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ETHYLENE

Uses Uses
Product Name
ETHYLENE
CAS No.
74-85-1
Chemical Name
ETHYLENE
Synonyms
C2H4;Elayl;Ethen;R1150;R-1150;Athylen;Acetene;Ethylen;etileno;ETHYLENE
CBNumber
CB1441446
Molecular Formula
C2H4
Formula Weight
28.05
MOL File
74-85-1.mol
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ETHYLENE Property

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)
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Safety

Hazard Codes 
F+,F
Risk Statements 
12-67
Safety Statements 
9-16-33-46-45
RIDADR 
UN 1962 2.1
WGK Germany 
-
RTECS 
KU5340000
4.5-31
Autoignition Temperature
842 °F
DOT Classification
2.1 (Flammable gas)
HazardClass 
2.1
HS Code 
29012100
Hazardous Substances Data
74-85-1(Hazardous Substances Data)
Toxicity
LC for mice in air: 950,000 ppm (Flury)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H220Extremely flammable gas

H280Contains gas under pressure; may explode if heated

H336May cause drowsiness or dizziness

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P377Leaking gas fire: Do not extinguish, unless leak can be stopped safely.

P381Eliminate all ignition sources if safe to do so.

P410+P403Protect from sunlight. Store in a well-ventilated place.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
295329
Product name
Ethylene
Purity
≥99.5%
Packaging
110g
Price
$383
Updated
2020/08/18
Sigma-Aldrich
Product number
536164
Product name
Ethylene
Purity
99.99%
Packaging
110g
Price
$383
Updated
2020/08/18
Sigma-Aldrich
Product number
00489
Product name
Ethylene
Purity
puriss., ≥99.95% (GC)
Packaging
11l
Price
$74.8
Updated
2020/08/18
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ETHYLENE Chemical Properties,Usage,Production

Uses

Chemical intermediate in the manufacture of polyethylene, ethylene oxide, ethylene dichloride, and ethyl benzene; used as a fruit and vegetable ripening agent

Uses

Ethylene finds use in the manufacture of ethyl benzene, ethanol, ethylene oxide, ethylene glycol, and ethylene dichloride. About half of the ethylene produced in the United States is used for the production of high- and low-density polyethylene plastics. Other chemical raw materials made with ethylene include ethyl chloride, dichloroethane, vinyl chloride, ethyl ether, methyl acrylate, and styrene.
Ethylene is also used as a refrigerant and a fuel for metal cutting and welding, and it has been used for anesthesia. It is also used to accelerate plant growth and fruit ripening.

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

colourless gas

Chemical Properties

Ethylene, an alkene is a colorless gas (at room temperature). Sweet odor. Minimum detectable odor 5 260 ppm.

Uses

Ethylene occurs in petroleum gases, in illuminatinggas, and in ripening fruits. It is made by dehydrating alcohol. It is used in oxyethyleneflame for welding and cutting metals; inthe manufacture of polyethylene, polystyrene,and other plastics; in making ethylene oxide;and as an inhalation anesthetic.

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.

Uses

Ethylene is highly reactive and is one of the most important compounds for the chemical industry. The highest use of ethylene is in polymerization reactions. Polyethylene polymers are linear, but they contain side branchings of methyl groups. Among these are several groups defi ned by their density produced under different pressure regimens.
The second highest use of ethylene involves oxidation to ethylene oxide and its derivative ethylene glycol (HO-CH2-CH2-OH). Ethylene glycol is used mainly as antifreeze and in the production of polyesters. Other important compounds produced through oxidation of ethylene are acetaldehyde (H3C-CH = O) and vinyl acetate (CH2 = CH-O-CO-CH2). Ethylene may also be halogenated to produce a number of other compounds.

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

Moderate concentration in air causes drowsiness, dizziness, and unconsciousness. Overexposure causes headache, drowsiness, muscular weakness.

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:.

