It is a liquefiable, and flammable nontoxic gas at STP. It is made of carbon, hydrogen, and fluorine. It is the derivative of methane with a fluorine atom substituted for one of the hydrogen atoms. It is used in semiconductor manufacturing processes. Its other names include fluirimethane, Freon 41, Halocarbon-41 and HFC-41.
CAS no: 593-53-3
Properties
Generic Properties
| Property | Value | Unit |
|---|---|---|
| Chemical Formula | CH3F | - |
| Molecular Weight | 34.033 | - |
| Heat of Combustion | 15235.1 | kJ/kg |
| Boiling Point | 194.82 | K |
| Freezing Point | 131.35 | K |
Critical Properties
| Property | Value | Unit |
|---|---|---|
| Critical Temperature | 317.7 | K |
| Critical Pressure | 58.77 | bar |
| Critical Volume | 113 | cm3/mol |
| Critical Density | 0.3012 | g/cm3 |
| Critical Z | 0.251 | - |
| Accentric Factor | 0.204 | - |
Temperature Dependent Properties
Specific Heat
The specific heat at constant pressure can be calculated with the formula:
| Constant | Gas | Liquid |
|---|---|---|
| A | 34.077 | 46.473 |
| B | -0.035019 | 0.37188 |
| C | 0.00022031 | -0.0018048 |
| D | -1.957E-07 | 4.8419E-06 |
| E | 5.4104E-11 | - |
| T min(K) | 100 | 141 |
| T max(K) | 1500 | 256 |
Heat of Formation
The heat of formation can be calculated with the formula:
| Constant | Value |
|---|---|
| A | -227.04 |
| B | -0.041061 |
| C | 0.000017841 |
| T min(K) | 298.15 |
| T max (K) | 1000 |
Viscosity
The viscosity can be calculated with the formula:
For liquid
For Gas
| Constant | Gas | Liquid |
|---|---|---|
| A | -0.9005 | -5.1304 |
| B | 0.4727 | 382.34 |
| C | -0.00012197 | 0.0207 |
| D | - | -0.000039813 |
| T min(K) | 195 | 238.28 |
| T max(K) | 1000 | 301.82 |
Heat of Vaporization
The heat of vaporization can be calculated with the formula:
| Constant | Value |
|---|---|
| A | 25.088 |
| n | 0.369 |
| T min(K) | 131.35 |
| T max(K) | 317.7 |
Thermal Conductivity
The thermal conductivity can be calculated with the formula:
| Constant | Gas | Liquid |
|---|---|---|
| A | -0.0054542 | 0.3734 |
| B | 0.000077196 | -0.00020838 |
| C | 4.2384E-08 | -2.0451E-06 |
| T min(K) | 195 | 131 |
| T max(K) | 1000 | 302 |
Liquid Density
The Liquid Density can be calculated with the Equation:
| Constant | Value |
|---|---|
| A | 0.2979 |
| B | 0.2415 |
| n | 0.2854 |
| T min(K) | 131.35 |
| T max(K) | 317.7 |
Diffusion Coefficient at Infinite Dilution in Water
The Diffusion Coefficient at Infinite Dilution in Water can be calculation:
| Constant | Value |
|---|---|
| A | -1.2923 |
| B | -1032.34 |
| T Min(K) | 274 |
| T Max(K) | 394 |
Diffusion Coefficient in Air
The Diffusion Coefficient in Air can be calculated with the Equation:
| Constant | Value |
|---|---|
| A | -0.08323 |
| B | 0.00052276 |
| C | 9.8643E-07 |
| T min(K) | 200 |
| T max(K) | 1000 |