	eV	NIST
IE	10.52 ± 0.00	eV	NIST
IE	10.51	eV	NIST
IE	10.51	eV	NIST
IE	10.51	eV	NIST
IE	10.56	eV	NIST
IE	10.51 ± 0.02	eV	NIST
IE	10.51 ± 0.05	eV	NIST
IE	10.50 ± 0.05	eV	NIST
IE	10.51	eV	NIST
IE	10.51 ± 0.01	eV	NIST
IE	10.50 ± 0.01	eV	NIST
IE	10.51 ± 0.00	eV	NIST
IE	10.50 ± 0.02	eV	NIST
IE	10.52 ± 0.01	eV	NIST
IE	10.51 ± 0.03	eV	NIST
IE	Outlier 10.80 ± 0.05	eV	NIST
IE	Outlier 10.68	eV	NIST
IE	10.50 ± 0.01	eV	NIST
IE	10.50	eV	NIST
IE	10.50	eV	NIST
log₁₀WS	[-0.40; -0.40]
log₁₀WS	-0.40		Aq. Solubility Prediction
log₁₀WS	-0.40		Estimated Solubility
logP_oct/wat	0.802		Crippen Calculated Property
McVol	34.740	ml/mol	McGowan Calculated Property
NFPA Fire	4		KDB
NFPA Health	1		KDB
NFPA Safety	2		KDB
P_c	[5020.00; 5119.95]	kPa
P_c	5020.00	kPa	Gas-Liquid Critical Properties of Ethylene + Hydrogen and Propylene + Hydrogen Binary Mixtures
P_c	5041.00	kPa	KDB
P_c	5041.00 ± 4.00	kPa	NIST
P_c	5055.00 ± 5.04	kPa	NIST
P_c	5040.10 ± 5.00	kPa	NIST
P_c	5055.00 ± 5.00	kPa	NIST
P_c	5040.30 ± 0.20	kPa	NIST
P_c	5040.30 ± 0.20	kPa	NIST
P_c	5042.00 ± 4.00	kPa	NIST
P_c	5076.00 ± 2.00	kPa	NIST
P_c	Outlier 5119.95 ± 20.26	kPa	NIST
P_c	5061.00 ± 101.32	kPa	NIST
P_triple	[0.12; 0.12]	kPa
P_triple	0.12 ± 0.01	kPa	NIST
P_triple	0.12	kPa	NIST
ρ_c	[214.05; 530.04]	kg/m³
ρ_c	214.05 ± 0.11	kg/m³	NIST
ρ_c	214.14 ± 0.11	kg/m³	NIST
ρ_c	214.16 ± 0.02	kg/m³	NIST
ρ_c	530.04 ± 0.20	kg/m³	NIST
ρ_c	215.97 ± 0.56	kg/m³	NIST
I_np	[158.00; 188.00]
I_np	166.00		NIST
I_np	175.00		NIST
I_np	177.00		NIST
I_np	177.00		NIST
I_np	178.00		NIST
I_np	178.00		NIST
I_np	178.10		NIST
I_np	164.00		NIST
I_np	183.00		NIST
I_np	158.00		NIST
I_np	166.00		NIST
I_np	165.00		NIST
I_np	178.00		NIST
I_np	180.00		NIST
I_np	166.00		NIST
I_np	165.00		NIST
I_np	165.00		NIST
I_np	165.00		NIST
I_np	165.00		NIST
I_np	188.00		NIST
I_np	180.00		NIST
I_np	166.00		NIST
I_np	178.00		NIST
I_np	183.00		NIST
I_np	158.00		NIST
S°_liquid	117.80	J/mol×K	NIST
T_boil	[168.08; 170.45]	K
T_boil	169.38	K	KDB
T_boil	169.35 ± 0.02	K	NIST
T_boil	169.30 ± 0.20	K	NIST
T_boil	Outlier 168.08 ± 2.00	K	NIST
T_boil	169.25 ± 0.50	K	NIST
T_boil	169.00 ± 0.30	K	NIST
T_boil	169.25 ± 0.50	K	NIST
T_boil	169.43 ± 0.50	K	NIST
T_boil	169.30 ± 0.50	K	NIST
T_boil	Outlier 170.45 ± 0.70	K	NIST
T_c	[282.33; 283.10]	K
T_c	282.34	K	KDB
T_c	282.34 ± 0.02	K	NIST
T_c	282.33 ± 0.02	K	NIST
T_c	282.35 ± 0.02	K	NIST
T_c	282.33 ± 0.10	K	NIST
T_c	282.34 ± 0.00	K	NIST
T_c	282.34 ± 0.00	K	NIST
T_c	282.35 ± 0.03	K	NIST
T_c	282.65 ± 0.25	K	NIST
T_c	282.69 ± 0.30	K	NIST
T_c	Outlier 283.10 ± 0.60	K	NIST
T_fus	[103.70; 104.01]	K
T_fus	104.00	K	KDB
T_fus	104.01	K	Aq. Solubility Prediction
T_fus	103.80 ± 0.20	K	NIST
T_fus	103.70 ± 0.50	K	NIST
T_fus	103.70 ± 1.00	K	NIST
T_triple	[103.80; 104.10]	K
T_triple	103.99 ± 0.05	K	NIST
T_triple	103.98 ± 0.01	K	NIST
T_triple	103.97 ± 0.02	K	NIST
T_triple	103.97 ± 0.03	K	NIST
T_triple	104.10 ± 0.50	K	NIST
T_triple	103.97 ± 0.02	K	NIST
T_triple	103.97 ± 0.15	K	NIST
T_triple	103.95 ± 0.10	K	NIST
T_triple	Outlier 103.80 ± 0.30	K	NIST
V_c	[0.129; 0.131]	m³/kmol
V_c	0.131	m³/kmol	KDB
V_c	0.131	m³/kmol	NIST
V_c	0.131 ± 0.000	m³/kmol	NIST
V_c	0.131 ± 0.000	m³/kmol	NIST
V_c	0.129 ± 0.000	m³/kmol	NIST
Z_c	0.2815210		KDB
Z_ra	0.28		KDB

