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Dortmund Data Bank Thermophysical Data for Process Design Contact: ☎ +49 441 361819 0 or ✉ info@ddbst.com

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DDB#	Name	CAS-RN	Formula
144	Pyridine	110-86-1	C5H5N	Overview

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Pure Component Data

Property	Points	Sets	Temperature Range	States	Sets
Compressibility (isentropic)	8	1	294-355 K	Liquid	1
Critical Data	14	14	(hidden)	Critical Point	14
Density	1027	219	194-620 K	Liquid	215
				Further States	4
Dielectric Constant	92	33	273-389 K	Liquid	33
Diffusion Coefficient	7	1	293-353 K	Liquid	1
Dipole Moment	1	1	298-298 K	Liquid	1
Enthalpy (H-H0)/T	43	2	10-350 K	Liquid	1
				Solid	1
Entropy	4	4	298-298 K	Gas/Vapor	4
Entropy (S-S0)	39	3	200-800 K	Ideal Gas	1
				Liquid Phase of VLE	1
				Gas/Vapor	1
Entropy of Formation	28	2	200-800 K	Ideal Gas	2
Entropy of Vaporization	1	1	323-323 K	Vapor-Liquid	1
Flash Point	1	1	(hidden)	Liquid	1
G-function	53	4	50-1500 K	Gas/Vapor	4
Gibbs Energy of Formation/T	28	2	200-800 K	Ideal Gas	2
Heat of Fusion	2	2	(hidden)	Solid-Liquid	2
Heat of Vaporization	41	21	273-420 K	Vapor-Liquid	20
				Further States	1
Ideal Gas Heat Capacity	72	7	50-1500 K	Ideal Gas	7
Melting Point	37	33	(hidden)	Solid-Liquid	33
Molar Heat Capacity (cP)	93	16	90-560 K	Liquid	10
				Gas/Vapor	3
				Solid	2
				Liquid Phase of VLE	1
Molar Saturation Heat Capacity	116	3	13-347 K	Crystal 1	1
				Liquid	1
				Solid	1
Second Virial Coefficient	12	5	338-438 K	Gas/Vapor	5
Speed of Sound	54	32	238-355 K	Liquid	32
Standard Heat of Vaporization	3	3	298-298 K	Vapor-Liquid	3
Std. Heat of Combustion	4	4	298-298 K	Liquid	3
				Gas/Vapor	1
Std. Heat of Formation	36	10	200-800 K	Gas/Vapor	5
				Liquid	3
				Ideal Gas	2
Surface Tension	56	20	194-381 K	Liquid	20
Thermal Conductivity	59	9	293-399 K	Gas/Vapor	5
				Liquid	4
Triple Point	3	3	(hidden)	Solid-Liquid-Vapor	3
Vapor Pressure	516	170	263-620 K	Vapor-Liquid	170
Viscosity (Dynamic)	279	81	273-541 K	Liquid	77
				Further States	4
Viscosity (Kinematic)	15	3	298-353 K	Liquid	3
Octanol-Water Partition Coefficients	30	30	293-298 K
Electrical Conductivities	1	1	273-273 K	n.a.	n.a.

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