Chemical Properties of Pyridine, 4-ethyl- (CAS 536-75-4)

InChI

InChI=1S/C7H9N/c1-2-7-3-5-8-6-4-7/h3-6H,2H2,1H3

InChI Key

VJXRKZJMGVSXPX-UHFFFAOYSA-N

Formula

C7H9N

SMILES

CCc1ccncc1

Molecular Weight¹

107.15

CAS

536-75-4

Other Names

• .gamma.-ethylpyridine
• 4-(C2H5)-Pyridine
• 4-ethylpyridine
• GAMMA-ETHYLPYRIDINE
• «gamma»-Ethylpyridine

• ω : Acentric Factor.
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (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).
• P_vap : Vapor pressure (kPa).
• ρ_l : Liquid Density (kg/m³).
• 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

Property	Value	Unit	Source
ω	0.3530		KDB
ΔfG°	179.92	kJ/mol	Relay (1.0-beta) Calculated Property
ΔfH°gas	80.22	kJ/mol	Relay (1.0) Calculated Property
ΔvapH°	48.14	kJ/mol	Relay (1.0) Calculated Property
IE	9.54	eV	Relay (1.0) Calculated Property
log10WS	-0.36		Relay (1.0) Calculated Property
logPoct/wat	1.644		Crippen Calculated Property
McVol	95.710	ml/mol	McGowan Calculated Property
Pc	4100.00	kPa	KDB
Tboil	410.10	K	KDB
Tc	[653.00; 663.00]	K
Tc	653.00	K	Critical point measurements of four pyridines
Tc	663.00	K	KDB
Tfus	183.00	K	KDB
Vc	0.347	m3/kmol	Relay (1.0) Calculated Property

Temperature Dependent Properties

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 202.65]	kPa	[328.88; 469.07]	The Yaws Handbook of Vapor Pressure
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.47994e+01
Coefficient B			-3.84209e+03
Coefficient C			-6.41230e+01
Temperature range, min.			328.88
Temperature range, max.			469.07
Pvap	1.33	kPa	328.88	Calculated Property
Pvap	2.99	kPa	344.46	Calculated Property
Pvap	6.14	kPa	360.03	Calculated Property
Pvap	11.76	kPa	375.61	Calculated Property
Pvap	21.16	kPa	391.19	Calculated Property
Pvap	36.10	kPa	406.76	Calculated Property
Pvap	58.78	kPa	422.34	Calculated Property
Pvap	91.90	kPa	437.92	Calculated Property
Pvap	138.65	kPa	453.49	Calculated Property
Pvap	202.65	kPa	469.07	Calculated Property
Pvap	[2.17; 12.37]	kPa	[333.15; 373.15]	KDB Vapor Pressure Data
Equation			ln(Pvp) = A + B/T + C*ln(T) + D*T^2
Coefficient A			1.47803e+02
Coefficient B			-1.10550e+04
Coefficient C			-1.98968e+01
Coefficient D			1.55614e-05
Temperature range, min.			333.15
Temperature range, max.			373.15
Pvap	2.17	kPa	333.15	Calculated Property
Pvap	2.70	kPa	337.59	Calculated Property
Pvap	3.34	kPa	342.04	Calculated Property
Pvap	4.10	kPa	346.48	Calculated Property
Pvap	5.01	kPa	350.93	Calculated Property
Pvap	6.07	kPa	355.37	Calculated Property
Pvap	7.31	kPa	359.82	Calculated Property
Pvap	8.76	kPa	364.26	Calculated Property
Pvap	10.44	kPa	368.71	Calculated Property
Pvap	12.37	kPa	373.15	Calculated Property

Similar Compounds

Find more compounds similar to Pyridine, 4-ethyl-.

Sources

• KDB Vapor Pressure Data
• 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
• Critical point measurements of four pyridines
• KDB
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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