ETHYLENE
- CAS No.
- 74-85-1
- Chemical Name:
- ETHYLENE
- Synonyms
- C2H4;Ethen;R1150;Ethylen;etileno;Elayl;R-1150;Athylen;Acetene;ETHYLENE
- CBNumber:
- CB1441446
- Molecular Formula:
- C2H4
- Molecular Weight:
- 28.05
- MOL File:
- 74-85-1.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/3/14 15:18:25
| 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 |
| form | Colorless gas |
| explosive limit | 36% |
| Water Solubility | 90.91g/L(25 ºC) |
| FreezingPoint | -169.4℃ |
| Merck | 13,3825 |
| BRN | 1730731 |
| Stability | Stable. Highly flammable - note wide explosion limits. Incompatible with strong oxidizing agents. Readily forms explosive mixtures with air. |
| CAS DataBase Reference | 74-85-1(CAS DataBase Reference) |
| IARC | 3 (Vol. Sup 7, 60) 1994 |
| NIST Chemistry Reference | Ethylene(74-85-1) |
| EPA Substance Registry System | Ethylene (74-85-1) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS02,GHS04,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H220-H280-H336 | |||||||||
| Precautionary statements | P261-P271-P304+P340+P312-P403+P233-P405-P410+P403 | |||||||||
| Hazard Codes | F+,F | |||||||||
| Risk Statements | 12-67 | |||||||||
| Safety Statements | 9-16-33-46-45 | |||||||||
| RIDADR | UN 1962 2.1 | |||||||||
| WGK Germany | - | |||||||||
| RTECS | KU5340000 | |||||||||
| F | 4.5-31 | |||||||||
| Autoignition Temperature | 842 °F | |||||||||
| DOT Classification | 2.1 (Flammable gas) | |||||||||
| HazardClass | 2.1 | |||||||||
| HS Code | 29012100 | |||||||||
| Toxicity | LC for mice in air: 950,000 ppm (Flury) | |||||||||
| NFPA 704 |
|
ETHYLENE price More Price(3)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 536164 | Ethylene 99.99% | 74-85-1 | 110G | ₹51200.33 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 03484 | Ethylene ≥99.9% | 74-85-1 | 3.2KG | ₹101260.13 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 03482 | Ethylene purum, ≥99.9% | 74-85-1 | 700G | ₹36281.03 | 2022-06-14 | Buy |
ETHYLENE Chemical Properties,Uses,Production
Description
Ethylene is a colorless, odorless gas that is the simplest alkene hydrocarbon. It is a natural plant hormone and is produced synthetically from natural gas and petroleum. The double bond in ethylene makes this compound highly reactive, and the volume of ethylene used in the chemical industry is greater than any other organic compound.
Chemical Properties
Ethylene, an alkene is a colorless gas (at room temperature). Sweet odor. Minimum detectable odor 5 260 ppm.
Uses
Oxyethylene welding and cutting metals; manufacture of alcohol, mustard gas, and many other organics. manufacture of ethylene oxide (for plastics), "Polythene", polystyrene and other plastics. Plant growth regulator; used commercially to accelerate the ripening of various fruits.
Production Methods
Ethylene is primarily obtained from the ethane and propane components of natural gas andfrom the naphtha, kerosene, and gas oil components of crude oil. It can also be synthesizedthrough the dehydration of ethanol (C2H5OH). The production of ethylene from hydrocarbonfeedstocks involves mixing with steam and then subjecting the hydrocarbons to thermalor catalytic cracking. Cracking is a process in which organic molecules are broken down intosmaller molecules. Thermal cracking involves the use of heat and pressure. Catalytic crackinguses various catalysts to reduce the amount of heat and pressure required in the process.Th ermal cracking of hydrocarbons to ethylene occurs between approximately 650°C and800°C (1200°F and 1500°F). After hydrocarbons are cracked, a mixture containing ethyleneand other gases such as methane, ethane, and propane is obtained. Ethylene is separated fromthese through physical processes such as fractional distillation, refrigeration, absorption, oradsorption.
