Ethylen

ETHYLENE Struktur
74-85-1
CAS-Nr.
74-85-1
Bezeichnung:
Ethylen
Englisch Name:
ETHYLENE
Synonyma:
C2H4;Ethen;R1150;Ethylen;etileno;Elayl;R-1150;Athylen;Acetene;ETHYLENE
CBNumber:
CB1441446
Summenformel:
C2H4
Molgewicht:
28.05
MOL-Datei:
74-85-1.mol

Ethylen Eigenschaften

Schmelzpunkt:
−169 °C(lit.)
Siedepunkt:
−104 °C(lit.)
Dichte
0.00126
Dampfdichte
0.97 (vs air)
Dampfdruck
35.04 atm ( 20 °C)
Brechungsindex
1.363
Flammpunkt:
-100 °C
Aggregatzustand
Colorless gas
Explosionsgrenze
36%
Wasserlöslichkeit
90.91g/L(25 ºC)
FreezingPoint 
-169.4℃
Merck 
13,3825
BRN 
1730731
Stabilität:
Stable. Highly flammable - note wide explosion limits. Incompatible with strong oxidizing agents. Readily forms explosive mixtures with air.
CAS Datenbank
74-85-1(CAS DataBase Reference)
IARC
3 (Vol. Sup 7, 60) 1994
NIST chemische Informationen
Ethylene(74-85-1)
EPA chemische Informationen
Ethylene (74-85-1)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher F+,F
R-Sätze: 12-67
S-Sätze: 9-16-33-46-45
RIDADR  UN 1962 2.1
WGK Germany  -
RTECS-Nr. KU5340000
4.5-31
Selbstentzündungstemperatur 842 °F
DOT Classification 2.1 (Flammable gas)
HazardClass  2.1
HS Code  29012100
Giftige Stoffe Daten 74-85-1(Hazardous Substances Data)
Toxizität LC for mice in air: 950,000 ppm (Flury)
Bildanzeige (GHS) GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H220 Extrem entzündbares Gas. Entzündbare Gase Kategorie 1 Achtung P210, P377, P381, P403
H280 Enthält Gas unter Druck; kann bei Erwärmung explodieren. Gase unter Druck verflüssigtes Gas Warnung P410+P403
H336 Kann Schläfrigkeit und Benommenheit verursachen. Spezifische Zielorgan-Toxizität (einmalige Exposition) Kategorie 3 (Schläfrigkeit und Benommenheit) Warnung P261, P271, P304+P340, P312,P403+P233, P405, P501
Sicherheit
P261 Einatmen von Staub vermeiden.
P271 Nur im Freien oder in gut belüfteten Räumen verwenden.
P403+P233 An einem gut belüfteten Ort aufbewahren. Behälter dicht verschlossen halten.
P405 Unter Verschluss aufbewahren.
P410+P403 Vor Sonnenbestrahlung schützen. An einem gut belüfteten Ort aufbewahren.

Ethylen Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

FARBLOSES KOMPRIMIERTES GAS MIT CHARAKTERISTISCHEM GERUCH.

PHYSIKALISCHE GEFAHREN

Das Gas ist leichter als Luft. Fließen, Schütten o.ä. kann zu elektrostatischer Aufladung führen.

CHEMISCHE GEFAHREN

Kann polymerisieren unter Bildung aromatischer Verbindungen unter Einfluss von Temperaturen über 600°C. Reagiert mit starken Oxidationsmitteln unter Feuer- und Explosionsgefahr.

ARBEITSPLATZGRENZWERTE

TLV: 200 ppm (als TWA); Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); (ACGIH 2005).
MAK: Krebserzeugend Kategorie 3B; (DFG 2005).

AUFNAHMEWEGE

Aufnahme in den Körper durch Inhalation.

INHALATIONSGEFAHREN

Beim Entweichen aus dem Behälter kann das Gas die Luft verdrängen. Erstickungsgefahr in geschlossenen Räumen.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Exposition kann Bewusstseinstrübung verursachen.

LECKAGE

Gefahrenbereich verlassen! Belüftung. Zündquellen entfernen und Gaszufuhr unterbrechen, wenn möglich. Persönliche Schutzausrüstung: Chemikalienschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät.

R-Sätze Betriebsanweisung:

R12:Hochentzündlich.
R67:Dämpfe können Schläfrigkeit und Benommenheit verursachen.

S-Sätze Betriebsanweisung:

S9:Behälter an einem gut gelüfteten Ort aufbewahren.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
S46:Bei Verschlucken sofort ärztlichen Rat einholen und Verpackung oder Etikett vorzeigen.

Beschreibung

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.

Chemische Eigenschaften

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

Verwenden

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.

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.

Vorbereitung Methode

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.

Reaktionen

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.

Allgemeine Beschreibung

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 Reaktionen

Highly flammable.

Reaktivität anzeigen

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.

Brandgefahr

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.

Sicherheitsprofil

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

mögliche Exposition

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.

Lager

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.

Versand/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.

läuterung methode

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.]

Inkompatibilitäten

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

Ethylen Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Ethylen Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 93)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21975 55
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
linda@hubeijusheng.com CHINA 28185 58
Hubei xin bonus chemical co. LTD
86-13657291602
linda@hubeijusheng.com CHINA 22973 58
CONIER CHEM AND PHARMA LIMITED
+8618523575427
sales@conier.com China 47427 58
Shaanxi Dideu Medichem Co. Ltd
+86-029-87569262 +8615319740599
1007@dideu.com China 3981 58
SIMAGCHEM CORP
+86-13806087780 +86-13806087780
sale@simagchem.com China 17369 58
Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418671
sales@tnjchem.com CHINA 34572 58
Shaanxi Dideu Medichem Co. Ltd
+86-29-29-89586680 +8618192503167
1006@dideu.com China 9896 58
Henan Alfa Chemical Co., Ltd
+8618339805032
alfa4@alfachem.cn China 14276 58
Shaanxi Didu New Materials Co. Ltd
+86-89586680 +86-13289823923
1005@dideu.com China 9986 58

74-85-1(Ethylen)Verwandte Suche:


  • Ethylene ,99.99%
  • Ethylene,Ethene
  • Ethylene, 99+%
  • Ethylene puriss., >=99.95% (GC)
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  • Olefiant gas
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  • ETHYLENE ISO 9001:2015 REACH
  • C2H4
  • Ethen
  • Ethylen
  • etileno
  • R1150
  • 74-85-1
  • 1072-53-5
  • C2H3
  • CH2CH2
  • 74851
  • Pesticides & Metabolites
  • Pesticides
  • Plant growth regulators
  • Synthetic Reagents
  • Analytical Chromatography Product Catalog
  • Analytical Standards
  • Environmental Standards
  • Compressed and Liquefied Gases
  • Chromatography
  • Gas Standards
  • Mixtures
  • refrigerants
  • SCOTTY Gases
  • Chemical Synthesis
  • Specialty Gases
  • Synthetic Reagents
  • Analytical Standards
  • Analytical/Chromatography
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