DIMETHYL
Ethane
CAS: 74-84-0
Molecular Formula: C2H6
DIMETHYL - Names and Identifiers
| Name | Ethane |
| Synonyms | C2H6 Ethane UN1961 UN1035 Dimethyl Bimethyl HSDB 941 Methylmethane Ethyl hydride Ethane,high purity ethane,refrigeratedliquid Ethane, refrigerated liquid Ethane [UN1035] [Flammable gas] Ethane, refrigerated liquid [UN1961] [Flammable gas] |
| CAS | 74-84-0 |
| EINECS | 200-814-8 |
| InChI | InChI=1S/C2H6/c1-2/h1-2H3 |
DIMETHYL - Physico-chemical Properties
| Molecular Formula | C2H6 |
| Molar Mass | 30.07 |
| Density | 0.362g/mLat 20°C(lit.) |
| Melting Point | −172°C(lit.) |
| Boling Point | −88°C(lit.) |
| Flash Point | −211°F |
| Water Solubility | 60.4mg/L(25 ºC) |
| Vapor Presure | 37.95 atm ( 21.1 °C) |
| Vapor Density | 1.05 (vs air) |
| Appearance | gas |
| Merck | 13,3758 |
| BRN | 1730716 |
| pKa | 48(at 25℃) |
| Stability | Stable. Highly flammable. Readily forms explosive mixtures with air. Incompatible with strong oxidizing agents. |
| Explosive Limit | 13% |
| Refractive Index | 1.0047 |
| Use | Mainly used as standard gas for analytical instruments in petrochemical enterprises |
DIMETHYL - Risk and Safety
| Risk Codes | 12 - Extremely Flammable |
| Safety Description | S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S33 - Take precautionary measures against static discharges. |
| UN IDs | UN 1035 2.1 |
| WGK Germany | - |
| RTECS | KH3800000 |
| FLUKA BRAND F CODES | 4.5-31 |
| Hazard Note | Flammable |
| Hazard Class | 2.1 |
DIMETHYL - Nature
Open Data Verified Data
colorless, odorless, combustible gas. Relative density d2 1.0493 (Air -1) or density 1.3562g/L; Foundation (solution) o.446; mp - 172 ℃;bp-88 ℃; Critical temperature 32.2 ℃, critical pressure 4883. 9kPa, critical density 203. Kg/m3. Triple point -183 °c (0.10 MPa); Latent heat of evaporation 489 kJ/kg; Latent heat of fusion at triple point 95,. The relative density of the liquid is 0. 3771( 15.6 °c) at saturation pressure. In the air flammable limit of 3.0% ~ 12.4% (Volume), flash point -135 ℃. The chemical nature is less active, can be considered to be non-toxic.
Last Update：2024-01-02 23:10:35
DIMETHYL - Hair-making
Open Data Verified Data
high-purity ethane with a purity of more than 99. 99% was obtained from the crude ethane feed gas purified by the combination of high-temperature adsorption and adsorption-expansion desorption.
Last Update：2022-01-01 09:31:30
DIMETHYL - Use
Open Data Verified Data
In the chemical industry, metallurgy, electronics, petroleum and other industrial sectors and scientific research, aviation, atomic energy and other fields are widely used as standard gas, calibration gas, etching gas, online instrument standard gas, the evaluation gas of the catalyst, the preparation of some special mixtures and the study of some mechanisms.
Last Update：2022-01-01 09:31:31
DIMETHYL - Safety
Open Data Verified Data
ethane can be regarded as an asphyxiant. Human inhaled LC50: 1000 × 10_6. Ethane is a gas with anesthetic and asphyxiating effects. The ethane gas is mainly for its flammable and explosive nature to cause enough attention. The leakage gas can be checked with the active solution. Store in a cool and ventilated place, away from fire and heat sources, not with oxygen, chlorine or other oxidants or combustible gas cylinder storage. Cylinder filling coefficient is not greater than 0. 34kg/L.
Last Update：2022-01-01 09:31:31
DIMETHYL - Introduction
High purity ethane, also known as ethane, is a colorless and odorless liquid. The following is an introduction to the properties, uses, production methods, and safety information of high-purity ethane:
1. Nature:
-High purity ethane is a volatile non-polar organic compound.
-It has poor solubility with water and can dissolve in non-polar solvents such as ethanol and ether solvents.
-It is a flammable and explosive substance that can form a flammable mixture with oxygen.
2. Purpose:
-As a solvent, high-purity ethane can be used as a reaction solvent in chemical laboratories, such as extraction solvents and liquid chromatography analysis.
-In the fields of petroleum and chemical industry, it is used to extract alkanes from crude oil, such as butane, n-hexane, etc.
3. Preparation method:
-High purity ethane can be obtained through the hydrogenation reaction of acetylene. Acetylene and hydrogen undergo a hydrogenation reaction under the action of a catalyst to produce ethylene, which is then subjected to the hydrogenation reaction of ethylene to obtain ethane.
4. Safety information:
-High purity ethane is a flammable and explosive substance that must be stored away from open flames, high temperatures, and oxidants.
-Avoid prolonged exposure to high concentration air during use to prevent poisoning.
-It is necessary to pay attention to the use of appropriate personal protective equipment, such as gloves, glasses, and protective clothing.
-When handling high-purity ethane, avoid breathing its vapors or skin contact to prevent irritation and damage.
-If a leak occurs, appropriate emergency measures must be taken, such as emptying, removing the fire source, and using appropriate extinguishing agents to extinguish it. Timely remove leaks to reduce the risk of fire and explosion.
Attention: High purity ethane is a hazardous chemical that must be strictly operated in accordance with relevant safety regulations when used or handled.
Last Update：2024-06-11 13:05:25
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