Ethylene C2H4
CAS No.: 74-85-1
UN No.: 1962
EINECS No.: 200-815-3
Molecular weight: 28.06
Appearance: Colorless
Melting point: -169.4 ℃
Boiling point: -103.9 ℃
Density: 1.178 kg/m³
DOT Class: 2.1
Label: Flammable gas
Packaging specifications
| Cylinder specifications | Content | |
| Cylinder capacity | Valve | Weight |
| 40L | QF-30 / CGA350 | 10kg |
| 47L | CGA350 | 13kg |
| 50L | CGA350 | 16kg |
Industrial grade ethylene 99.95%
| Specifications | 99.95% |
| Methane + Ethane | ≤ 500 ppm |
| C3 & C3+ | ≤ 10 ppm |
| Carbon monoxide | ≤ 1 ppm |
| Carbon dioxide | ≤ 5 ppm |
| Hydrogen | ≤ 5 ppm |
| Oxygen | ≤ 2 ppm |
| Acetylene | ≤ 3 ppm |
| Sulfur | ≤ 1 mg/kg |
| Water | ≤ 5 ppm |
| Methanol | ≤ 5 mg/kg |
| Ethanol | ≤ 1 mg/kg |
Electronic grade ethylene 99.999%
| Specifications | 99.999% |
| Nitrogen | ≤ 1.5 ppmv |
| Oxygen + Argon | ≤ 0.3 ppmv |
| Carbon monoxide | ≤ 0.1 ppmv |
| Carbon dioxide | ≤ 0.1 ppmv |
| Acetylene | ≤ 0.2 ppmv |
| Water | ≤ 0.8 ppmv |
| Other hydrocarbons | ≤ 0.6 ppmv |
Gas Introduction
Ethylene (Ethylene), with a chemical formula of C2H4 and a molecular weight of 28.054. is an organic compound composed of two carbon atoms and four hydrogen atoms. The two carbon atoms are connected by a carbon-carbon double bond. Ethylene exists in certain tissues and organs of plants and is converted from methionine under sufficient oxygen supply conditions.
Ethylene is a basic chemical raw material for synthetic fibers, synthetic rubber, synthetic plastics (polyethylene and polyvinyl chloride), and synthetic ethanol (alcohol). It is also used to make vinyl chloride, styrene, ethylene oxide, acetic acid, acetaldehyde, and explosives. It can also be used as a ripening agent for fruits and vegetables. It is a proven plant hormone.
Ethylene is one of the world’s largest chemical products. The ethylene industry is the core of the petrochemical industry. Ethylene products account for more than 75% of petrochemical products and occupy an important position in the national economy. The world has used ethylene production as one of the important indicators to measure the level of development of a country’s petrochemical industry.
The physiological effects are: triple reaction, promoting fruit ripening, promoting leaf senescence, inducing adventitious roots and root hairs, breaking the dormancy of plant seeds and buds, inhibiting flowering of many plants (but inducing and promoting flowering of pineapples and plants of the same genus), and changing the direction of sexual differentiation of flowers in the early stages of flower development in plants with different sexes.
On October 27. 2017. the World Health Organization’s International Agency for Research on Cancer published a preliminary list of carcinogens for reference, and ethylene was included in the list of Class 3 carcinogens.
