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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
1058	Argon	7440-37-1	Ar	Overview

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Pure Component Data

Property	Points	Sets	Temperature Range	States	Sets
Critical Data	22	21	(hidden)	Critical Point	21
Density	6581	256	20-2197 K	Liquid	87
				Gas/Vapor	83
				Supercritical	60
				Further States	26
Dielectric Constant	361	24	82-412 K	Liquid	11
				Gas/Vapor	8
				Supercritical	4
				Further States	1
Diffusion Coefficient	54	5	78-353 K	Gas/Vapor	3
				Critical Point	1
				Liquid	1
Heat of Fusion	1	1	(hidden)	Solid-Liquid	1
Heat of Sublimation	1	1	29-29 K	Vapor-Solid	1
Heat of Vaporization	24	4	74-87 K	Vapor-Liquid	2
				Vapor-Solid	2
Ideal Gas Heat Capacity	2	1	273-304 K	Ideal Gas	1
Joule-Thompson Coefficient (isenthalpic dT/dP)	293	7	103-573 K	Gas/Vapor	4
				Liquid	3
Melting Point	134	20	(hidden)	Solid-Liquid	19
				Solid-Liquid-Vapor	1
Molar Heat Capacity (cP)	874	21	2-450 K	Gas/Vapor	12
				Solid	5
				Supercritical	2
				Liquid	2
Molar Heat Capacity (cV)	1028	19	110-450 K	Gas/Vapor	17
				Supercritical	2
Second Virial Coefficient	126	19	77-713 K	Gas/Vapor	19
Speed of Sound	2178	174	60-473 K	Gas/Vapor	98
				Liquid	48
				Supercritical	23
				Further States	5
Surface Tension	119	15	84-148 K	Liquid	11
				Liquid Phase of VLE	4
Thermal Conductivity	5636	511	80-5000 K	Gas/Vapor	387
				Supercritical	86
				Liquid	37
				Further States	1
Thermal Expansion Coefficient	41	1	1-38 K	Solid	1
Triple Point	16	16	(hidden)	Solid-Liquid-Vapor	16
Vapor Pressure	703	57	65-151 K	Vapor-Liquid	48
				Vapor-Solid	9
Viscosity (Dynamic)	3142	308	58-2100 K	Gas/Vapor	215
				Liquid	49
				Supercritical	43
				Further States	1
Viscosity (Kinematic)	58	9	84-273 K	Gas/Vapor	6
				Liquid	3
Octanol-Water Partition Coefficients	4	4	273-298 K
Mixture P-v-T Data	46	2	298-333 K	n.a.	n.a.

Pure Component Properties Data Bank Information Page
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