Isopentylacetat

Bezeichnung:Isopentylacetat

CAS-Nr123-92-2

Englisch Name:Isoamyl acetate

CBNumberCB7178555

SummenformelC7H14O2

Molgewicht130.18

MOL-Datei123-92-2.mol

Synonyma

Isopentylacetat

3-Methylbutylacetat

Isoamylacetat

Isopentylacetat physikalisch-chemischer Eigenschaften

Schmelzpunkt	-78 °C (lit.)
Siedepunkt	142 °C/756 mmHg (lit.)
Dichte	0.876 g/mL at 25 °C (lit.)
Dampfdichte	4.5 (vs air)
Dampfdruck	5 mm Hg ( 25 °C)
Brechungsindex	n20/D 1.4(lit.)
FEMA	2055 \| ISOAMYL ACETATE
Flammpunkt	77 °F
storage temp.	Store at +5°C to +30°C.
Löslichkeit	ethanol: soluble1ml/3ml, clear, colorless (60%ethanol)
Farbe	Clear Colorless
Geruch (Odor)	Banana-like odor
Explosionsgrenze	1-10%(V)
Geruchsart	fruity
Wasserlöslichkeit	0.20 g/100 mL. Slightly soluble
JECFA Number	43
Merck	14,5111
BRN	1744750
Henry's Law Constant	10.25 at 37 °C (static headspace-GC, Bylaite et al., 2004)
Expositionsgrenzwerte	TLV-TWA 100 ppm (～530 mg/m³) (ACGIH, MSHA, and OSHA); TLV-STEL 125 ppm (～655 mg/m³); IDLH 3000 ppm (NIOSH).
Dielectric constant	5.6（20℃）
LogP	2.7 at 35℃
CAS Datenbank	123-92-2(CAS DataBase Reference)
NIST chemische Informationen	1-Butanol, 3-methyl-, acetate(123-92-2)
EPA chemische Informationen	Isoamyl acetate (123-92-2)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	10-66-36/37/38-R66-R10
S-Sätze:	23-25-2-36/37/39-26-16-S25-S23-S2
RIDADR	UN 1104 3/PG 3
OEB	A
OEL	TWA: 100 ppm (525 mg/m3)
WGK Germany	1
RTECS-Nr.	NS9800000
Selbstentzündungstemperatur	680 °F
TSCA	Yes
HazardClass	3
PackingGroup	III
HS Code	29153900
Giftige Stoffe Daten	123-92-2(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rat > 5000 mg/kg
IDLA	1,000 ppm

Gefahreninformationscode (GHS)