Industrial uses

Ethylene, also called ethane, is a colorless,inflammable gas, CH2:CH2, produced in thecracking of petroleum. Ethylene liquefies at–68.2°C. Ethylene is the largest-volume organicchemical produced today, and is the basic buildingblock of the petrochemical industry. Polymerizationof ethylene is its largest use. Whenethylene is reacted in the presence of transitionmetal catalysts, such as Mo2O5 or Cr2O3, at highpressures, it forms low-density polyethylene(LDPE); at lower pressures, high-density polyethylene(HDPE) is produced. Recently, lowpressures have been employed for making a newvariant, linear low-density polyethylene(LLDPE). Ethylene is now used to produce ethylalcohol, acrylic acid, and styrene, and it is thebasis for many types of reactive chemicals.
Trichloroethylene is a colorless liquid ofpleasant odor of the composition CHCl:CCl2,also known as westrosol. Its boiling point is87°C and its specific gravity 1.471. It is insolublein water and is unattacked by dilute acidsand alkalis. It is non flammable and is less toxicthan tetrachlorethane. Trichloroethylene is apowerful solvent for fats, waxes, resins, rubber,and other organic substances, and is employedfor the extraction of oils and fats, for cleaningfabrics, and for degreasing metals preparatoryto plating. The freezing point is –88°C, and itis also used as a refrigerant. It is also used insoaps employed in the textile industry fordegreasing.

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

Physiological effects

When used for anesthesia, ethylene is a nontoxic gas found pleasant and nonirritating by patients. Prolonged inhalation of substantial concentrations results in unconsciousness; light and moderate anesthesia is attained, and deep anesthesia seldom occurs.
Inhalation is fatal only if the gas acts as a simple asphyxiant, depriving the body of necessary oxygen. Because of its flammability, however, other agents have replaced ethylene for use in anesthesia in the United States and Canada.
No deleterious action by ethylene on circulatory, respiratory, or other systems or organs has been observed. Exhalation eliminates the major portion of ethylene within minutes, although complete desaturation from body fat takes several hours. Minute traces can be detected in the blood a number of hours after anesthesia has ended.

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.

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

GRADES AVAILABLE

Ethylene is typically available for commercial and industrial purposes in a c.P. grade (minimum purity of 99.5 mole percent), and a technical grade (minimum purity of 98.1 mole percent).

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ETHYLENE Suppliers

Beijing dtftchem Technology Co., Ltd.
Tel
13651141086; 86(10)60275028、60275820
Fax
86 (10) 60270825
Email
dtftchem@sina.com
Country
China
ProdList
3393
Advantage
62
Energy Chemical
Tel
021-58432009
Fax
021-58436166-800
Email
sales8178@energy-chemical.com
Country
China
ProdList
44026
Advantage
61
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202- ;021-54308259-
Fax
+86-21-64545202
Email
info@hanhonggroup.com;info@hanhonggroup.com
Country
China
ProdList
43258
Advantage
64
Chengdu Ai Keda Chemical Technology Co., Ltd.
Tel
028-85911938-
Fax
028-86757656
Email
800078821@qq.com
Country
China
ProdList
9753
Advantage
55
Cheng Du Micxy Chemical Co.,Ltd
Tel
028-85632863-
Fax
028-85632863
Email
sales@micxy.com;
Country
China
ProdList
13070
Advantage
58
Quzhou Juhua Friendship Co., Ltd
Tel
0570-3066667,3062502
Fax
0570-3063388
Email
myqz1@126.com
Country
China
ProdList
3945
Advantage
58
Chengdu HuaXia Chemical Reagent Co. Ltd
Tel
400-1166-196;028-84555506- ;028-84555506-
Fax
QQ:800101999
Email
cdhxsj@163.com;cdhxsj@163.com;cdhxsj@163.com
Country
China
ProdList
9975
Advantage
58
Chengdu RunZeBenTu Chemical Co., Ltd
Tel
13096311329 028-88469284 qq:616445927
Fax
028-88469284
Email
616445927@qq.com
Country
China
ProdList
2893
Advantage
50
Chizhou Kailong Import and Export Trade Co., Ltd.
Tel
Please Email
Fax
-
Email
xg01_gj@163.com
Country
China
ProdList
9556
Advantage
50
Sigma-Aldrich
Tel
021-61415566- ;
Email
orderCN@merckgroup.com;orderCN@merckgroup.com
Country
China
ProdList
34885
Advantage
80
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View Lastest Price from ETHYLENE manufacturers

Shaanxi Dideu Medichem Co. Ltd
Product
Ethylene 74-85-1
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20T
Release date
2020-01-10

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