Cheméo can also estimate Enthalpy of vaporization at standard conditions for this compound, but it falls outside the models' validated range, so it is not shown here. Open the prediction tool to compute it on demand.

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
C_p,gas	[34.66; 59.25]	J/mol×K	[178.15; 463.60]

C_p,gas	34.66 ± 0.26	J/mol×K	178.15	NIST
C_p,gas	35.30 ± 0.26	J/mol×K	192.35	NIST
C_p,gas	36.29 ± 0.27	J/mol×K	210.40	NIST
C_p,gas	37.55 ± 0.28	J/mol×K	230.90	NIST
C_p,gas	39.02 ± 0.29	J/mol×K	250.60	NIST
C_p,gas	40.75 ± 0.02	J/mol×K	270.70	NIST
C_p,gas	41.02 ± 0.31	J/mol×K	271.80	NIST
C_p,gas	42.84 ± 0.32	J/mol×K	293.45	NIST
C_p,gas	43.47 ± 0.17	J/mol×K	300.00	NIST
C_p,gas	45.98 ± 0.04	J/mol×K	320.70	NIST
C_p,gas	49.74 ± 0.37	J/mol×K	367.70	NIST
C_p,gas	59.25 ± 0.44	J/mol×K	463.60	NIST
C_p,liquid	[67.17; 68.90]	J/mol×K	[110.00; 170.00]

