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Dortmund Data Bank
Thermophysical Data for Process Design
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DDB#	Name	CAS-RN	Formula
2393	1,1,1,2-Tetrafluoroethane [R134a]	811-97-2	C₂H₂F₄	Overview

Property	Points	Sets	Temperature Range	States	Sets
Critical Data	36	34	(hidden)	Critical Point	34
Density	13539	287	180-453 K	Liquid	176
				Gas/Vapor	58
				Supercritical	24
				Further States	29
Dielectric Constant	446	30	206-411 K	Liquid	23
				Gas/Vapor	7
Entropy	2	2	298-298 K	Gas/Vapor	2
G-function	27	2	100-1500 K	Gas/Vapor	2
Heat of Vaporization	18	1	180-240 K	Vapor-Liquid	1
Ideal Gas Heat Capacity	78	8	100-1500 K	Ideal Gas	8
Joule-Thompson Coefficient (isenthalpic dT/dP)	45	9	298-423 K	Gas/Vapor	9
Melting Point	1	1	(hidden)	Solid-Liquid	1
Molar Heat Capacity (cP)	383	35	223-423 K	Liquid	22
				Gas/Vapor	11
				Supercritical	2
Molar Heat Capacity (cV)	150	1	187-343 K	Liquid	1
Second Virial Coefficient	28	3	235-473 K	Gas/Vapor	3
Speed of Sound	895	43	179-380 K	Gas/Vapor	26
				Liquid	14
				Further States	3
Std. Heat of Formation	1	1	298-298 K	Gas/Vapor	1
Surface Tension	142	11	223-373 K	Liquid	10
				Liquid Phase of VLE	1
Thermal Conductivity	7739	163	130-533 K	Liquid	67
				Gas/Vapor	54
				Supercritical	32
				Further States	10
Triple Point	3	3	(hidden)	Solid-Liquid-Vapor	3
Vapor Pressure	1221	114	175-374 K	Vapor-Liquid	113
				Further States	1
Viscosity (Dynamic)	1229	102	175-438 K	Liquid	70
				Gas/Vapor	21
				Supercritical	6
				Further States	5
Viscosity (Kinematic)	124	12	213-423 K	Liquid	9
				Liquid Phase of VLE	2
				Supercritical	1
Octanol-Water Partition Coefficients	3	3	278-323 K

Dortmund Data Bank Version: February 2024

What are "Sets" and "Points" in the Dortmund Data Bank?	© Dortmund Data Bank by DDBST GmbH
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