CAS number: 74-84-0
UN number: 1035
EINECS number: 200-814-8
Molecular weight: 30.07
Appearance: colorless and odorless
Melting point: -172 ℃
Boiling point: -88.6 ℃
Density: 1.356 kg/m³
DOT class: 2.1
Label: flammable gas
Packaging specifications
| Cylinder specifications | Content | |
| Cylinder capacity | Valve | Weight |
| 40L | CGA350 | 12kg |
| 50L | CGA350 | 16kg |
Industrial grade ethane 99.5%
| Specifications | 99.5% |
| Methane | ≤0.5 % |
| Ethylene | ≤0.1 % |
| Propane | ≤0.01 % |
| Cyclopropane | ≤0.01 % |
| Isobutane | ≤0.05 % |
| N-butane | ≤0.05 % |
| Butene | ≤0.01 % |
| Isobutylene | ≤0.01 % |
| C5+ | ≤200 ppm |
| Total sulfur | ≤1 ppm |
| Carbon dioxide | ≤20 ppm |
| Carbon monoxide | ≤2 ppm |
| Water | ≤15 ppm |
Electronic grade ethane 99.999%
| Specifications | 99.999% |
| Oxygen + Argon | ≤ 0.07ppm |
| Nitrogen | ≤ 2 ppm |
| Carbon dioxide | ≤ 0.28 ppm |
| Methane | – |
| Ethylene | – |
| Propane | – |
| Propylene | – |
| Water | ≤ 1.8ppm |
Gas introduction
Ethane (ethane) is the second member of the alkane series and is the simplest hydrocarbon containing a carbon-carbon single bond. Its structural formula is CH3CH3. The content of ethane in some natural gases is 5% to 10%, second only to methane.
This product exists in petroleum gas, natural gas, coke oven gas and petroleum cracking gas, and is obtained by separation. (1) Separation from oilfield gas In addition to methane, oilfield gas or natural gas also contains a small amount of ethane, propane or other hydrocarbons with more carbon atoms. The content in natural gas is about 5% to 10%, second only to methane. Ethane can be obtained by separation. The liquid obtained by deep cold separation of natural gas is a light hydrocarbon mixture with ethane, propane and butane as the main components. Its composition is related to the source of natural gas and the separation processing temperature and pressure conditions. The typical composition (P) is: ethane 37.6%, propane 35.9%, butane 11.6%, isobutane 3.9%, n-pentane 3.1%, and others 7.9%. (2) Separation from refinery gas In addition to methane, the petroleum processing gas of each refinery also contains ethane, propane, and C4 and C5 hydrocarbons, etc. Ethane can be obtained by separation. (3) Separation from cracking gas Ethane can be separated by cryogenic method.