C_p,liquid	68.90	J/mol×K	110.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
C_p,liquid	68.30	J/mol×K	120.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
C_p,liquid	67.83	J/mol×K	130.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
C_p,liquid	67.48	J/mol×K	140.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
C_p,liquid	67.26	J/mol×K	150.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
C_p,liquid	67.17	J/mol×K	160.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
C_p,liquid	67.21	J/mol×K	170.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
C_p,liquid	67.40	J/mol×K	170.00	NIST
C_p,liquid	67.24	J/mol×K	170.00	NIST
η	[0.0000939; 0.0005524]	Pa×s	[113.86; 234.56]

η	0.0005524	Pa×s	113.86	Joback Calculated Property
η	0.0003293	Pa×s	133.98	Joback Calculated Property
η	0.0002247	Pa×s	154.09	Joback Calculated Property
η	0.0001675	Pa×s	174.21	Joback Calculated Property
η	0.0001327	Pa×s	194.33	Joback Calculated Property
η	0.0001098	Pa×s	214.44	Joback Calculated Property
η	0.0000939	Pa×s	234.56	Joback Calculated Property
Δ_fusH	[3.35; 3.35]	kJ/mol	[103.95; 104.00]
Δ_fusH	3.35	kJ/mol	103.95	NIST
Δ_fusH	3.35	kJ/mol	103.97	NIST
Δ_fusH	3.35	kJ/mol	104.00	NIST
Δ_fusH	3.35	kJ/mol	104.00	NIST
Δ_subH	[15.00; 18.40]	kJ/mol	[90.00; 91.50]
Δ_subH	15.00	kJ/mol	90.00	NIST
Δ_subH	18.40	kJ/mol	91.50	NIST
Δ_vapH	[13.54; 14.40]	kJ/mol	[145.00; 267.00]

Δ_vapH	14.40	kJ/mol	145.00	NIST
Δ_vapH	14.40	kJ/mol	147.50	NIST
Δ_vapH	14.10	kJ/mol	151.00	NIST
Δ_vapH	14.30	kJ/mol	161.00	NIST
Δ_vapH	13.54	kJ/mol	169.40	KDB
Δ_vapH	13.54	kJ/mol	169.40	NIST
Δ_vapH	14.00	kJ/mol	170.00	NIST
Δ_vapH	13.70	kJ/mol	190.00	NIST
Δ_vapH	13.70	kJ/mol	221.50	NIST
Δ_vapH	13.60	kJ/mol	231.50	NIST
Δ_vapH	14.00	kJ/mol	267.00	NIST
P_vap	[1476.00; 4891.00]	kPa	[233.73; 280.98]

P_vap	1476.00	kPa	233.73	Vapor-Liquid Equilibrium (PTxy) Measurements and Modeling for the CO-C2H4 Binary System
P_vap	1932.30	kPa	243.08	Vapor-Liquid Equilibrium (PTxy) Measurements and Modeling for the CO-C2H4 Binary System
P_vap	2534.80	kPa	253.22	Vapor-Liquid Equilibrium (PTxy) Measurements and Modeling for the CO-C2H4 Binary System
P_vap	2732.00	kPa	256.22	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	2903.00	kPa	258.59	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	3083.00	kPa	261.02	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	3247.50	kPa	263.22	Vapor-Liquid Equilibrium (PTxy) Measurements and Modeling for the CO-C2H4 Binary System
P_vap	3272.00	kPa	263.48	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	3470.00	kPa	265.94	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	3648.50	kPa	268.13	Vapor-liquid equilibria of ethylene (C2H4) + decafluorobutane (C4F10) at 268 to 298 K from experiment, molecular simulation and the Peng-Robinson equation of state
P_vap	3671.00	kPa	268.37	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	3891.00	kPa	270.85	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	4094.00	kPa	273.15	Phase equilibrium and critical point data for ethylene and chlorodifluoromethane binary mixtures using a new static-analytic apparatus
P_vap	4102.00	kPa	273.18	Vapor-Liquid Equilibrium (PTxy) Measurements and Modeling for the CO-C2H4 Binary System
P_vap	4113.00	kPa	273.29	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	4339.00	kPa	275.68	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	4588.00	kPa	278.16	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
P_vap	4611.20	kPa	278.36	Vapor-liquid equilibria of ethylene (C2H4) + decafluorobutane (C4F10) at 268 to 298 K from experiment, molecular simulation and the Peng-Robinson equation of state
P_vap	4891.00	kPa	280.98	Isothermal vapor-liquid equilibrium data for the ethylene + 1,1,2,3,3,3-hexafluoro-1-propene binary system between 258 and 308 K at pressures up to 4.56 MPa
ρ_l	577.00	kg/m³	163.00	KDB
Δ_fusS	[32.23; 32.23]	J/mol×K	[103.95; 103.97]
Δ_fusS	32.23	J/mol×K	103.95	NIST
Δ_fusS	32.23	J/mol×K	103.97	NIST
γ	0.02	N/m	133.20	KDB
Δ_vapS	79.95	J/mol×K	169.40	NIST
λ	[0.02; 0.04]	W/m×K	[283.47; 425.62]

