2-Methylbut-2-en Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R11:Leichtentzündlich.
R22:Gesundheitssch?dlich beim Verschlucken.
R65:Gesundheitssch?dlich: kann beim Verschlucken Lungensch?den verursachen.
R51/53:Giftig für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
R12:Hochentzündlich.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R19:Kann explosionsf?hige Peroxide bilden.
S-S?tze Betriebsanweisung:
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S9:Beh?lter an einem gut gelüfteten Ort aufbewahren.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
S33:Ma?nahmen gegen elektrostatische Aufladungen treffen.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Beschreibung
2-Methyl-2-butene (also named as Amylene) is an alkene hydrocarbon with the molecular formula C5H10. It is a colorless to pale yellow clear liquid. It can be used as a free radical scavenger in trichloromethane and dichloromethane. It was used for the alkylation of 3-methylthiophene over a zeolitic catalyst. It was also used as a precursor of peroxyacetyl nitrate for calibration purpose.
Chemische Eigenschaften
2-Methyl-2-butene is a colorless volatile liquid with unpleasant odour (detection limit ca. 2 ppt) . soluble in alcohol, ether, benzene, insoluble in water. It is used in organic synthesis, hydrogenation, halogenation, alkylation, condensation reactions.
Verwenden
2-Methyl-2-butene is used to prepare 3-Brom-2.3-dimethyl-1.1-dicyan-butan in the presence of 2,2'-azobis-(2,4-dimethyl-4-methoxyvaleronitrile) as a catalyst. It may be employed as precursor for peroxyacetyl nitrate for the calibration purposes.
Definition
ChEBI: 2-Methyl-2-butene is an alkene that is ethylene in which three of the hydrogens are replaced by methyl groups.
synthetische
2-methyl-2-butene is prepared by dehydration of tert-amyl alcohol in presence of p-toluenesulfonic acid or distillation of a catalytically cracked gasoline stream, followed by extraction with aqueous sulfuric acid at low temp.
Allgemeine Beschreibung
2-methyl-2-butene appears as a clear colorless liquid with a petroleum-like odor. Less dense than water and insoluble in water. Hence floats on water. Vapors heavier than air.
Air & Water Reaktionen
Highly flammable. Insoluble in water.
Reaktivit?t anzeigen
2-Methyl-2-butene may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release gaseous hydrogen. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic polymerization reactions.
Hazard
Highly flammable, dangerous fire and
explosion risk.
Health Hazard
Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
l?uterung methode
Distil amylene and collect the distillate at low temperature. It has also been distilled from sodium. FLAMMABLE. It is available in steel cylinders and has a short
2-Methylbut-2-en Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
β,β-Carotin
N,N-Dimethylmethylenammoniumiodid
1-(4-Chlorphenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butanon
pinacolone，tert-butyl methy1 ketone，3，3-dimethyl-2-butyl ketone
2,2-Dimethylbuttersure
3,4-Dimethylpent-2-en
3,4,4-TRIMETHYLCYCLOPENT-2-ENONE
1,1,2,3,3-Pentamethylindan
3-Ethylpent-2-en
2-Methylpent-2-en
2-Methylbutan-2-thiol
