Ethane C2H6 Density Specific Weight Temperature Pressure

Overview

Engineering reference data for Ethane C2H6 Density Specific Weight Temperature Pressure in thermodynamics.

Key Formulas

First Law

$\Delta U = Q - W$

Energy is conserved — heat added minus work done.

Ideal Gas Law

$PV = nRT$

Relates pressure, volume, and temperature of an ideal gas.

Heat Transfer

$Q = mc\Delta T$

Sensible heat transfer.

Carnot Efficiency

$\eta = 1 - T_C/T_H$

Maximum efficiency between two temperatures.

Variables

Symbol	Description	Unit
$U$	Internal energy	J
$Q$	Heat	J
$W$	Work	J
$P$	Pressure	Pa
$V$	Volume	m³
$T$	Temperature	K

Density and Specific Weight Data

The data below tabulates ethane density and specific weight at varying temperature and pressure across different phases. Ethane has a boiling point of -88°C (-127°F) at atmospheric pressure, meaning it exists as a liquid below this temperature.

Phase Behavior Overview

Phase	Description
Liquid at equilibrium	Liquid phase along the saturation curve where liquid and vapor coexist
Gas at equilibrium	Vapor phase along the saturation curve where liquid and vapor coexist
Liquid (1 bara)	Subcooled liquid at 1 bar pressure
Gas (1 bara)	Gas phase at 1 bar pressure

The critical point of ethane occurs at 305.32 K (32.17°C / 89.91°F) and 48.72 bara (706.6 psia), where the liquid and gas phases become indistinguishable.

Density and Specific Weight Table

References

• Original Source