1-Phenylethylacetat

Bezeichnung:1-Phenylethylacetat

CAS-Nr93-92-5

Englisch Name:Styralyl acetate

CBNumberCB8335113

SummenformelC10H12O2

Molgewicht164.2

MOL-Datei93-92-5.mol

Synonyma

1-Phenylethylacetat

1-Phenylethylacetat physikalisch-chemischer Eigenschaften

Schmelzpunkt	-60°C
Siedepunkt	94-95 °C12 mm Hg(lit.)
Dichte	1.028 g/mL at 25 °C(lit.)
Dampfdruck	5.5Pa at 20℃
FEMA	2684 \| ALPHA-METHYLBENZYL ACETATE
Brechungsindex	n20/D 1.494(lit.)
Flammpunkt	196 °F
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	Almost insoluble in water, soluble in alcohol and oils.
Aggregatzustand	liquid
Wichte	1.04
Farbe	Colorless
Geruch (Odor)	at 10.00 % in dipropylene glycol. green leafy gardenia rhubarb musty
Geruchsart	green
Wasserlöslichkeit	1.27g/L at 20℃
JECFA Number	801
LogP	2.5
CAS Datenbank	93-92-5(CAS DataBase Reference)
NIST chemische Informationen	Benzenemethanol, «alpha»-methyl-, acetate(93-92-5)
EPA chemische Informationen	Benzenemethanol, .alpha.-methyl-, acetate (93-92-5)

Sicherheit

S-Sätze:	24/25
RIDADR	NA 1993 / PGIII
WGK Germany	1
RTECS-Nr.	DO9410000
Selbstentzündungstemperatur	450 °C
HS Code	2915 39 00
Toxizität	LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 5000 mg/kg

Gefahreninformationscode (GHS)

Styralyl acetate Chemische Eigenschaften,Einsatz,Produktion Methoden

S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Beschreibung
α-Methylbenzyl acetate has an intensive green odor suggestive of gardenia with a bitter, acrid taste, interesting on dilution. May be prepared by acetylation of methyl phenyl carbinol; from benzaldehyde by reacting with magnesium methyl bromide and subsequent acetylation; from 1-bromoethylbenzene and silver acetate in acetic acid.
Chemische Eigenschaften
CLEAR COLOURLESS TO PALE YELLOWISH LIQUID
Chemische Eigenschaften
α-Methylbenzyl acetate has an intensive green odor suggestive of gardenia and a bitter, acrid taste, interesting on dilution.
Occurrence
Reported found in gardenia flower oil and avocado.
Verwenden
Styralyl Acetate is a freshening compound with Alkoxylated Phenols.
Styralyl acetate finds extensive use in flavor compositions, particularly the "sharp"-fruity types, Pineapple, Apricot, Gooseberry, Apple, but also in Plum, Peach and many berry or fruit complexes.
The concentration is about 1 to 30 ppm in the finished product.
synthetische
By acetylation of methyl phenyl carbinol; from benzaldehyde by reacting with magnesium methyl bromide and subse quent acetylation; from 1-bromoethylbenzene and silver acetate in acetic acid.
Definition
ChEBI: 1-Phenylethyl acetate is a carboxylic ester. It is functionally related to a benzyl alcohol.
Taste threshold values
Taste characteristics at 12.0 ppm: fruity, berry, green, seedy and slightly nutty.
Synthesis Reference(s)
Journal of the American Chemical Society, 88, p. 1833, 1966 DOI: 10.1021/ja00960a057
Synthetic Communications, 8, p. 33, 1978 DOI: 10.1080/00397917808062180
Flammability and Explosibility
Non flammable
Stoffwechsel
Although no published data exist on the metabolism of methylphenylcarbinyl acetate, it is likely that hydrolysis to the carbinol and acetic acid is the initial step. Williams (1959) reports studies in which 50% of a dose of (±)-methylphenylcarbinol given to rabbits was excreted as the glucuronide in the urine within 24 hr. There was some evidence of oxidation and demethylation, as mandelic and hippuric acids were found in the urine. Previously, El Masry, Smith

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