Ethanol Ethyl Alcohol Density Specific Weight Temperature Pressure
Reference data and engineering information about ethanol ethyl alcohol density specific weight temperature pressure for thermodynamics applications.
Overview
Engineering reference data for Ethanol Ethyl Alcohol Density Specific Weight Temperature Pressure in thermodynamics.
Key Formulas
First Law
Energy is conserved — heat added minus work done.
Ideal Gas Law
Relates pressure, volume, and temperature of an ideal gas.
Heat Transfer
Sensible heat transfer.
Carnot Efficiency
Maximum efficiency between two temperatures.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Internal energy | J | |
| Heat | J | |
| Work | J | |
| Pressure | Pa | |
| Volume | m³ | |
| 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
Temperature(K) | Temperature(°C) | Pressure(bara) | Density(kg/m³) | Density(lbm/ft³) | Specific Weight(N/m³) |
|---|---|---|---|---|---|
| 250 | -23.2 | 0.0027 | 825.2 | 51.51 | 8092 |
| 280 | 6.9 | 0.0258 | 800.5 | 49.97 | 7850 |
| 310 | 36.9 | 0.153 | 775.3 | 48.4 | 7603 |
| 340 | 66.9 | 0.635 | 747.8 | 46.68 | 7333 |
| 370 | 96.9 | 2.021 | 716.7 | 44.74 | 7029 |
| 400 | 127 | 5.245 | 680.6 | 42.49 | 6675 |
| 423.9 | 151 | 10 | 647.2 | 40.41 | 6347 |
| 430 | 157 | 11.65 | 637.7 | 39.81 | 6254 |
| 460 | 187 | 22.92 | 584 | 36.46 | 5727 |
| 490 | 217 | 40.95 | 507.1 | 31.66 | 4973 |
| 501.4 | 228 | 50 | 461.3 | 28.8 | 4524 |
| 513.9 | 241 | 61.48 | 276 | 17.23 | 2707 |
Source: engineeringtoolbox.com
Ethanol Vapor at Equilibrium
Temperature(K) | Temperature(°C) | Pressure(bara) | Density(kg/m³) | Density(lbm/ft³) | Specific Weight(N/m³) |
|---|---|---|---|---|---|
| 250 | -23.2 | 0.0027 | 0.006 | 0.00037 | 0.059 |
| 280 | 6.9 | 0.0258 | 0.0512 | 0.0032 | 0.502 |
| 298.2 | 25 | 0.08 | 0.145 | 0.00905 | 1.42 |
| 310 | 36.9 | 0.153 | 0.276 | 0.0172 | 2.7 |
| 340 | 66.9 | 0.635 | 1.058 | 0.0661 | 10.4 |
| 370 | 96.9 | 2.021 | 3.181 | 0.1986 | 31.2 |
| 400 | 127 | 5.245 | 8.009 | 0.5 | 78.5 |
| 423.9 | 151 | 10 | 15.25 | 0.9518 | 150 |
| 430 | 157 | 11.65 | 17.82 | 1.113 | 175 |
| 460 | 187 | 22.92 | 36.69 | 2.29 | 360 |
| 490 | 217 | 40.95 | 74.37 | 4.643 | 729 |
| 501.4 | 228 | 50 | 100.5 | 6.272 | 985 |
| 513.9 | 241 | 61.48 | 276 | 17.23 | 2707 |
Source: engineeringtoolbox.com
Ethanol at Fixed Pressures
State | Temperature(K) | Temperature(°C) | Pressure(bara) | Density(kg/m³) | Density(lbm/ft³) | Specific Weight(N/m³) |
|---|---|---|---|---|---|---|
| Liquid | 300 | 26.9 | 1 | 783.9 | 48.94 | 7688 |
| Liquid | 351.1 | 77.9 | 1 | 736.8 | 46 | 7226 |
| Gas | 351.1 | 77.9 | 1 | 1.627 | 0.1016 | 16 |
| Gas | 400 | 127 | 1 | 1.409 | 0.0879 | 13.8 |
| Gas | 500 | 227 | 1 | 1.114 | 0.0696 | 10.9 |
| Gas | 600 | 327 | 1 | 0.93 | 0.0578 | 9.07 |
| Liquid | 300 | 26.9 | 10 | 784.8 | 48.99 | 7696 |
| Liquid | 400 | 127 | 10 | 681.6 | 42.55 | 6684 |
| Liquid | 423.9 | 151 | 10 | 647.2 | 40.41 | 6347 |
| Gas | 423.9 | 151 | 10 | 15.25 | 0.9518 | 150 |
| Gas | 500 | 227 | 10 | 11.78 | 0.7353 | 116 |
| Gas | 600 | 327 | 10 | 9.415 | 0.5878 | 92.3 |
| Liquid | 300 | 26.9 | 50 | 788.3 | 49.21 | 7731 |
Source: engineeringtoolbox.com
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.