Cyclohexen

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Achtung

• Gefahrenhinweise

  H225：Flüssigkeit und Dampf leicht entzündbar.

  H302：Gesundheitsschädlich bei Verschlucken.

  H304：Kann bei Verschlucken und Eindringen in die Atemwege tödlich sein.

  H411：Giftig für Wasserorganismen, mit langfristiger Wirkung.

• Sicherheit

  P210：Von Hitze, heißen Oberflächen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.

  P233：Behälter dicht verschlossen halten.

  P240：Behälter und zu befüllende Anlage erden.

  P273：Freisetzung in die Umwelt vermeiden.

  P301+P310：BEI VERSCHLUCKEN: Sofort GIFTINFORMATIONSZENTRUM/Arzt/... (geeignete Stelle für medizinische Notfallversorgung vom Hersteller/Lieferanten anzugeben) anrufen.

  P331：KEIN Erbrechen herbeiführen.

Cyclohexene Chemische Eigenschaften,Einsatz,Produktion Methoden

• ERSCHEINUNGSBILD

  FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.

• PHYSIKALISCHE GEFAHREN

  Die Dämpfe sind schwerer als Luft und können sich am Boden ausbreiten. Fernzündung möglich. Fließen, Schütten o.ä. kann zu elektrostatischer Aufladung führen.

• CHEMISCHE GEFAHREN

  Bildung explosionsfähiger Peroxide. Kann polymerisieren unter bestimmten Bedingungen.

• ARBEITSPLATZGRENZWERTE

  TLV: 300 ppm (ACGIH 2005).
  MAK: IIb (MAK nicht festgelegt, aber Informationen vorhanden) (DFG 2008).
  

• AUFNAHMEWEGE

  Aufnahme in den Körper durch Inhalation und durch Verschlucken.

• INHALATIONSGEFAHREN

  Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.

• WIRKUNGEN BEI KURZZEITEXPOSITION

  WIRKUNGEN BEI KURZZEITEXPOSITION:
  Die Substanz reizt die Augen, die Haut und die Atemwege. Verschlucken kann zur Aufnahme in der Lunge führen; Gefahr der Aspirationspneumonie. Möglich sind Auswirkungen auf das Zentralnervensystem.

• WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

  Die Flüssigkeit entfettet die Haut.

• LECKAGE

  Zündquellen entfernen. Ausgelaufene Flüssigkeit möglichst in abdichtbaren Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. NICHT in die Kanalisation spülen. Atemschutzfilter für organische Gase und Dämpfe.

• R-Sätze Betriebsanweisung:

  R11:Leichtentzündlich.
  R21/22:Gesundheitsschädlich bei Berührung mit der Haut und beim Verschlucken.
  R65:Gesundheitsschädlich: kann beim Verschlucken Lungenschäden verursachen.

• S-Sätze Betriebsanweisung:

  S16:Von Zündquellen fernhalten - Nicht rauchen.
  S29:Nicht in die Kanalisation gelangen lassen.
  S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
  S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.

• Aussehen Eigenschaften

  C6H10; 1,2,3,4-Tetrahydrobenzol. Stabilisiert mit 100 ppm 2-tert-Butyl-4-methylphenol. Farblose, flüchtige, wasserunlösliche Flüssigkeit mit charakteristischem Geruch.

• Gefahren für Mensch und Umwelt

  Leichtentzündlich. Dämpfe schwerer als Luft und bilden mit Luft explosionsfähige Gemische. Bei Kontakt mit Oxidationsmitteln sind heftige Reaktionen bis zur Entzündung möglich.
  Gesundheitsschädlich beim Verschlucken. Etwas narkotische Wirkung und lokale Reizwirkung.
  LD₅₀ (oral, Ratte): 1940 mg/kg.

• Schutzmaßnahmen und Verhaltensregeln

  Maßnahmen gegen elektrostatische Aufladungen treffen.
  Schutzhandschuhe als kurzzeitiger Spritzschutz.

• Verhalten im Gefahrfall

  Mit flüssigkeitsbindendem Material z.B. Rench Rapid aufnehmen. Der Entsorgung zuführen.
  Kohlendioxid, Pulver.
  Ungeeignetes Löschmittel: Wasser.
  Mit Luft Bildung explosionsfähiger Gemische möglich.

• Erste Hilfe

  Nach Hautkontakt: Sofort mit viel Wasser abwaschen.
  Nach Augenkontakt: Mit reichlich Wasser bei geöffnetem Lidspalt mindestens 10 Minuten ausspülen. Augenarzt hinzuziehen.
  Nach Einatmen: Frischluft.
  Nach Verschlucken: Viel Wasser trinken lassen. Erbrechen auslösen. Arzt hinzuziehen.
  Nach Kleidungskontakt: Kontaminierte Kleidung sofort entfernen.
  Ersthelfer: siehe gesonderten Anschlag

• Sachgerechte Entsorgung

  Als halogenfreie, organische Lösemittelabfälle.

