Chemical Properties of Urea, tetraethyl- (CAS 1187-03-7)

InChI

InChI=1S/C9H20N2O/c1-5-10(6-2)9(12)11(7-3)8-4/h5-8H2,1-4H3

InChI Key

UWHSPZZUAYSGTB-UHFFFAOYSA-N

Formula

C9H20N2O

SMILES

CCN(CC)C(=O)N(CC)CC

Molecular Weight¹

172.27

CAS

1187-03-7

Other Names

• Tetraethylurea
• 1,1,3,3-Tetraethylurea
• Urea, 1,1,3,3-tetraethyl-
• N,N,N',N'-Tetraethylurea

• ω : Acentric Factor.
• Δ_cH°_liquid : Standard liquid 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).
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fH°_liquid : Liquid phase 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_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).
• 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	0.5654		Relay (1.0) Calculated Property
ΔcH°liquid	[-6019.90; -5845.90]	kJ/mol
ΔcH°liquid	-6019.90 ± 4.80	kJ/mol	NIST
ΔcH°liquid	-5845.90 ± 5.90	kJ/mol	NIST
ΔfG°	117.54	kJ/mol	Joback Calculated Property
ΔfH°gas	-316.40 ± 5.00	kJ/mol	NIST
ΔfH°liquid	[-554.00; -380.00]	kJ/mol
ΔfH°liquid	-380.00 ± 5.00	kJ/mol	NIST
ΔfH°liquid	-554.00 ± 5.90	kJ/mol	NIST
ΔfusH°	26.71	kJ/mol	Joback Calculated Property
ΔvapH°	62.16	kJ/mol	Relay (1.0) Calculated Property
IE	7.89	eV	Relay (1.0) Calculated Property
log10WS	-0.42		Relay (1.0) Calculated Property
logPoct/wat	1.790		Crippen Calculated Property
McVol	159.200	ml/mol	McGowan Calculated Property
Pc	2443.48	kPa	Joback Calculated Property
Tboil	482.00 ± 0.00	K	NIST
Tc	684.26	K	Relay (1.0) Calculated Property
Tfus	255.19	K	Relay (1.0) Calculated Property
Ttriple	239.70 ± 0.10	K	NIST
Vc	0.601	m3/kmol	Relay (1.0) Calculated Property

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[363.64; 444.18]	J/mol×K	[484.07; 654.92]
Cp,gas	363.64	J/mol×K	484.07	Joback Calculated Property
Cp,gas	378.71	J/mol×K	512.54	Joback Calculated Property
Cp,gas	393.09	J/mol×K	541.02	Joback Calculated Property
Cp,gas	406.80	J/mol×K	569.49	Joback Calculated Property
Cp,gas	419.87	J/mol×K	597.97	Joback Calculated Property
Cp,gas	432.33	J/mol×K	626.44	Joback Calculated Property
Cp,gas	444.18	J/mol×K	654.92	Joback Calculated Property
Cp,liquid	355.60	J/mol×K	298.15	NIST
ΔfusH	[20.55; 20.55]	kJ/mol	[253.00; 253.00]
ΔfusH	20.55	kJ/mol	253.00	NIST
ΔfusH	20.55	kJ/mol	253.00	NIST
ΔvapH	63.61 ± 0.55	kJ/mol	323.30	NIST

Similar Compounds

Find more compounds similar to Urea, tetraethyl-.

Sources

• Cheméo Relay (1.0)
• Crippen Method
• Crippen Method
• Joback Method
• McGowan Method
• NIST Webbook

Note: Cheméo is only indexing the data, follow the source links to retrieve the latest data. The source is also providing more information like the publication year, authors and more. Take the time to validate and double check the source of the data.