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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
3027	Theophylline	58-55-9	C7H8N4O2	Overview

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Pure Component Data

Property	Points	Sets	Temperature Range	States	Sets
Density	1	1	298-298 K	Liquid	1
Heat of Fusion	15	15	(hidden)	Solid-Liquid	12
				Crystal 2 > Liquid	2
				Crystal 1 > Liquid	1
Heat of Sublimation	7	7	298-490 K	Vapor-Solid	3
				Crystal 2-Vapor	2
				Crystal 1-Vapor	2
Heat of Transition	1	1	505-505 K	Crystal 2 > Crystal 1	1
Melting Point	18	18	(hidden)	Solid-Liquid	17
				Crystal 2 > Liquid	1
Standard Heat of Sublimation	3	3	298-298 K	Vapor-Solid	3
Std. Heat of Combustion	1	1	298-298 K	Solid	1
Std. Heat of Formation	2	2	298-298 K	Gas/Vapor	1
				Solid	1
Vapor Pressure	56	5	414-607 K	Vapor-Solid	2
				Crystal 2-Vapor	1
				Crystal 1-Vapor	1
				Vapor-Liquid	1
Octanol-Water Partition Coefficients	4	4	293-303 K

Pure Component Properties Data Bank Information Page

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