Chemical Properties of 1,3-Dimethyl-5-ethyluracil (CAS 31703-08-9)

InChI

InChI=1S/C8H12N2O2/c1-4-6-5-9(2)8(12)10(3)7(6)11/h5H,4H2,1-3H3

InChI Key

RGFNQXKFHSVDHI-UHFFFAOYSA-N

Formula

C8H12N2O2

SMILES

CCc1cn(C)c(=O)n(C)c1=O

Molecular Weight¹

168.19

CAS

31703-08-9

Other Names

• 2,4(1H,3H)-pyrimidinedione, 5-ethyl-1,3-dimethyl-
• uracil, 5-ethyl-1,3-dimethyl-

• ω : Acentric Factor.
• C_p,solid : Solid 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_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).
• 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).
• V_c : Critical Volume (m³/kmol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,solid	[241.10; 291.10]	J/mol×K	[298.15; 343.15]
Cp,solid	241.10	J/mol×K	298.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
Cp,solid	250.10	J/mol×K	303.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
Cp,solid	256.50	J/mol×K	308.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
Cp,solid	261.00	J/mol×K	313.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
Cp,solid	264.30	J/mol×K	318.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
Cp,solid	267.40	J/mol×K	323.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
Cp,solid	270.70	J/mol×K	328.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
Cp,solid	275.20	J/mol×K	333.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
Cp,solid	281.70	J/mol×K	338.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
Cp,solid	291.10	J/mol×K	343.15	Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
ΔfusH	19.40	kJ/mol	354.40	NIST
ΔsubH	[98.70; 110.00]	kJ/mol	[308.00; 329.50]
ΔsubH	99.30 ± 0.20	kJ/mol	308.00	NIST
ΔsubH	98.70 ± 1.70	kJ/mol	316.50	NIST
ΔsubH	110.00 ± 1.20	kJ/mol	329.50	NIST

Similar Compounds

Find more compounds similar to 1,3-Dimethyl-5-ethyluracil.

Sources

• Cheméo Relay (1.0)
• Cheméo Relay (1.0, beta) Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
• Crippen Method
• Crippen Method
• Heat Capacities of Uracil, Thymine, and Its Alkylated, Cyclooligomethylenated, and Halogenated Derivatives by Differential Calorimetry
• McGowan Method
• NIST Webbook

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