1-(Thiazol-2-yl)ethan-1-on

Bezeichnung:1-(Thiazol-2-yl)ethan-1-on

CAS-Nr24295-03-2

Englisch Name:2-Acetylthiazole

CBNumberCB6235983

SummenformelC5H5NOS

Molgewicht127.16

MOL-Datei24295-03-2.mol

Synonyma

1-(Thiazol-2-yl)ethan-1-on

1-(Thiazol-2-yl)ethan-1-on physikalisch-chemischer Eigenschaften

Schmelzpunkt	65.5°C
Siedepunkt	89-91 °C/12 mmHg (lit.)
Dichte	1.227 g/mL at 25 °C (lit.)
FEMA	3328 \| 2-ACETYLTHIAZOLE
Brechungsindex	n20/D 1.548(lit.)
Flammpunkt	173 °F
storage temp.	Inert atmosphere,Room Temperature
pka	0.05±0.10(Predicted)
Aggregatzustand	Powder or Crystals
Wichte	1.23
Farbe	White to slightly yellow
Geruch (Odor)	at 0.10 % in dipropylene glycol. nutty popcorn roasted peanuts hazelnut
Geruchsart	popcorn
Sensitive	Stench
JECFA Number	1041
BRN	109803
LogP	0.37
CAS Datenbank	24295-03-2(CAS DataBase Reference)
NIST chemische Informationen	2-Acetylthiazole(24295-03-2)
EPA chemische Informationen	Ethanone, 1-(2-thiazolyl)- (24295-03-2)

Sicherheit

Kennzeichnung gefährlicher	Xn,Xi
R-Sätze:	22-36-43-36/37/38
S-Sätze:	26-36/37-24/25-36
RIDADR	3334
WGK Germany	3
F	13
Hazard Note	Irritant/Stench
TSCA	T
HazardClass	STENCH
HS Code	29341000

Gefahreninformationscode (GHS)

2-Acetylthiazole Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R36:Reizt die Augen.
R43:Sensibilisierung durch Hautkontakt möglich.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
2-Acetylthiazole is a colorless to pale yellow liquid with green onion, herbal, grassy, hazelnuts, roasted meat, caramel, corn, and butter odor. Natural products are found in beef broth. Slightly soluble with water, soluble in most organic solvents. It is used in foods as antioxidant, as appearance control agent, and as flavoring ingredient.
Occurrence
2-Acetylthiazole is naturally found in raw asparagus, cooked asparagus, kohlrabi, cooked or boiled potatoes, turkey (roasted), raw chicken, boiled and cooked beef, grilled and roasted beef, pork liver, beer, Finnish whiskey, heated beans, other varieties of mushroom, rice bran, maize, and other natural sources.
Verwenden
2-Acetylthiazole can be used as a flavoring agent in food industries. It may be used as a food additive in the preparation of ′fragrant′ rice. It also was used in the preparation of triazolothiazoles, chiral alcohols and in aldol condensation reactions.
Definition
ChEBI: 2-Acetylthiazole is an aromatic ketone.
synthetische
2-Acetylthiazole is formed by oxidation of the corresponding carbinol using dichromate.
Aroma threshold values
Detection at 4 ppb
Taste threshold values
Taste characteristics at 30 ppm: corn chip with slightly musty background
Synthesis Reference(s)
The Journal of Organic Chemistry, 53, p. 1748, 1988 DOI: 10.1021/jo00243a029
Allgemeine Beschreibung
2-Acetylthiazole is a volatile flavoring substance generally formed by the Maillard reaction between an amino acid and carbonyl compounds. It is reported to occur in canned sweet corn products, cooked pine mushroom, cooked asparagus and roasted beef.
läuterung methode
Check NMR spectrum; if it is not too bad, distil it through an efficient column in a vacuum. The oxime sublimes at 140-145o, m 159o, and when crystallised from H2O has m 163-165.5o. [Erlenmeyer et al. Helv Chim Acta 31 1142 1948, Waisvisz et al. J Am Chem Soc 79 4524 1957, Menasseé et al. Helv Chim Acta 40 554 1957, Beilstein 27 IV 2617.]

2-Acetylthiazole Upstream-Materialien And Downstream Produkte

1-(Thiazol-2-yl)ethan-1-on Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

24295-03-2, 2-Acetylthiazole Verwandte Suche:

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