• Beschreibung

  Cyclohexene is a hydrocarbon, mostly obtained from the hydrogenation of benzene.

• Chemische Eigenschaften

  Cyclohexene is a colorless liquid (cyclic alkene) with a sweetish odor.

• Physikalische Eigenschaften

  Clear, colorless liquid with a sweet odor. Odor threshold concentration is 0.18 ppm (quoted, Amoore and Hautala, 1983).

• Verwenden

  It occurs in coal tar and is obtained by catalyticdehydration of cyclohexanol and dehydrogenationof cyclohexane. Cyclohexene isused in making adipic acid, maleic acid,and butadiene; in oil extraction; as a stabilizerfor high-octane gasoline; and in organicsynthesis.

• Verwenden

  Manufacture of adipic acid, maleic acid, hexahydrobenzoic acid, and aldehyde; stabilizer for high-octane gasoline

• Verwenden

  Alkylation component. In the manufacture of adipic acid, maleic acid, hexahydrobenzoic acid and aldehyde. To prepare butadiene in the laboratory. Has been suggested for the synthesis of maleic acid and as stabilizer for high octane gasoline.

• Vorbereitung Methode

  Cyclohexene is prepared by dehydration of cyclohexanol by thermal reaction of an ethylene–propylene–butadiene mixture (1).

• Definition

  ChEBI: A cycloalkene that is cylohexane with a single double bond.

• Allgemeine Beschreibung

  A colorless liquid. Insoluble in water and less dense than water. Flash point 20°F. Vapors heavier than air. Inhalation of high concentrations may have a narcotic effect. Used to make other chemicals.

• Air & Water Reaktionen

  Highly flammable. Insoluble in water.

• Reaktivität anzeigen

  Cyclohexene may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions. Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick, 1979 p.151-154].

• Health Hazard

  There are very few toxicological data availableon cyclohexene. Inhalation producesirritation of the eyes and respiratory tract. Itis also an irritant to skin. Its acute toxicityis low; the toxic effects are similar to thoseof cyclohexane. Exposure to high concentrationsor ingestion may cause drowsiness.Single exposures to 15,000 ppm of cyclohexenecould be lethal to rats.

• Brandgefahr

  HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

• Sicherheitsprofil

  Moderately toxic by inhalation and ingestion. A very dangerous fire hazard when exposed to flame; can react with oxidizers. Dangerous; keep away fromheat and open flame. To fight fire, use foam, CO2, dry chemical.

• mögliche Exposition

  May be used as an intermediate in making other chemicals (e.g., adipic acid, maleic acid, hex- ahydro benzoic acid), oil extraction and as a catalyst solvent.

• Erste Hilfe

  If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Do NOT induce vomiting.

• Carcinogenicity

  Cyclohexene was not mutagenic in Salmonella typhimurium with or without metabolic activation.

• Environmental Fate

  Biological. Cyclohexene biodegrades to cyclohexanone (Dugan, 1972; Verschueren, 1983).
  Photolytic. The following rate constants were reported for the reaction of cyclohexene with OH radicals in the atmosphere: 6.80 x 10^-11 cm³/molecule?sec (Atkinson et al., 1979), 6.75 x 10^-11 cm³/molecule?sec at 298 K (Sablji? and Güsten, 1990), 5.40 x 10^-11 cm³/molecule?sec at 298 K (Rogers, 1989), 1.0 x 10^-10 cm³/molecule?sec at 298 K (Atkinson, 1990); with ozone in the gasphase: 1.69 x 10^-16 cm³/molecule?sec at 298 K (Japar et al., 1974), 2.0 x 10^-16 at 294 K (Adeniji et al., 1981), 1.04 x 10^-16 cm³/molecule?sec (Atkinson et al., 1983), 1.04 x 10^-16 at 298 K (Atkinson and Carter, 1984); with NO3 in the atmosphere: 5.26 x 10^-13 cm³/molecule?sec (Sablji? and Güsten, 1990); 5.3 x 10^-13 cm³/molecule?sec at 298 K (Atkinson, 1990), and 5.28 x 10^-13 cm³/molecule?sec at 295 K (Atkinson, 1991). Cox et al. (1980) reported a rate constant of 6.2 x 10^-11 cm³/molecule?sec for the reaction of gaseous cyclohexene with OH radicals based on a value of 8 x 10^-12 cm³/molecule?sec for the reaction of ethylene with OH radicals.
  Chemical/Physical. Gaseous products formed from the reaction of cyclohexene with ozone were (% yield): formic acid , carbon monoxide , carbon dioxide, ethylene, and valeraldehyde (Hatakeyama et al., 1987). In a smog chamber experiment conducted in the dark at 25 °C, cyclohexane reacted with ozone. The following products and their respective molar yields were: oxalic acid (6.16%), malonic acid (6.88%), succinic acid (0.63%), glutaric acid (5.89%), adipic acid (2.20%), 4-hydroxybutanal (2.60%), hydroxypentanoic acid (1.02%), hydroxyglutaric acid (2.33%), hydroxyadipic acid (1.19%), 4-oxobutanoic acid (6.90%), 4- oxopentanoic acid (4.52%), 6-oxohexanoic acid (4.16%), 1,4-butandial (0.53%), 1,5-pentanedial (0.44%), 1,6-hexanedial (1.64%), and pentanal (17.05%).
  Grosjean et al. (1996) investigated the atmospheric chemistry of cyclohexene with ozone and an ozone-nitrogen oxide mixture under ambient conditions. The reaction of cyclohexene and ozone in the dark yielded pentanal and cyclohexanone. The sunlight irradiation of cyclohexene with ozonenitrogen oxide yielded the following carbonyls: formaldehyde, acetaldehyde, acetone, propanal, butanal, pentanal, and a C₄ carbonyl.
  Cyclohexene reacts with chlorine dioxide in water forming 2-cyclohexen-1-one (Rav-Acha et al., 1987).