Definition
ethylene: A colourlessflammable gaseous hydrocarbon,C2H4; m.p. –169°C; b.p. –103.7°C. It isthe first member of the alkene seriesof hydrocarbons. It is made bycracking hydrocarbons from petroleumand is now a major raw materialfor making other organicchemicals (e.g. ethanal, ethanol,ethane-1,2-diol). It can be polymerizedto polyethene. It occurs naturallyin plants, in which it acts as agrowth substance promoting theripening of fruits.
Reactions
Ethylene reacts: (1) with the halogens to form substitution halides; (2) with hypochlorous and hypobromous acid to form ethylene chlorohydrin or ethylene bromohydrin, respectively; (3) with hydrogen iodide or bromide (not chloride) to form ethyl iodide or ethyl bromide; (4) with hydrogen, in the presence of a catalyst, e.g., finely divided nickel at 150 °C, to form ethane; (5) with concentrated sulfuric acid at 160 °C to form ethyl hydrogen sulfate; and (6) with potassium permanganate to form ethylene glycol, although glycol is preferably made from ethylene dichloride or chlorohydrin.
General Description
A colorless gas with a sweet odor and taste. ETHYLENE is lighter than air. ETHYLENE is easily ignited and a flame can easily flash back to the source of the leak. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. Can cause explosion.
Air & Water Reactions
Highly flammable.
Reactivity Profile
Peroxidizable monomer may initiate exothermic polymerization of the bulk material [Bretherick 1979. p. 160]. ETHYLENE in the presence of aluminum chloride may undergo a violent reaction [J. Inst. Pet. 33:254. 1947]. Ozone and ETHYLENE react explosively [Berichte 38:3837]. ETHYLENE can polymerize at low pressure if catalyzed by titanium halides. (Sundaram, K. M, M. M. Shreehan, E. F. Olszewski. thylene. Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley & Sons, Inc. 2001.)
Hazard
Highly flammable, dangerous fire and explosion risk; explosive limits in air 3–36% by volume. Simple asphyxiant; questionable carcinogen.
Health Hazard
Exposure to ethylene atmosphere can causeasphyxiation. At high concentrations it is anarcotic and can cause unconsciousness.
Fire Hazard
Flammable gas; burns with a luminous flame;
autoignition temperature 490°C (914°F)
(NFPA 1997), 543°C (1009°F) (Merck
1996); fire-extinguishing measure: shut off
the flow of gas; use a water spray to keep
fire-exposed containers cool.
Ethylene forms explosive mixtures in
air; the LEL and UEL values are 2.7%
and 36% by volume of air, respectively.
Its reaction with fluorine is explosively
violent (△H=- 112 kcal/mol), and violent
with chlorine (△H=- 36 kcal/mol). In the
presence of sunlight or UV light, an ethylene–
chlorine mixture will explode spontaneously.
The reaction is explosive at room
temperature over the oxides of mercury or
silver (Mellor 1946, Suppl. 1956). Ethylene
reacts vigorously with oxidizing substances.
It reacts with ozone to form ethylene
ozonide, H2C(O3)CH2, which is unstable
and explodes on mechanical shock. Acidcatalyzed
addition of hydrogen peroxide
may produce ethyl hydroperoxide, which is
unstable and explodes on heat or shock:.
Materials Uses
Installations must be designed to withstand the pressures involved and must comply with all applicable regulations. Because it is noncorrosive, any common commercially available metals may be used with ethylene.
Safety Profile
Suspected carcinogen. A simple asphyxiant. High concentrations cause anesthesia. A common air contaminant. It is phytotoxic. A very dangerous fire hazard when exposed to heat or flame. Moderate explosion hazard when exposed to flame. A flammable gas. To figh fire, stop flow of gas, use Co2, dry chemical, or fine water spray. Mixtures with aluminum chloride explode in the presence of nickel catalysts, methyl chloride, or nitromethane. Explosive reaction with bromotrichloromethane (at 120℃/51 bar), carbon tetrachloride (25-100°C/30 bar). Explosive reaction with chlorine catalyzed by sunlight or UV light or in the presence of mercury(I) oxide, mercury(Ⅱ) oxide, or silver oxide. Mixtures with chlorotrifluoroethylene polymerize explosively when exposed to 50 kV gamma rays at 308 krad/hr. Has been involved in industrial accidents. Violent polymerization is catalyzed by copper above 4OO0C/54 bar. Incompatible with AlCl3, (CC4 + benzoyl peroxide), (bromotrichloromethane + NCh), 03, CCl4, Cl2, NOx, tetrafluoroethylene trifluorohypofluorite. When heated to decomposition it emits acrid smoke and irritating fumes
Potential Exposure
Ethylene is used in production of fabricated plastics, antifreeze; making fibers; to manufacture ethylene oxide, polyethylene for plastics, alcohol, mustard gas and other organics. It is used to accelerate ripening of fruit; as an anesthetic; and for oxyethylene welding and cutting of metals
Carcinogenicity
A case-control study of brain cancer among Texas petrochemical workers reported increased risks associated with exposure to multiple chemicals, including ethene. The findings were not statistically significant. The risks for ethene have not been shown to increase with increasing duration of employment. The observed increases could not be attributed to specific chemical exposures.
