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Dortmund Data Bank
Thermophysical Data for Process Design
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DDB#
Name
CAS-RN
Formula
18255
Neptunium
7439-99-8
Np
Overview
Search for mixtures containing this component
Pure Component Data
Property
Points
Sets
Temperature
Range
States
Sets
Enthalpy (H-H0)
34
1
8-300 K
Solid
1
Heat of Fusion
1
1
(hidden)
Solid-Liquid
1
Heat of Transition
2
2
554-848 K
Crystal 3 > Crystal 2
1
Crystal 2 > Crystal 1
1
Heat of Vaporization
1
1
1800-1800 K
Vapor-Liquid
1
Molar Heat Capacity (cP)
34
1
8-300 K
Solid
1
Vapor Pressure
8
1
1618-2074 K
Vapor-Liquid
1
Pure Component Properties Data Bank Information Page
Dortmund Data Bank Version: February 2024
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Overall Statistics on Systems, Sets, and Points
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