• Lager

  Color Code—Red: Flammability Hazard: Store ina flammable liquid storage area or approved cabinet awayfrom ignition sources and corrosive and reactive materials.May form peroxides in storage. Prior to working with thischemical you should be trained on its proper handling andstorage. Before entering confined space where this chemicalmay be present, check to make sure that an explosive concentration does not exist. Cumene must be stored to avoidcontact with oxidizers, such as permanganates, nitrites, peroxides, chlorates, and perchlorates, since violent reactionsoccur. Store in tightly closed containers in a cool well-ventilated area away from heat. Sources of ignition, such assmoking and open flames, are prohibited where Cumene isused, handled, or stored in a manner that could create apotential fire or explosion hazard. Metal containers involving the transfer of=gallons or more of this chemical shouldbe grounded and bonded. Drums must be equipped withself-closing valves, pressure vacuum bungs, and flamearresters. Use only nonsparking tools and equipment, especially when opening and closing containers of thischemical.chemical you should be trained on its proper handling andstorage. Before entering confined space where this chemicalmay be present, check to make sure that an explosive concentration does not exist. Store in tightly closed containersin a cool, well-ventilated area away from strong oxidizers(such as chlorine, bromine, and fluorine). Sources of ignition, such as smoking and open flames, are prohibitedwhere cyclohexene is handled, used, or stored. Metal containers involving the transfer of=gallons or more of cyclohexene should be grounded and bonded. Drums must beequipped with self-closing valves, pressure vacuum bungs,and flame arresters. Use only nonsparking tools and equipment, especially when opening and closing containers ofcyclohexene. Wherever cyclohexene is used, handled, manufactured, or stored, use explosion-proof electrical equipment and fittings.

• Versand/Shipping

  UN2256 Cyclohexene, Hazard Class: 3; Labels: 3-Flammable liquid.

• läuterung methode

  Free cyclohexene from peroxides by washing with successive portions of dilute acidified ferrous sulfate, or with NaHSO3 solution, then with distilled water, drying with CaCl2 or CaSO4, and distilling under N2. Alternative methods for removing peroxides include passage through a column of alumina, refluxing with sodium wire or cupric stearate (then distilling from sodium). The diene is removed by refluxing with maleic anhydride before distilling under vacuum. Treatment with 0.1moles of MeMgI in 40mL of diethyl ether removes traces of oxygenated impurities. Other purification procedures include washing with aqueous NaOH, drying and distilling under N2 through a spinning band column, redistilling from CaH2, storing under sodium wire, and passing through a column of alumina, under N2, immediately before use. Store it at <0o under argon. [Coleman & Johnstone Org Synth Coll Vol I 83 1955, Carson & Ipatieff Org Synth Coll Vol II 152 1943, Woon et al. J Am Chem Soc 108 7990 1986, Wong et al. J Am Chem Soc 109 3428 1987.] [Beilstein 5 IV 218.]

• Toxicity evaluation

  The release of cyclohexene into the air occurs in the form of waste streams from manufacturing units. Cyclohexene has a vapor pressure of 89mm Hg at 25°C, indicating that it exists as a vapor form in the environment and is degraded by reactions with photochemically induced hydroxyl radicals, ozone, and nitrate radicals. The half-life for these reactions in the air is 6, 2, and 4 h, respectively.
  Estimated Koc of 850 indicates that cyclohexene has low mobility in the soil. Cyclohexene has Henry’s law constant of 4.55×10^-2atm-m³ mol^-1. Based on this Henry’s law constant, volatilization is expected to be the major process of removal of cyclohexene from moist soil and water, if released into it.

• Inkompatibilitäten

  Vapor may form explosive mixture with air. The substance can form explosive peroxides. The sub- stance may polymerize under certain conditions. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoa- cids, epoxides.

• Waste disposal

  Dissolve or mix the material with a combustible solvent and burn in a chemical incinera- tor equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

Cyclohexene Upstream-Materialien And Downstream Produkte

Cyclohexen Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global(323)Suppliers

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