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Dortmund Data Bank
Thermophysical Data for Process Design
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DDB#
Name
CAS-RN
Formula
745
Heptanoic acid
111-14-8
C
7
H
1
4
O
2
Overview
Search for mixtures containing this component
Pure Component Data
Property
Points
Sets
Temperature
Range
States
Sets
Critical Data
4
4
(hidden)
Critical Point
4
Density
157
38
266-504 K
Liquid
36
Gas/Vapor
2
Dielectric Constant
7
2
288-423 K
Liquid
2
Heat of Fusion
2
2
(hidden)
Solid-Liquid-Vapor
1
Solid-Liquid
1
Heat of Transition
1
1
225-225 K
Solid-Solid
1
Heat of Vaporization
6
4
282-306 K
Vapor-Liquid
4
Melting Point
18
18
(hidden)
Solid-Liquid
16
Crystal 1 > Liquid
1
Supercooled Liquid - Solid
1
Molar Heat Capacity (cP)
229
30
6-348 K
Crystal 2
12
Crystal 1
11
Liquid
5
Further States
2
Speed of Sound
19
8
273-423 K
Liquid
8
Std. Heat of Combustion
6
4
288-298 K
Liquid
4
Std. Heat of Formation
3
3
298-298 K
Liquid
3
Surface Tension
13
7
273-333 K
Liquid
7
Thermal Conductivity
10
1
296-471 K
Liquid
1
Vapor Pressure
220
37
270-498 K
Vapor-Liquid
37
Viscosity (Dynamic)
41
10
278-428 K
Liquid
10
Pure Component Properties Data Bank Information Page
Dortmund Data Bank Version: February 2024
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