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ETHYLENE

Uses Uses
ETHYLENE
ETHYLENE structure
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

ETHYLENE Properties

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)
FDA 21 CFR
175.105; 176.180
Indirect Additives used in Food Contact Substances
ETHYLENE
EWG's Food Scores
1
FDA UNII
91GW059KN7
NIST Chemistry Reference
Ethylene(74-85-1)
IARC
3 (Vol. Sup 7, 60) 1994
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  P210-P304+P340+P312-P377-P381-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
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
4
2 2

ETHYLENE price More Price(3)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 295329 Ethylene ≥99.5% 74-85-1 110g $383 2020-08-18 Buy
Sigma-Aldrich 536164 Ethylene 99.99% 74-85-1 110g $383 2020-08-18 Buy
Sigma-Aldrich 00489 Ethylene puriss., ≥99.95% (GC) 74-85-1 11l $74.8 2020-08-18 Buy

ETHYLENE Chemical Properties,Uses,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).

ETHYLENE Preparation Products And Raw materials

Raw materials

Preparation Products


ETHYLENE Suppliers

Global( 66)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21869 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22623 55
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28231 58
Zhonglan Industry Co., Ltd.
(86) 531-82956570
(86) 531-82956571 sales@zhonglanindustry.com CHINA 4895 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 linda@hubeijusheng.com CHINA 23041 58
CONIER CHEM AND PHARMA LIMITED
86-18523575427
sales@conier.com CHINA 47486 58
SIMAGCHEM CORP
13806087780 +86 13806087780
shaobowang@simagchem.com CHINA 17852 58
Mainchem Co., Ltd. +86-0592-6210733
+86-0592-6210733 sale@mainchem.com CHINA 32444 55
Beijing dtftchem Technology Co., Ltd. 13651141086
86 (10) 60270825 dtftchem@sina.com China 3393 62
Energy Chemical 400-005-6266 021-58432009
021-58436166-800 sales8178@energy-chemical.com China 44026 61

View Lastest Price from ETHYLENE manufacturers

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

ETHYLENE Spectrum


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