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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
128	Octane	111-65-9	C8H18	Overview

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Pure Component Data

Property	Points	Sets	Temperature Range	States	Sets
Compressibility (isentropic)	6	5	298-313 K	Liquid	5
Compressibility (isothermal)	10	4	293-333 K	Liquid	4
Critical Data	49	49	(hidden)	Critical Point	49
Density	4310	572	216-623 K	Liquid	552
				Further States	20
Dielectric Constant	57	16	223-398 K	Liquid	16
Diffusion Coefficient	11	4	233-343 K	Liquid	4
Entropy	1	1	298-298 K	Gas/Vapor	1
Flash Point	19	14	(hidden)	Liquid	14
G-function	7	1	298-1500 K	Gas/Vapor	1
Heat of Fusion	5	5	(hidden)	Solid-Liquid	5
Heat of Vaporization	67	21	298-569 K	Vapor-Liquid	21
Ideal Gas Heat Capacity	17	3	298-1500 K	Ideal Gas	3
Melting Point	53	47	(hidden)	Solid-Liquid	47
Molar Heat Capacity (cP)	730	80	13-633 K	Liquid	58
				Gas/Vapor	17
				Solid	4
				Further States	1
Molar Heat Capacity (cV)	224	13	400-733 K	Gas/Vapor	12
				Liquid	1
Second Virial Coefficient	59	10	338-623 K	Gas/Vapor	10
Speed of Sound	1148	142	223-643 K	Liquid	129
				Supercritical	10
				Further States	3
Standard Heat of Vaporization	1	1	298-298 K	Vapor-Liquid	1
Std. Heat of Combustion	3	3	298-298 K	Liquid	3
Std. Heat of Formation	3	3	298-298 K	Gas/Vapor	3
Surface Tension	169	39	218-569 K	Liquid	35
				Liquid Phase of VLE	3
				Further States	1
Thermal Conductivity	776	72	223-678 K	Liquid	55
				Gas/Vapor	8
				Supercritical	7
				Further States	2
Thermal Expansion Coefficient	98	9	278-348 K	Liquid	9
Vapor Pressure	964	224	217-570 K	Vapor-Liquid	224
Vapor Pressure (Boiling Point Only)	1	1	(hidden)	Vapor-Liquid	1
Viscosity (Dynamic)	1696	245	211-688 K	Liquid	221
				Gas/Vapor	21
				Further States	3
Viscosity (Kinematic)	91	29	263-687 K	Liquid	24
				Gas/Vapor	5
Octanol-Water Partition Coefficients	8	8	296-298 K

Pure Component Properties Data Bank Information Page

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