【Ethylene Tank Farm Technology】What are the physical and chemical properties of ethylene?

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The physical and chemical properties of ethylene? Physical and chemical properties of ethylene: a colorless gas with a slight odor characteristic of hydrocarbons. A small amount of ethylene has a mild sweet taste. Insoluble in water, slightly soluble in ethanol, ketones, and benzene; soluble in ether and organic solvents such as carbon tetrachloride. The maximum allowable concentration in the air is 100 mg/m3. Appearance and properties: Colorless gas with a slight odor characteristic of hydrocarbons. A small amount of ethylene has a mild sweet taste. Melting point (°C): -169.4 Boiling point (°C): -103.9 Density: 0.42 Relative vapor density (air = 1): 0.98 Saturated vapor pressure (kPa): 4083.40 (0°C) Heat of combustion (kJ/mol): 1411.0 Critical temperature (°C): 9.2 Critical pressure (MPa): 5.04 Ignition temperature (°C): 425 Upper explosion limit (%/V/V): 36.0 Lower explosion limit (%/V/V): 2.7