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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
51	Cyclopentane	287-92-3	C5H10	Overview

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Pure Component Data

Property	Points	Sets	Temperature Range	States	Sets
Critical Data	10	8	(hidden)	Critical Point	8
Density	683	100	175-508 K	Liquid	98
				Further States	2
Dielectric Constant	33	6	115-313 K	Liquid	4
				Crystal 2	1
				Crystal 1	1
Entropy	8	8	298-298 K	Gas/Vapor	8
G-function	45	3	100-1500 K	Gas/Vapor	3
Heat of Fusion	5	5	(hidden)	Solid-Liquid	5
Heat of Transition	9	9	122-138 K	Solid-Solid	4
				Crystal 2 > Crystal 1	3
				Crystal 3 > Crystal 2	2
Heat of Vaporization	7	3	295-322 K	Vapor-Liquid	3
Ideal Gas Heat Capacity	58	6	100-2500 K	Ideal Gas	6
Melting Point	25	18	(hidden)	Solid-Liquid	18
Molar Heat Capacity (cP)	243	31	12-463 K	Crystal 3	7
				Crystal 1	7
				Liquid	7
				Crystal 2	6
				Crystal 3 > Liquid	3
				Further States	1
Second Virial Coefficient	3	1	298-322 K	Gas/Vapor	1
Speed of Sound	266	29	193-493 K	Liquid	28
				Further States	1
Std. Heat of Combustion	3	3	298-298 K	Liquid	3
Std. Heat of Formation	3	3	298-298 K	Liquid	2
				Gas/Vapor	1
Surface Tension	23	11	239-313 K	Liquid	11
Thermal Conductivity	178	92	223-454 K	Liquid	89
				Further States	3
Thermal Expansion Coefficient	1	1	298-298 K	Liquid	1
Transition Temperature	28	16	(hidden)	Solid-Solid	7
				Crystal 2 > Crystal 1	5
				Crystal 3 > Crystal 2	4
Triple Point	1	1	(hidden)	Solid-Liquid-Vapor	1
Vapor Pressure	172	65	193-503 K	Vapor-Liquid	65
Viscosity (Dynamic)	371	44	180-457 K	Liquid	41
				Further States	3
Octanol-Water Partition Coefficients	6	6	298 K
Mixture Flash Points	1	1	685-685 K	n.a.	n.a.

Pure Component Properties Data Bank Information Page
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