2-Ethyl-3,-dimethylpyrazin

Bezeichnung:2-Ethyl-3,-dimethylpyrazin

CAS-Nr27043-05-6

Englisch Name:2-Ethyl-3,5-dimethylpyrazine

CBNumberCB7133235

SummenformelC8H12N2

Molgewicht136.19

MOL-Datei27043-05-6.mol

Synonyma

2-Ethyl-3,-dimethylpyrazin

2-Ethyl-3,-dimethylpyrazin physikalisch-chemischer Eigenschaften

Siedepunkt	180-181 °C(lit.)
Dichte	0.965 g/mL at 25 °C(lit.)
Brechungsindex	n20/D 1.5015(lit.)
FEMA	3149 \| 2-ETHYL-3,(5 OR 6)-DIMETHYLPYRAZINE
Flammpunkt	157 °F
storage temp.	2-8°C
Farbe	Colorless to Light yellow
Geruch (Odor)	at 0.10 % in dipropylene glycol. burnt coffee nutty roasted woody
Geruchsart	burnt
JECFA Number	775
CAS Datenbank	27043-05-6(CAS DataBase Reference)
EPA chemische Informationen	Pyrazine, 2-ethyl-3,?-dimethyl- (27043-05-6)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	22-36/37/38
S-Sätze:	26
WGK Germany	3
HS Code	2915.39.3500

Gefahreninformationscode (GHS)

2-Ethyl-3,5-dimethylpyrazine Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
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.
Chemische Eigenschaften
2-Ethyl-3,(5 or 6)-dimethylpyrazine has a toasted nut, sweet woody, roasted cocoa odor.
Chemische Eigenschaften
clear light yellow liquid
Occurrence
Reported found in Burley and Virginia tobacco, cooked beef, Swiss cheese, roasted barley, cocoa products, coffee, meat, peanuts, filberts, pecans, popcorn, rum and whiskey, soy products, cooked potato, fried pork, beer, corn, corn tortillas, malt and cooked shrimps.
Verwenden
2-Ethyl-3,(5 or 6)-dimethylpyrazine is a component of the alarm pheromone of fire ant, Solenopsis invicta. 2-Ethyl-3,(5 or 6)-dimethylpyrazine has shown to attract the phyorid fyl, Pseudacteon tricuspis.
synthetische
The 2-ethyl-3,5-dimethylpyrazine is obtained by alkylation of dimethyl-2, 6-pyrazine; the 2,5-dimethyl-3-ethylpyrazine is obtained by alkylation of 2,5-dimethylpyrazine with ethyllithium. A mixture of the two can be obtained by condensation of 2,3-pentanedione with propylenediamine. A mixture of the two is obtained from the side chain alkylation of trimethylpyrazine.
Definition
ChEBI: 2-Ethyl-3,5-dimethylpyrazine is a member of pyrazines.
Aroma threshold values
Detection: 15 to 43 ppm in water. Aroma characteristics at 1.0%: peanut nutty, caramel, coffee, musty cocoa, popcorn, pyridine, graham sweet with roasted undertones
Taste threshold values
Taste characteristics at 5 ppm: peanut, nut skin, brown, roasted hazelnut with coffee and chocolate nuances.

2-Ethyl-3,5-dimethylpyrazine Upstream-Materialien And Downstream Produkte

2-Ethyl-3,-dimethylpyrazin Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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