Ethanol Ethyl Alcohol Density Specific Weight Temperature Pressure

Overview

Engineering reference data for Ethanol Ethyl Alcohol 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

Ethanol Density and Specific Weight Data

The following table presents density and specific weight values for ethanol at various temperatures and pressures, covering both liquid and gas phases along the equilibrium curve and at fixed pressures.

Liquid Ethanol at Equilibrium

Ethanol Vapor at Equilibrium

Ethanol at Fixed Pressures

Density Unit Conversions

The following conversion factors are useful for converting between common density units:

From	To	Multiply by
1 g/cm³	kg/m³	1000
1 g/cm³	lb/ft³	62.428
1 g/cm³	sl/ft³	1.9403
1 kg/m³	g/l	1
1 kg/m³	lb/ft³	0.06243
1 lb/ft³	kg/m³	16.01845
1 lb/ft³	g/cm³	0.01602
1 sl/ft³	kg/m³	515.379

Key Physical Properties of Ethanol

Boiling Point: 77.9°C (351.1 K) at 1 bara (atmospheric pressure)

Critical Point:

• Temperature: 241°C (513.9 K)
• Pressure: 61.48 bara (891.7 psia)
• Density at critical point: 276.0 kg/m³

Liquid Density Behavior: The density of liquid ethanol is nearly the same for all pressures up to 100 bara. For most practical engineering purposes, the density values at equilibrium pressure can be used regardless of the actual system pressure.

Interactive Charts

References

• Original Source