tert-Butylacetat

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Achtung

• Gefahrenhinweise

  H225：Flüssigkeit und Dampf leicht entzündbar.

• Sicherheit

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

tert-Butyl acetate 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.

• CHEMISCHE GEFAHREN

  Reagiert mit starken Säuren, starken Basen, starken Oxidationsmitteln einschließlichNitraten unter Feuer- und Explosionsgefahr. Greift Kunststoff an.

• ARBEITSPLATZGRENZWERTE

  TLV: 200 ppm (als TWA); (ACGIH 2005).
  MAK: 20 ppm; 96 mg/m? Spitzenbegrenzung: überschreitungsfaktor II(4); Schwangerschaft: Gruppe C; (DFG 2006).
  

• AUFNAHMEWEGE

  Aufnahme in den Körper durch Inhalation der Dämpfe.

• INHALATIONSGEFAHREN

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

• WIRKUNGEN BEI KURZZEITEXPOSITION

  WIRKUNGEN BEI KURZZEITEXPOSITION:
  Der Dampf reizt die Atemwege. Die Flüssigkeit reizt leicht die Augen und die Haut. Exposition weit oberhalb der Arbeitsplatzgrenzwerte kann Bewusstseinstrübung verursachen.

• WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

  Die Flüssigkeit entfettet die Haut.

• LECKAGE

  NICHT in die Kanalisation spülen. Ausgelaufene Flüssigkeit möglichst in abdichtbaren Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen.

• R-Sätze Betriebsanweisung:

  R11:Leichtentzündlich.
  R66:Wiederholter Kontakt kann zu spröder oder rissiger Haut führen.

• S-Sätze Betriebsanweisung:

  S16:Von Zündquellen fernhalten - Nicht rauchen.
  S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
  S25:Berührung mit den Augen vermeiden.
  S29:Nicht in die Kanalisation gelangen lassen.
  S33:Maßnahmen gegen elektrostatische Aufladungen treffen.

• Chemische Eigenschaften

  tert-Butyl acetate or t-butyl acetate is a colorless flammable liquid with a camphoror blueberry-like smell. It is used as a solvent in the production of lacquers, enamels, inks, adhesives, thinners, and industrial cleaners. It is also used as an additive to improve the antiknock properties of motor fuels. tert-Butyl acetate has three isomers: n-butyl acetate, isobutyl acetate, and sec-butyl acetate.

• Physikalische Eigenschaften

  Colorless liquid with a fruity odor. Odor threshold concentration in water is 4 ppm (CHRIS, 1994). Nagata and Takeuchi (1990) reported an odor threshold concentration of 71 ppb_v.

• Verwenden

  tert-Butyl acetate is common industrial solvent used in the making of lacquers, artificial leather, airplane dope, perfume, and as a food additive.

• Vorbereitung Methode

  tert-Butyl acetate is prepared from isobutylene reacting with acetic acid in the liquid phase with vanadium pentoxideimpregnated silica as the catalyst and with heat to increase the yield .

• Synthesis Reference(s)

  Organic Syntheses, Coll. Vol. 3, p. 142, 1955
  Synthesis, p. 1015, 1987
  Tetrahedron Letters, 37, p. 4555, 1996 DOI: 10.1016/0040-4039(96)00902-1

• Allgemeine Beschreibung

  Tert-butyl acetate is a colorless liquid with a mild odor. Floats on water. Produces irritating vapor. (USCG, 1999)

• Air & Water Reaktionen

  Highly flammable. Insoluble in water.

• Reaktivität anzeigen

  tert-Butyl acetate is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. tert-Butyl acetate is incompatible with the following: Nitrates; strong oxidizers, alkalis & acids .

• Hazard

  Flammable, moderate fire risk. Eye and upper respiratory tract irritant.

• Health Hazard

  Exposure to tert-butyl acetate causes eye, skin, and respiratory irritation in workers. By analogy with the effects of exposure to similar esters, tert-butyl acetate may act as a CNS depressant at high concentrations. The signs and symptoms of acute exposure to tert-butyl acetate include, but are not limited to, itchy or inflamed eyes and irritation of the nose and upper respiratory tract. Exposures to tert-butyl acetate at high concentrations may cause headache, drowsiness, and other narcotic effects.

• Sicherheitsprofil

  Poison by inhalation and ingestion. Flammable. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.

• mögliche Exposition

  n-Butyl acetate is an important solvent in the production of lacquers, leather and airplane dopes, and perfumes. It is used as a solvent and gasoline additive. sec-Butyl acetate is used as a widely used solvent for nitrocellulose, nail enamels and many different purposes. tert-Butyl acetate is common industrial solvent used in the making of lacquers, artificial leather, airplane dope, perfume; and as a food additive. Isobutyl acetate is used as a solvent and in perfumes and artificial flavoring materials

• Environmental Fate

  Chemical/Physical. Hydrolyzes in water to tert-butyl alcohol and acetic acid. The estimated hydrolysis half-life at 25 °C and pH 7 is 140 yr (Mabey and Mill, 1978).

• Lager

  tert-Butyl acetate should be stored in a cool, dry, well-ventilated area in tightly sealed containers that are labeled in accordance with regulatory standards. Containers of tert butyl acetate should be protected from physical damage and should be stored separately from nitrates, strong oxidizers, strong acids, strong alkalis, heat, sparks, and open flame. Because containers that formerly contained tert-butyl acetate may still hold product resi dues, they should be handled appropriately

• Versand/Shipping

  UN1123 Butyl acetates, Hazard Class: 3; Labels: 3—Flammable liquid.

• läuterung methode

  Wash the ester with 5% Na2CO3 solution, then saturated aqueous CaCl2, dry with CaSO4 and distil it. [McClosky et al. Org Synth Coll Vol IV 263 1963, Mangia et al. Org Prep Proc Int 18 13 1986, Beilstein 2 IV 151.]

• Inkompatibilitäten

  All butyl acetates are incompatible with nitrates, strong oxidizers; strong alkalies; strong acids. Butyl acetates may form explosive mixture with air; reacts with water, on standing, to form acetic acid and n-butyl alcohol. Violent reaction with strong oxidizers and potassium-tert-butoxide. Dissolves rubber, many plastics, resins and some coatings. May accumulate static electrical charges, and may cause ignition of its vapors

• 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.

• Vorsichtsmaßnahmen

  If exposures to tert-butyl acetate or a solution in work areas gets into the eyes, immediately fl ush the eyes with large amounts of water for a minimum of 15 min, lifting the lower and upper lids occasionally. Always use safety goggles or eye protection in combination with breathing protection.

tert-Butyl acetate Upstream-Materialien And Downstream Produkte

tert-Butylacetat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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