Isoamyl acetate Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
PHYSIKALISCHE GEFAHREN
Der Dampf vermischt sich leicht mit Luft.
CHEMISCHE GEFAHREN
Reagiert sehr heftig mit starken Oxidationsmitteln unter Feuer- und Explosionsgefahr. Greift einige Harze an.
ARBEITSPLATZGRENZWERTE
TLV: 50 ppm (als TWA); 100 ppm (als STEL); (ACGIH 2005).
MAK: 50 ppm, 270 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(1); Schwangerschaft: Gruppe D (DFG 2006).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation der Dämpfe und durch Verschlucken.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Der Dampf reizt die Augen und die Atemwege. Exposition gegenüber hoher Dampfkonzentration kann zu Bewusstlosigkeit führen.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Die Flüssigkeit entfettet die Haut.
LECKAGE
Ausgelaufene Flüssigkeit möglichst in abdichtbaren Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen.
R-Sätze Betriebsanweisung:
R10:Entzündlich.
R66:Wiederholter Kontakt kann zu spröder oder rissiger Haut führen.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S25:Berührung mit den Augen vermeiden.
S2:Darf nicht in die Hände von Kindern gelangen.
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.
S16:Von Zündquellen fernhalten - Nicht rauchen.
Beschreibung
In commercial practice amyl invariably means isoamyl, unless it is prefaced by the n- for normal. Isoamyl acetate has a powerful, fruity odor with a bittersweet taste reminiscent of pear. If impure, the odor is strong, penetrating, and almost shocking. Usually prepared by esterification of commercial isoamyl alcohol with acetic acid.
Chemische Eigenschaften
Isoamyl Acetate is a strongly fruity-smelling liquid and has been identified in many fruit aromas. It is the main component of banana aroma and is, therefore, also used in banana flavors.
All isomers of amyl acetate are highly flammable, colorless to yellow, watery liquids.
Isoamyl acetate has a fruity, banana, sweet, fragrant, powerful odor with a bittersweet taste reminiscent of pear. If impure, the odor is strong, penetrating and almost shocking. In commercial practice, amyl invariably means isoamyl.
Physikalische Eigenschaften
Clear, colorless liquid with a banana or pear-like odor. Odor threshold concentration is 7 ppm (quoted, Keith and Walters, 1992). A detection odor threshold concentration of 18 μg/m³ (3.4 ppbv) was determined by Katz and Talbert (1930).
Occurrence
Reported to be found in a number of naturally occurring products, including apple, banana, cocoa bean, coffee, cognac, grape, peach, pear, pineapple and strawberry
Verwenden
Isoamyl acetate is used to impart pear flavorto mineral waters and syrups, in perfumes, inthe manufacture of artificial silk or leather, inphotographic films, in dyeing textiles, and asa solvent.
Verwenden
Sting pheromone of the honeybee.1
Verwenden
banana oil is a carrier oil. The banana family is of more interest for its nutritional value rather than for its botanical properties. The use of plantain juice as an antidote for snake bites has been reported in parts of Southeast Asia since 1916.
Verwenden
In alcohol solution as a pear flavor in mineral waters and syrups; as solvent for old oil colors, for tannins, nitrocellulose, lacquers, celluloid, and camphor; swelling bath sponges; covering unpleasant odors, perfuming shoe polish; manufacture of artificial silk, leather or pearls, photographic films, celluloid cements, waterproof varnishes, bronzing liquids, and metallic paints; dyeing and finishing textiles. A special grade of the amyl acetate has been used for burning in the Hefner lamp serving as a photometric standard.
Definition
ChEBI: The acetate ester of isoamylol.
synthetische
By the esterification of commercial isoamyl alcohol with acetic acid
Vorbereitung Methode
The commerical-grade isoamyl acetate is prepared by the esterification of amyl alcohol (often fusel oil) with acetic acid and a small amount of sulfuric acid as the catalyst .
Taste threshold values
FEMA PADI: 24.491 mg
Allgemeine Beschreibung
Oily liquid; colorless; banana odor. Floats and mixes with water. Flammable, irritating vapor is produced .
Air & Water Reaktionen
Highly flammable. Insoluble in water.
Reaktivität anzeigen
Isoamyl 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. Isoamyl acetate can react violently with oxidizing materials, nitrates, strong alkalis and strong acids.
Hazard
Flammable, moderate fire risk. Irritant. Explosive limits in air 1–7.5%.
Health Hazard
Isoamyl acetate exhibits low toxicity; thetoxic effects are comparable to those of n amyl acetate. The toxic symptoms includeirritation of the eyes, nose, and throat;fatigue; increased pulse rate; and narcosis.Inhalation of its vapors at 1000 ppm for30 minutes may cause irritation, fatigue, andrespiratory distress in humans. It is more narcotic than are the lower acetic esters. TheLD50 value in rabbits is on the order of7000 mg/kg.
Brandgefahr
FLAMMABLE. Flashback along vapor trail may occur. Vapor may explode if ignited in an enclosed area. When heated emits acrid fumes. When exposed to flames can react vigorously with reducing materials.
Flammability and Explosibility
Flammable
mögliche Exposition
(n-isomer): Primary irritant (w/o allergic reaction), (sec-isomer) Human Data. Amyl acetates are used as industrial solvents and in the manufacturing and dry-cleaning industry; making artificial fruit-flavoring agents; cements, coated papers, lacquers; in medications as an inflammatory agent; pet repellents, insecticides and miticide. Many other uses.
Carcinogenicity
Not listed by ACGIH, California Proposition 65, IARC, NTP, or OSHA.
Source
Identified among 139 volatile compounds identified in cantaloupe (Cucumis melo var. reticulates cv. Sol Real) using an automated rapid headspace solid phase microextraction method (Beaulieu and Grimm, 2001).
Environmental Fate
Chemical/Physical. Slowly hydrolyzes in water forming 3-methyl-1-butanol and acetic acid.
Versand/Shipping
UN1993 Flammable liquids, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid, Technical Name Required.
läuterung methode
Dry the acetate with finely divided K2CO3 and fractionally distil it. [Beilstein 2 IV 157.]
Inkompatibilitäten
Vapors may form explosive mixture with air. 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, nitrates. May soften certain plastics.
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. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.

Isoamyl acetate Upstream-Materialien And Downstream Produkte

Isopentylacetat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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