Chemical Properties of Urea, ethyl- (CAS 625-52-5)

InChI

InChI=1S/C3H8N2O/c1-2-5-3(4)6/h2H2,1H3,(H3,4,5,6)

InChI Key

RYECOJGRJDOGPP-UHFFFAOYSA-N

Formula

C3H8N2O

SMILES

CCNC(N)=O

Molecular Weight¹

88.11

CAS

625-52-5

Other Names

• 1-Ethylurea
• N-Ethylurea
• Urea, 1-ethyl-
• ethylurea
• monoethylurea
• urea, monoethyl-

• Δ_cH°_solid : Standard solid enthalpy of combustion (kJ/mol).
• C_p,gas : Ideal gas 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°_solid : Solid 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_subH : Enthalpy of sublimation at a given temperature (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• 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).
• Δ_fusS : Entropy of fusion 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
ΔcH°solid	[-1976.00; -1966.10]	kJ/mol
ΔcH°solid	-1966.10 ± 0.61	kJ/mol	NIST
ΔcH°solid	-1976.00	kJ/mol	NIST
ΔfG°	1.30	kJ/mol	Joback Calculated Property
ΔfH°gas	-257.50 ± 1.00	kJ/mol	NIST
ΔfH°solid	[-357.76; -340.00]	kJ/mol
ΔfH°solid	-357.76 ± 0.74	kJ/mol	NIST
ΔfH°solid	-340.00	kJ/mol	NIST
ΔfusH°	15.42	kJ/mol	Joback Calculated Property
ΔvapH°	46.09	kJ/mol	Joback Calculated Property
log10WS	-0.45		Crippen Calculated Property
logPoct/wat	-0.325		Crippen Calculated Property
McVol	74.660	ml/mol	McGowan Calculated Property
Pc	5304.68	kPa	Joback Calculated Property
Tboil	444.61	K	Joback Calculated Property
Tc	645.43	K	Joback Calculated Property
Tfus	367.80 ± 0.50	K	NIST
Ttriple	[365.00; 368.90]	K
Ttriple	368.90 ± 0.50	K	NIST
Ttriple	365.00 ± 0.00	K	NIST
Vc	0.274	m3/kmol	Joback Calculated Property

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[151.37; 191.61]	J/mol×K	[444.61; 645.43]
T(K) Ideal gas heat capacity (J/mol×K) 150 160 170 180 190 500 600
Cp,gas	151.37	J/mol×K	444.61	Joback Calculated Property
Cp,gas	158.94	J/mol×K	478.08	Joback Calculated Property
Cp,gas	166.16	J/mol×K	511.55	Joback Calculated Property
Cp,gas	173.02	J/mol×K	545.02	Joback Calculated Property
Cp,gas	179.55	J/mol×K	578.49	Joback Calculated Property
Cp,gas	185.74	J/mol×K	611.96	Joback Calculated Property
Cp,gas	191.61	J/mol×K	645.43	Joback Calculated Property
ΔfusH	[9.60; 14.65]	kJ/mol	[356.70; 368.90]
T(K) Enthalpy of fusion at a given temperature (kJ/mol) 10 11 12 13 14 15 360 365
ΔfusH	9.60	kJ/mol	356.70	NIST
ΔfusH	14.39	kJ/mol	365.10	NIST
ΔfusH	14.39	kJ/mol	365.10	NIST
ΔfusH	13.94	kJ/mol	367.80	NIST
ΔfusH	13.90	kJ/mol	367.80	NIST
ΔfusH	14.65	kJ/mol	368.90	NIST
ΔsubH	[91.80; 100.30]	kJ/mol	[337.00; 350.00]
T(K) Enthalpy of sublimation at a given temperature (kJ/mol) 92 94 96 98 100 340 345 350
ΔsubH	100.30 ± 0.70	kJ/mol	337.00	NIST
ΔsubH	98.10 ± 1.10	kJ/mol	343.50	NIST
ΔsubH	97.80 ± 1.10	kJ/mol	343.50	NIST
ΔsubH	91.80 ± 1.20	kJ/mol	349.00	NIST
ΔsubH	96.40 ± 1.10	kJ/mol	350.00	NIST
ΔfusS	37.90	J/mol×K	367.80	NIST

Similar Compounds

Find more compounds similar to Urea, ethyl-.

Mixtures

• Urea, ethyl- + Water

Sources

• Crippen Method
• Crippen Method
• Densimetric and ultrasonic characterization of urea and its derivatives in water
• Joback Method
• McGowan Method
• NIST Webbook

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