Environmental Fate
Emitted ethene is distributed primarily into the atmosphere and reacts with photochemically reactive hydroxyl radicals, ozone, and nitrate radicals, with half-lives ranging from 1.9, 6.5, and 190 days, respectively. Biodegradation in water occurs with half-lives in the range of 1–28 days, or under anaerobic conditions, 3–112 days. Bioaccumulation in aquatic organisms is not expected to occur, based on ethene’s high vapor pressure and log octanol/water partition coefficient.
storage
Ethylene is stored in a cool, well-ventilatedarea isolated from oxygen, chlorine, andflammable and oxidizing substances. It isprotected against lightning, statical electricity,heat, and physical damage. It is shippedin steel pressure cylinders and tank barges.
Shipping
UN1962 Ethylene, Hazard Class: 2.1; Labels: 2.1-Flammable gas; UN1038 Ethylene, refrigerated liquid (cryogenic liquid), Hazard Class: 2.1; Labels: 2.1- Flammable gas. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.
Purification Methods
Purify ethylene by passage through a series of towers containing molecular sieves or anhydrous CaSO4 or a cuprous ammonia solution, then conc H2SO4, followed by KOH pellets. Alternatively, it has been condensed in liquid nitrogen, with melting, freezing and pumping to remove air before passage through an activated charcoal trap, followed by a further condensation in liquid air. A sputtered sodium trap was used to remove oxygen. [Beilstein 1 IV 677.]
Incompatibilities
A highly flammable gas at room temperature. Contact with oxidizers may cause explosive polymerization and fire. May be spontaneously explosive in sunlight or ultraviolet light when mixed with chlorine. Reacts violently with mixtures of carbon tetrachloride and benzoyl peroxide; bromotrichloromethane; aluminum chloride and ozone. Incompatible with acids, halogens, nitrogen oxides; hydrogen bromide; aluminum chloride; chlorine dioxide; nitrogen dioxide. May accumulate static electrical charges, and may cause ignition of its vapors.
Waste Disposal
Return refillable compressed gas cylinders to supplier
ETHYLENE Preparation Products And Raw materials
Raw materials
Preparation Products
1of4
chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| BASF India Limited | +91-2262785600 +91-2262785600 | Maharashtra, India | 209 | 58 | Inquiry |
| Dorf Ketal Chemicals India Private Limited | +91-2242974777 +91-2242974777 | Maharashtra, India | 7 | 58 | Inquiry |
| Maharashtra Gas Co | +91-8097713800 +91-9833780675 | Maharashtra, India | 21 | 58 | Inquiry |
| Vadilal Chemicals Limited | +91-7948936937 +91-7203030735 | Gujarat, India | 39 | 58 | Inquiry |
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6351 | 58 | Inquiry |
| Maharashtra Gas Co. | 08046045932 | Mumbai, India | 5 | 58 | Inquiry |
| Kansal Industrial Gases | 07942556276 | Uttar Pradesh, India | 1 | 58 | Inquiry |
| Hindustan Gases And Welding | 08048954097 | Kolkata, India | 8 | 58 | Inquiry |
| Air Tech Solution | 08046050638 | Mumbai, India | 2 | 58 | Inquiry |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | China | 21675 | 55 | Inquiry |
Related articles
- What is the Lewis structure of Ethylene?
- The Lewis structure of ethylene indicates that there are one carbon-carbon double bond and four carbon-hydrogen single bonds.
- Nov 20，2023
74-85-1(ETHYLENE)Related Search:
1of4
chevron_right