Chemical Properties of 1,2-Ethanediol (CAS 107-21-1)

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InChI

InChI=1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2

InChI Key

LYCAIKOWRPUZTN-UHFFFAOYSA-N

Formula

C2H6O2

SMILES

OCCO

Molecular Weight¹

62.07

CAS

107-21-1

Other Names

• 1,2-Dihydroxyethane
• 1,2-Ethandiol
• 1,2-Ethylene glycol
• 146AR
• 2-Hydroxyethanol
• Aethylenglykol
• Aliphatic diol
• Athylenglykol
• Dihydroxyethane
• Dowtherm SR 1
• Ethane-1,2-diol
• Ethanediol
• Ethylene alcohol
• Ethylene dihydrate
• Ethylene glycol
• Ethylene gycol
• Fridex
• Glycol
• Glycol alcohol
• Glygen
• HOCH2CH2OH
• Ilexan E
• Lutrol 9
• M.e.g.
• MEG 100
• Macrogol 400 BPC
• Monoethylene glycol
• NSC 93876
• Norkool
• Ramp
• Tescol
• Ucar 17
• Union Carbide XL 54 Type I De-icing Fluid
• Zerex

Sources

• Joback Method
• NIST Webbook
• Crippen Method

• PAff: Proton affinity (kJ/mol).
• BasG: Gas basicity (kJ/mol).
• 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).
• η: Dynamic viscosity (Pa×s).
• 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).
• logP_oct/wat: Octanol/Water partition coefficient.
• P_c: Critical Pressure (kPa).
• Δ_fusS: Entropy of fusion at a given temperature (J/mol×K).
• S°_gas: Molar entropy at standard conditions (J/mol×K).
• S°_liquid: Liquid phase molar entropy at standard conditions (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/kg-mol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
PAff	815.90	kJ/mol	NIST
BasG	773.60	kJ/mol	NIST
ΔcH°liquid	[-1202.60; -1184.60]	kJ/mol
ΔcH°liquid	-1184.60 ± 2.80	kJ/mol	NIST
ΔcH°liquid	-1188.80 ± 0.67	kJ/mol	NIST
ΔcH°liquid	-1190.20	kJ/mol	NIST
ΔcH°liquid	-1189.00 ± 0.80	kJ/mol	NIST
ΔcH°liquid	-1189.60 ± 0.71	kJ/mol	NIST
ΔcH°liquid	Outlier -1202.60 ± 1.20	kJ/mol	NIST
ΔcH°liquid	-1191.40 ± 1.20	kJ/mol	NIST
ΔfG°	-307.68	kJ/mol	Joback Calculated Property
ΔfH°gas	[-394.40; -387.50]	kJ/mol
ΔfH°gas	-394.40 ± 2.80	kJ/mol	NIST
ΔfH°gas	-388.00 ± 2.00	kJ/mol	NIST
ΔfH°gas	-390.30	kJ/mol	NIST
ΔfH°gas	-389.30	kJ/mol	NIST
ΔfH°gas	-387.50	kJ/mol	NIST
ΔfH°liquid	[-460.00; -453.10]	kJ/mol
ΔfH°liquid	-460.00 ± 2.80	kJ/mol	NIST
ΔfH°liquid	-455.60 ± 0.80	kJ/mol	NIST
ΔfH°liquid	-455.85	kJ/mol	NIST
ΔfH°liquid	-454.90 ± 0.30	kJ/mol	NIST
ΔfH°liquid	-453.10 ± 1.20	kJ/mol	NIST
ΔfusH°	9.11	kJ/mol	Joback Calculated Property
ΔvapH°	[63.40; 68.20]	kJ/mol
ΔvapH°	65.40 ± 0.30	kJ/mol	NIST
ΔvapH°	66.00 ± 0.20	kJ/mol	NIST
ΔvapH°	66.20	kJ/mol	NIST
ΔvapH°	63.40 ± 0.10	kJ/mol	NIST
ΔvapH°	65.60	kJ/mol	NIST
ΔvapH°	65.60 ± 0.30	kJ/mol	NIST
ΔvapH°	65.60 ± 0.30	kJ/mol	NIST
ΔvapH°	63.70 ± 0.10	kJ/mol	NIST
ΔvapH°	66.10 ± 0.30	kJ/mol	NIST
ΔvapH°	68.20 ± 0.80	kJ/mol	NIST
ΔvapH°	67.60	kJ/mol	NIST
ΔvapH°	63.60	kJ/mol	NIST
ΔvapH°	63.80	kJ/mol	NIST
IE	[10.16; 10.55]	eV
IE	10.16	eV	NIST
IE	10.55	eV	NIST
IE	10.55	eV	NIST
IE	10.50	eV	NIST
logPoct/wat	-1.029		Crippen Calculated Property
Pc	8200.00 ± 200.00	kPa	NIST
Pc	9000.00 ± 100.00	kPa	NIST
Pc	13100.00 ± 1000.00	kPa	NIST
S°gas	311.84	J/mol×K	NIST
S°liquid	166.90	J/mol×K	NIST
S°liquid	179.50	J/mol×K	NIST
Tboil	[455.00; 472.15]	K
Tboil	471.20	K	NIST
Tboil	470.45 ± 0.30	K	NIST
Tboil	470.45 ± 0.05	K	NIST
Tboil	470.00 ± 2.00	K	NIST
Tboil	470.75	K	NIST
Tboil	472.15 ± 0.30	K	NIST
Tboil	470.55 ± 0.15	K	NIST
Tboil	470.55 ± 0.50	K	NIST
Tboil	470.55 ± 0.15	K	NIST
Tboil	469.90 ± 1.00	K	NIST
Tboil	Outlier 455.00 ± 1.00	K	NIST
Tboil	470.35 ± 0.50	K	NIST
Tboil	468.65 ± 2.00	K	NIST
Tboil	470.55 ± 0.60	K	NIST
Tboil	470.55 ± 0.30	K	NIST
Tboil	470.70 ± 0.50	K	NIST
Tboil	470.45 ± 0.25	K	NIST
Tboil	470.35 ± 0.50	K	NIST
Tboil	471.00 ± 0.10	K	NIST
Tboil	470.40 ± 0.50	K	NIST
Tboil	470.55 ± 0.40	K	NIST
Tboil	466.15 ± 3.00	K	NIST
Tboil	470.60 ± 0.50	K	NIST
Tboil	470.60 ± 0.50	K	NIST
Tboil	470.60 ± 0.50	K	NIST
Tboil	470.60 ± 0.50	K	NIST
Tboil	470.55 ± 0.50	K	NIST
Tboil	470.70 ± 0.50	K	NIST
Tboil	470.00 ± 2.00	K	NIST
Tboil	470.52 ± 0.50	K	NIST
Tboil	470.65 ± 2.00	K	NIST
Tboil	470.65 ± 3.00	K	NIST
Tc	[645.00; 790.00]	K
Tc	720.00 ± 4.00	K	NIST
Tc	720.00 ± 1.00	K	NIST
Tc	718.00 ± 1.00	K	NIST
Tc	645.00 ± 30.00	K	NIST
Tc	790.00 ± 30.00	K	NIST
Tfus	[259.25; 262.00]	K
Tfus	260.46 ± 0.05	K	NIST
Tfus	260.45	K	NIST
Tfus	260.15 ± 0.50	K	NIST
Tfus	259.25 ± 0.50	K	NIST
Tfus	260.55 ± 0.25	K	NIST
Tfus	259.95 ± 0.50	K	NIST
Tfus	260.55 ± 0.40	K	NIST
Tfus	262.00 ± 1.50	K	NIST
Tfus	261.70 ± 1.00	K	NIST
Ttriple	[256.60; 260.80]	K
Ttriple	256.60 ± 0.20	K	NIST
Ttriple	260.60 ± 0.20	K	NIST
Ttriple	260.60 ± 0.20	K	NIST
Ttriple	260.80 ± 0.30	K	NIST
Vc	0.185	m3/kg-mol	Joback Calculated Property

