Chemical Properties of Ethene, 1,1-difluoro- (CAS 75-38-7)

InChI

InChI=1S/C2H2F2/c1-2(3)4/h1H2

InChI Key

BQCIDUSAKPWEOX-UHFFFAOYSA-N

Formula

C2H2F2

SMILES

C=C(F)F

Molecular Weight¹

64.03

CAS

75-38-7

Other Names

• 1,1-Difluoroethene
• 1,1-Difluoroethylene
• CH2=CF2
• Ethylene, 1,1-difluoro-
• FC 1132a
• Genetron 1132a
• Halocarbon 1132A
• NCI-C60208
• UN 1959
• VDF
• Vinylidene difluoride
• Vinylidene fluoride

• 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).
• 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_vapH : Enthalpy of vaporization at a given temperature (kJ/mol).
• IE : Ionization energy (eV).
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• P_c : Critical 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.
• γ : Surface Tension (N/m).
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• V_c : Critical Volume (m³/kmol).
• Z_c : Critical Compressibility.
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ω	0.1400		KDB
PAff	734.00	kJ/mol	NIST
BasG	705.10	kJ/mol	NIST
ΔcH°gas	[-1097.00; -1087.00]	kJ/mol
ΔcH°gas	-1087.00 ± 10.00	kJ/mol	NIST
ΔcH°gas	-1097.00 ± 3.00	kJ/mol	NIST
μ	1.40	debye	KDB
ΔfG°	-321.70	kJ/mol	KDB
ΔfH°gas	[-345.40; -325.00]	kJ/mol
ΔfH°gas	-345.40	kJ/mol	KDB
ΔfH°gas	-344.00 ± 10.00	kJ/mol	NIST
ΔfH°gas	-325.00 ± 3.00	kJ/mol	NIST
ΔfH°gas	-334.00 ± 0.84	kJ/mol	NIST
ΔfusH°	4.51	kJ/mol	Joback Calculated Property
IE	[10.29; 10.70]	eV
IE	10.29 ± 0.01	eV	NIST
IE	10.29	eV	NIST
IE	10.29 ± 0.02	eV	NIST
IE	10.29	eV	NIST
IE	10.29 ± 0.01	eV	NIST
IE	10.31	eV	NIST
IE	10.31 ± 0.02	eV	NIST
IE	10.30	eV	NIST
IE	Outlier 10.70 ± 0.02	eV	NIST
IE	10.69 ± 0.02	eV	NIST
logPoct/wat	1.397		Crippen Calculated Property
McVol	38.280	ml/mol	McGowan Calculated Property
Pc	[4433.31; 4460.00]	kPa
Pc	4460.00	kPa	KDB
Pc	4433.31 ± 110.32	kPa	NIST
ρc	[409.82; 416.86]	kg/m3
ρc	409.82	kg/m3	NIST
ρc	416.86 ± 14.73	kg/m3	NIST
Inp	[194.00; 214.00]
Inp	214.00		NIST
Inp	194.00		NIST
Inp	194.00		NIST
Tboil	[187.40; 190.20]	K
Tboil	187.40	K	KDB
Tboil	190.00	K	NIST
Tboil	190.20	K	NIST
Tc	[302.74; 303.25]	K
Tc	302.90	K	KDB
Tc	302.74	K	NIST
Tc	303.25 ± 0.70	K	NIST
Tfus	129.00	K	KDB
Vc	0.154	m3/kmol	KDB
Zc	0.2727220		KDB

Cheméo can also estimate Enthalpy of vaporization at standard conditions, Log10 of Water solubility in mol/l for this compound, but they fall outside the models' validated range, so they are not shown here. Open the prediction tool to compute them on demand.

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
ΔvapH	[9.50; 13.20]	kJ/mol	[233.00; 273.00]
ΔvapH	13.20	kJ/mol	233.00	NIST
ΔvapH	9.50	kJ/mol	273.00	NIST
ρl	617.00	kg/m3	297.00	KDB
γ	0.02	N/m	173.20	KDB

Correlations

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[54.65; 107.87]	J/mol×K	[273.00; 1000.00]	Joback Predicted correlation
Equation			Y = A + B·T + C·T² + D·T³ + E·T⁴ Y is Cp,gas in J/mol×K, T in K
Coefficient A			1.05700e+01
Coefficient B			1.97300e-01
Coefficient C			-1.43000e-04
Coefficient D			4.30000e-08
Coefficient E			0.00000e+00
Temperature range, min.			273.00
Temperature range, max.			1000.00
Cp,gas	54.65	J/mol×K	273.00	Calculated Property
Cp,gas	64.38	J/mol×K	353.78	Calculated Property
Cp,gas	72.83	J/mol×K	434.56	Calculated Property
Cp,gas	80.15	J/mol×K	515.33	Calculated Property
Cp,gas	86.48	J/mol×K	596.11	Calculated Property
Cp,gas	91.94	J/mol×K	676.89	Calculated Property
Cp,gas	96.67	J/mol×K	757.67	Calculated Property
Cp,gas	100.81	J/mol×K	838.44	Calculated Property
Cp,gas	104.50	J/mol×K	919.22	Calculated Property
Cp,gas	107.87	J/mol×K	1000.00	Calculated Property

Property	Value	Unit	Temperature (K)	Source
Pvap	[0.67; 3893.04]	kPa	[129.15; 302.80]	The Yaws Handbook of Vapor Pressure
Equation			ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K
Coefficient A			1.38675e+01
Coefficient B			-1.60147e+03
Coefficient C			-1.68530e+01
Temperature range, min.			129.15
Temperature range, max.			302.80
Pvap	0.67	kPa	129.15	Calculated Property
Pvap	5.46	kPa	148.44	Calculated Property
Pvap	25.89	kPa	167.74	Calculated Property
Pvap	86.24	kPa	187.03	Calculated Property
Pvap	224.84	kPa	206.33	Calculated Property
Pvap	491.04	kPa	225.62	Calculated Property
Pvap	939.64	kPa	244.92	Calculated Property
Pvap	1624.95	kPa	264.21	Calculated Property
Pvap	2595.92	kPa	283.51	Calculated Property
Pvap	3893.04	kPa	302.80	Calculated Property

Similar Compounds

Find more compounds similar to Ethene, 1,1-difluoro-.

Sources

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

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