Propane C3H8 Density Specific Weight Temperature Pressure

Overview

Engineering reference data for Propane C3H8 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

Propane Density and Specific Weight Data

The following table provides comprehensive density and specific weight values for propane across liquid and gas phases at various temperatures and pressures.

Critical Point and Phase Behavior

Property	Value
Critical Temperature	369.83 K (96.68°C / 206.02°F)
Critical Pressure	42.48 bara (616.1 psia)
Critical Density	220.5 kg/m³ (5.000 mol/dm³)
Boiling Point	231 K (-42.2°C / -44°F) at 1 atm

Key Note: The density of liquid propane is nearly constant for all pressures up to 100 bara and 50°C (100°F). For most practical applications, the liquid density at equilibrium pressure (saturation conditions) can be used as a reliable approximation.

Density Unit Conversions

From kg/m³

To Unit	Multiply by
g/l	1
g/cm³	0.001
kg/l	0.001
lb/ft³	0.06243
lb/in³	3.6127 × 10⁻⁵
lb/gal (US liq)	0.008345
lb/gal (UK)	0.010022
oz/ft³	0.99885
oz/in³	0.0005780
slug/ft³	0.0019403
ton(long)/yd³	0.0007525

From lb/ft³

To Unit	Multiply by
kg/m³	16.01845
g/cm³	0.01602
lb/gal (US liq)	0.1349
lb/gal (UK)	0.1605
oz/gal (US liq)	2.1389
oz/gal (UK)	2.5687
lb/yd³	27
lb/in³	0.0005787

Related Properties

For additional propane thermophysical properties at varying conditions, see:

• Dynamic and kinematic viscosity
• Prandtl number
• Specific heat (heat capacity)
• Thermal conductivity
• Thermal diffusivity

Interactive Charts

References

• Original Source