Methylcyclopentan Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R11:Leichtentzündlich.
R22:Gesundheitsschädlich beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R65:Gesundheitsschädlich: kann beim Verschlucken Lungenschäden verursachen.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S62:Bei Verschlucken kein Erbrechen herbeiführen. Sofort ärztlichen Rat einholen und Verpackung oder dieses Etikett vorzeigen.
Chemische Eigenschaften
Methylcyclopentane is a colorless, flammable liquid with a sweet gasoline-like odor. An odor threshold concentration of 1.7 ppmv was reported by Nagata and Takeuchi (1990). Soluble in ether, miscible with alcohol and benzene, insoluble in water.
Verwenden
Methylcyclopentane can undergo ring opening or ring enlargement to yield various hydrocarbons including branched and unbranched hexanes, cyclohexane and benzene.
Definition
ChEBI: Methylcyclopentane is a cycloalkane that is cyclopentane substituted by a single methyl group. It has a role as a human metabolite and a plant metabolite. It is a cycloalkane and a volatile organic compound. It derives from a hydride of a cyclopentane.
synthetische
Methylcyclopentane mainly exists in industrial hexane, accounting for about 5%. However, because its boiling point is close to that of n-hexane (68.74°C), it is difficult to completely separate it by general rectification methods. Therefore, methylcyclopentane with a purity of more than 99% can be obtained by azeotropic distillation with methanol.
Allgemeine Beschreibung
Methylcyclopentane appears as a colorless liquid. Insoluble in water and less dense than water. Flash point near 20 °F. Very dangerous fire risk. Vapors may be narcotic and irritating. Used to make other chemicals.
Air & Water Reaktionen
Highly flammable. Insoluble in water.
Reaktivität anzeigen
Methylcyclopentane can react vigorously with oxidizers. (NTP, 1992).
Hazard
Flammable, dangerous fire and explosionrisk. May be irritant and narcotic.
Health Hazard
Inhalation causes dizziness, nausea, and vomiting; concentrated vapor may cause unconsciousness and collapse. Liquid causes irritation of eyes and mild irritation of skin if allowed to remain. Ingestion causes irritation of stomach. Aspiration causes severe lung irritation, rapidly developing pulmonary edema, and central nervous system excitement followed by depression.
Brandgefahr
Behavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.
Sicherheitsprofil
Mildly toxic by
inhalation. Probably irritating and narcotic
in high concentration. Very dangerous fire
hazard when exposed to heat, flame, or
oxidizers. Can react vigorously with
oxidizing materials. To fight fire, use foam,
CO2, dry chemical. When heated to
decomposition it emits acrid smoke and
irritating fumes.
mögliche Exposition
This material is used as a solvent;
as a fuel; and in chemical synthesis.
Environmental Fate
Photolytic. A photooxidation rate constant of 7.0 x 10
-12 cm
3/moleculesec was reported for the
reaction of methylcyclopentane and OH radicals in the atmosphere (Atkinson, 1990).
Chemical/Physical. Complete combustion in air produces carbon dioxide and water vapor.
Methylcyclopentane will not hydrolyze because it does not contain a hydrolyzable functional
group.
At elevated temperatures, rupture of the ring occurs and 1-propene is produced in a 40% yield.
Other products include hydrogen and cyclic mono- and diolefins (Rice and Murphy, 1942).
Versand/Shipping
UN2298 Methyl cyclo pentane, Hazard Class: 3;
Labels: 3-Flammable liquid
läuterung methode
Purification procedures include passage through columns of silica gel (prepared by heating in nitrogen to 350o prior to use) and activated basic alumina, distillation from sodium-potassium alloy, and azeotropic distillation with MeOH, followed by washing out the methanol with water, drying and distilling. It can be stored with CaH2 or sodium. [Vogel J Chem Soc 1331 1938, Beilstein 5 III 55, 5 IV 84.]
Inkompatibilitäten
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, oxoacids, epoxides.
Waste disposal
Dissolve or mix the
material with a combustible solvent and burn in a chemical
incinerator equipped with an afterburner and scrubber.
All federal, state, and local environmental regulations
must be observed.
Methylcyclopentan Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
