It is the simplest member of the ketene class.
CAS no: 463-51-4
Properties
Generic Properties
| Property | Value | Unit |
|---|---|---|
| Chemical Formula | C2H2O | - |
| Molecular Weight | 42.037 | - |
| Heat of Combustion | 23338.8 | kJ/kg |
Critical Properties
| Property | Value | Unit |
|---|---|---|
| Critical Temperature | 370 | K |
| Critical Pressure | 58.1 | bar |
| Critical Volume | 144 | cm3/mol |
| Critical Density | 0.2919 | g/cm3 |
| Critical Z | 0.272 | - |
| Accentric Factor | 0.126 | - |
Temperature Dependent Properties
Specific Heat
The specific heat at constant pressure can be calculated with the formula:
| Constant | Gas | Liquid |
|---|---|---|
| A | -14.704 | 35.985 |
| B | 0.31238 | 0.43573 |
| C | -0.00043385 | -0.0019959 |
| D | 0.000000295 | 4.0303E-06 |
| E | -7.5221E-11 | - |
| Tmin (K) | 200 | 123 |
| Tmax (K) | 1500 | 333 |
Heat of Formation
The heat of formation can be calculated with the formula:
| Constant | Value |
|---|---|
| A | -44.988 |
| B | -0.0098307 |
| C | 2.4648E-06 |
| Tmin (K) | 298.15 |
| Tmax (K) | 1000 |
Viscosity
The viscosity can be calculated with the formula:
For liquid
For Gas
| Constant | Gas | Liquid |
|---|---|---|
| A | -1.53 | 159.05 |
| B | 0.3616 | -17229 |
| C | -0.000057122 | -0.4901 |
| D | - | 0.00049377 |
| Tmin (K) | 250 | 293.15 |
| Tmax (K) | 1000 | 351.5 |
Saturation Pressure
Saturation pressure can be calculated with the formula:
| Constant | Value |
|---|---|
| A | 7.08594 |
| B | 858.093 |
| C | 253.869 |
| Tmin (C) | -151.15 |
| Tmax (C) | 96.85 |
Heat of Vaporization
The heat of vaporization can be calculated with the formula:
| Constant | Value |
|---|---|
| A | 21.373 |
| n | 0.105 |
| Tmin (K) | 200 |
| Tmax (K) | 370 |
Thermal Conductivity
The thermal conductivity can be calculated with the formula:
| Constant | Gas | Liquid |
|---|---|---|
| A | -0.012717 | 0.2723 |
| B | 0.000090415 | -0.00028323 |
| C | 2.4218E-09 | -7.5858E-07 |
| Tmin (K) | 250 | 152 |
| Tmax (K) | 1000 | 300 |
Liquid Density
The Liquid Density can be calculated with the Equation:
| Constant | Value |
|---|---|
| A | 0.2919 |
| B | 0.272 |
| n | 0.2857 |
| Tmin (K) | 122 |
| Tmax (K) | 370 |
Diffusion Coefficient at Infinite Dilution in Water
The Diffusion Coefficient at Infinite Dilution in Water can be calculation:
| Constant | Value |
|---|---|
| A | -1.3511 |
| B | -1040.117 |
| Tmin (K) | 274 |
| Tmax (K) | 394 |
Diffusion Coefficient in Air
The Diffusion Coefficient in Air can be calculated with the Equation:
| Constant | Value |
|---|---|
| A | -0.05767 |
| B | 0.00043606 |
| C | 8.3755E-07 |
| Tmin (K) | 200 |
| Tmax (K) | 1000 |