Ethylbutyrat Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R10:Entzündlich.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Beschreibung
Ethyl butyrate, also known as ethyl butanoate, or butyric ether, is an ester with the chemical formula CH
3CH
2CH
2COO.CH
2CH
3.It is soluble in propylene glycol, paraffin oil, and kerosene.It has a fruity odor, similar to pineapple.
Chemische Eigenschaften
Ethyl butyrate is a colorless liquid. Pineapple
odor. The Odor Threshold is 0.015 ppm.
Occurrence
Identified by gas chromatography in olive oil and other vegetable oils. Reported found in apple, banana, citrus
peel oils and juices, cranberry, blueberry, black currants, guava, grapes, papaya, strawberry, onion, leek, cheeses, chicken, beef, beer,
cognac, rum, whiskies, cider, sherry, grape wines, coffee, honey, soybeans, olives, passion fruit, plums, mushroom, mango, fruit
brandies, kiwifruit, mussels and pawpaw.
Verwenden
It is commonly used as artificial flavoring resembling orange juice or pineapple in alcoholic beverages (e.g. martinis, daiquiris etc.), as a solvent in perfumery products, and as a plasticizer for cellulose. In addition, ethyl butyrate is often also added to orange juice, as most associate its odor with that of fresh orange juice.
Ethyl butyrate is one of the most common chemicals used in flavors and fragrances. It can be used in a variety of flavors: orange (most common), cherry, pineapple, mango, guava, bubblegum, peach, apricot, fig, and plum. In industrial use, it is also one of the cheapest chemicals, which only adds to its popularity.
synthetische
By esterification of n-butyric acid with ethyl alcohol in the presence of Twichell’s reagent or MgCI2; also by heating
n-butyl alcohol and ethanol over CuO + UO3 catalyst at 270°C
Vorbereitung Methode
Ethyl Butyrate can be synthesized by reacting ethanol and butyric acid. This is a condensation reaction, meaning water is produced in the reaction as a byproduct.
Allgemeine Beschreibung
A clear colorless liquid with a pineapple-like odor. Flash point 78°F. Less dense than water and insoluble in water. Vapors heavier than air.
Air & Water Reaktionen
Highly flammable. Insoluble in water.
Reaktivität anzeigen
Ethyl butyrate 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. May attack some forms of plastics [USCG, 1999].
Hazard
Irritant to eyes and mucous membranes,
narcotic in high concentration. Flammable, dangerous fire risk.
Health Hazard
Inhalation or ingestion causes headache, dizziness, nausea, vomiting, and narcosis. Contact with liquid irritates eyes.
Brandgefahr
Behavior in Fire: Vapor is heavier than air and may travel to a source of ignition and flash back. Containers may explode in fire.
Chemische Reaktivität
Reactivity with Water: No reaction; Reactivity with Common Materials: May attack some forms of plastics; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
Sicherheitsprofil
Wdly toxic by
ingestion. A skin irritant. Flammable liquid
when exposed to heat or flame; can react
vigorously with oxidizing materials. When
heated to decomposition it emits acrid
smoke and irritating fumes. See also
ESTERS.
mögliche Exposition
Ethyl butyrate, and aldehyde, is used
in flavorings, extracts, perfumery, and as a solvent.
Carcinogenicity
Not listed by ACGIH, California
Proposition 65, IARC, NTP, or OSHA.
Versand/Shipping
UN1180; UN1178 Ethyl butyrate, Hazard Class: 3;
Labels: 3-Flammable liquid
läuterung methode
Dry the ester with anhydrous CuSO4 and distil it under dry nitrogen. [Beilstein 2 IV 787.]
Inkompatibilitäten
Vapor explosive mixture with air. Ethers
can act as bases. They form salts with strong acids and
addition complexes with Lewis acids. The complex
between diethyl ether and boron trifluoride is an example.
Ethers may react violently with strong oxidizing agents. In
other reactions, which typically involve the breaking of the
carbon-oxygen bond, ethers are relatively inert.
Incompatible with alkaline materials, strong acids, oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause
fires or explosions. Keep away from strong bases and heat
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
Ethylbutyrat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
