Product Description
Ethylene (C₂H₄) is a colorless, flammable low-temperature gas with extreme cold resistance. It is barely soluble in water and slightly soluble in ethanol, with excellent solubility in organic solvents. With active molecular properties and mature industrial preparation technology, it enjoys stable supply and extremely wide industrial applicability.
Product Parameters
| Melting point | -169 °C(lit.) |
| Boiling point | -104 °C(lit.) |
| Density | 0.00126 |
| Vapor density | 0.97 (vs air) |
| Vapor pressure | 35.04 atm (20 °C) |
| Refractive index | 1.363 |
| Flash point | -100°C |
| State | colorless gas |
| Explosive limits | 36% |
| Water solubility | 90.91g/L(25 °C) |
| Specific heat capacity | Cp(gas): 1.53 J/(g-K), at 25℃ |
| Freezing point | -169.4°℃ |
| Merck | 133,825 |
| BRN | 1730731 |
| Henry's Law Constant | 5.9x10-5 mol/(m3Pa) at 25°C, Burkholder et al. (2019) |
| Stability | Stable. Highly flammable – note the wide explosion limits. Incompatible with strong oxidizers. Easily forms explosive mixtures with air. |
| InChI | 1S/C2H4/c1-2/h1-2H2 |
| InChIKey | VGGSQFUCUMXWEO-UHFFFAOYSA-N |
| SMILES | C=C |
Application Scenarios
Petrochemical & Synthetic Materials Industry – Dominantly used for synthesizing polyethylene resin, ethylene-propylene rubber, PVC and polystyrene materials. It also acts as a key intermediate for producing ethylene glycol, acetaldehyde and various organic acid derivatives, running through the whole fine chemical chain.
Agricultural Regulation – Widely applied in crop and fruit planting management to adjust growth cycles, accelerate uniform ripening and realize standardized post-harvest storage and maturation control.