λ	0.02	W/m×K	283.47	Measurements of the thermal conductivity of ethene in the supercritical region
λ	0.02	W/m×K	283.96	Measurements of the thermal conductivity of ethene in the supercritical region
λ	0.02	W/m×K	284.89	Measurements of the thermal conductivity of ethene in the supercritical region
λ	0.02	W/m×K	302.21	Measurements of the thermal conductivity of ethene in the supercritical region
λ	0.02	W/m×K	303.10	Measurements of the thermal conductivity of ethene in the supercritical region
λ	0.04	W/m×K	425.00	Measurements of the thermal conductivity of ethene in the supercritical region
λ	0.04	W/m×K	425.62	Measurements of the thermal conductivity of ethene in the supercritical region

Correlations

Property	Value	Unit	Temperature (K)	Source
P_vap	[0.14; 5057.85]	kPa	[104.00; 282.35]	The Yaws Handbook of Vapor Pressure
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.40310e+01
Coefficient B			-1.49623e+03
Coefficient C			-1.04200e+01
Temperature range, min.			104.00
Temperature range, max.			282.35

P_vap	0.14	kPa	104.00	Calculated Property
P_vap	2.31	kPa	123.82	Calculated Property
P_vap	16.43	kPa	143.63	Calculated Property
P_vap	70.36	kPa	163.45	Calculated Property
P_vap	215.84	kPa	183.27	Calculated Property
P_vap	525.80	kPa	203.08	Calculated Property
P_vap	1084.87	kPa	222.90	Calculated Property
P_vap	1978.17	kPa	242.72	Calculated Property
P_vap	3282.00	kPa	262.53	Calculated Property
P_vap	5057.85	kPa	282.35	Calculated Property
P_vap	[0.13; 5023.31]	kPa	[104.01; 282.36]	KDB Vapor Pressure Data
Equation			ln(Pvp) = A + B/T + Cln(T) + DT^2
Coefficient A			4.31991e+01
Coefficient B			-2.35577e+03
Coefficient C			-4.89843e+00
Coefficient D			1.64142e-05
Temperature range, min.			104.01
Temperature range, max.			282.36

P_vap	0.13	kPa	104.01	Calculated Property
P_vap	2.27	kPa	123.83	Calculated Property
P_vap	16.54	kPa	143.64	Calculated Property
P_vap	70.85	kPa	163.46	Calculated Property
P_vap	215.10	kPa	183.28	Calculated Property
P_vap	517.00	kPa	203.09	Calculated Property
P_vap	1055.47	kPa	222.91	Calculated Property
P_vap	1917.59	kPa	242.73	Calculated Property
P_vap	3201.28	kPa	262.54	Calculated Property
P_vap	5023.31	kPa	282.36	Calculated Property

Similar Compounds

Find more compounds similar to Ethylene.

Mixtures

Find more mixtures with Ethylene.

Sources

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Chemical Properties of Ethylene (CAS 74-85-1)