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	99.75	J/mol×K	429.52	Joback Calculated Property
Cp,liquid	[145.20; 150.60]	J/mol×K	[293.00; 303.00]
Cp,liquid	149.40	J/mol×K	293.0	NIST
Cp,liquid	145.60	J/mol×K	293.4	NIST
Cp,liquid	149.80	J/mol×K	298.0	NIST
Cp,liquid	149.30	J/mol×K	298.0	NIST
Cp,liquid	147.30	J/mol×K	298.0	NIST
Cp,liquid	148.87	J/mol×K	298.0	NIST
Cp,liquid	149.60	J/mol×K	298.15	NIST
Cp,liquid	150.33	J/mol×K	298.15	NIST
Cp,liquid	150.60	J/mol×K	301.2	NIST
Cp,liquid	145.20	J/mol×K	303.0	NIST
η	0.0002208	Pa×s	429.52	Joback Calculated Property
ΔfusH	9.96	kJ/mol	260.6	NIST
ΔfusH	11.60	kJ/mol	260.8	NIST
ΔvapH	[57.30; 68.00]	kJ/mol	[273.00; 436.50]
ΔvapH	61.90 ± 6.30	kJ/mol	273.0	NIST
ΔvapH	62.40 ± 4.00	kJ/mol	345.5	NIST
ΔvapH	61.10	kJ/mol	383.0	NIST
ΔvapH	57.40	kJ/mol	385.5	NIST
ΔvapH	62.50	kJ/mol	390.5	NIST
ΔvapH	65.20	kJ/mol	398.0	NIST
ΔvapH	64.00	kJ/mol	398.0	NIST
ΔvapH	68.00 ± 2.00	kJ/mol	409.0	NIST
ΔvapH	61.10	kJ/mol	427.0	NIST
ΔvapH	57.30	kJ/mol	436.5	NIST
ΔfusS	38.21	J/mol×K	260.6	NIST
ΔfusS	44.57	J/mol×K	260.8	NIST

Molecular Descriptors

Joback and Reid Groups
-OH (alcohol)	2
-CH2-	2

Similar Compounds

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