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2-Methyl-pyrazin

2-Methylpyrazine Struktur
109-08-0
CAS-Nr.
109-08-0
Bezeichnung:
2-Methyl-pyrazin
Englisch Name:
2-Methylpyrazine
Synonyma:
Pyrazine, methyl-;METHYLPYRAZINE;3-Methylpyrazine;2-METHYL-1,4-DIAZINE;MPZ;FEMA 3309;FEMA 3616;Methylpiazine;methyl-pyrazin;FEMA NUMBER 3309
CBNumber:
CB0237950
Summenformel:
C5H6N2
Molgewicht:
94.11
MOL-Datei:
109-08-0.mol

2-Methyl-pyrazin Eigenschaften

Schmelzpunkt:
-29 °C (lit.)
Siedepunkt:
135 °C/761 mmHg (lit.)
Dichte
1.03 g/mL at 25 °C (lit.)
FEMA 
3309 | 2-METHYLPYRAZINE
Brechungsindex
n20/D 1.504(lit.)
Flammpunkt:
122 °F
storage temp. 
2-8°C
L?slichkeit
>20.87 mg/mL in EtOH with ultrasonic; >49.9 mg/mL in DMSO;
pka
1.45(at 27℃)
Aggregatzustand
Liquid
Farbe
Clear colorless to slightly yellow
Geruch (Odor)
at 1.00 % in dipropylene glycol. nutty cocoa roasted chocolate peanut green
Geruchsart
nutty
Wasserl?slichkeit
Fully miscible in water.
JECFA Number
761
BRN 
105778
InChIKey
CAWHJQAVHZEVTJ-UHFFFAOYSA-N
LogP
0.18
CAS Datenbank
109-08-0(CAS DataBase Reference)
NIST chemische Informationen
Pyrazine, methyl-(109-08-0)
EPA chemische Informationen
Pyrazine, methyl- (109-08-0)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher Xn,Xi,F
R-S?tze: 10-22-36/37/38
S-S?tze: 26-36-16
RIDADR  UN 1993 3/PG 3
WGK Germany  3
RTECS-Nr. UQ3675000
TSCA  Yes
HazardClass  3
PackingGroup  III
HS Code  29339990
Toxizit?t mouse,LD50,intraperitoneal,1820mg/kg (1820mg/kg),Toxicology and Applied Pharmacology. Vol. 17, Pg. 244, 1970.
Bildanzeige (GHS) GHS hazard pictogramsGHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H226 Flüssigkeit und Dampf entzündbar. Entzündbare Flüssigkeiten Kategorie 3 Warnung
H302 Gesundheitssch?dlich bei Verschlucken. Akute Toxizit?t oral Kategorie 4 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P270, P301+P312, P330, P501
Sicherheit
P210 Von Hitze, hei?en Oberfl?chen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.
P233 Beh?lter dicht verschlossen halten.
P240 Beh?lter und zu befüllende Anlage erden.
P241 Explosionsgeschützte [elektrische/Lüftungs-/ Beleuchtungs-/...] Ger?te verwenden.
P242 Nur funkenfreies Werkzeug verwenden.
P301+P312 BEI VERSCHLUCKEN: Bei Unwohlsein GIFTINFORMATIONSZENTRUM/Arzt/... (geeignete Stelle für medizinische Notfallversorgung vom Hersteller/Lieferanten anzugeben) anrufen.

2-Methyl-pyrazin Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R10:Entzündlich.
R22:Gesundheitssch?dlich beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-S?tze Betriebsanweisung:

S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S16:Von Zündquellen fernhalten - Nicht rauchen.

Beschreibung

2-Methylpyrazine has an odor threshold in water variously reported at 60,000 or 105,000 ppb. May be prepared from the corresponding carboxylic acid; by catalytic dehydrogenation of 2-methyl-piperazine; by condensation of methylglyoxal with ethylenediamine.

Chemische Eigenschaften

2-Methylpyrazine has a nutty, cocoa, green, roasted, chocolate, meaty odor.

Occurrence

Reported found in bakery products, roasted barley, cocoa products, coffee, dairy products, cooked meats, peanuts, filberts, pecans, popcorn, potato chips, rum and whiskey, soy product, roasted filberts, roasted almonds, guava, papaya, asparagus, kohlrabi, baked and fried potato, milk, boiled egg, smoked fish, beer, coffee, sesame seed, rice, sukiyaki, buckwheat, sweet corn, corn tortillas, malt, wort, wild rice, okra, crayfish, clam, squid and maté.

Verwenden

2-Methylpyrazine is used as flavoring agents in bread fresh bread, butter, chocolate, chocolate cocoa, coffee, meat roasted, nut almond.

synthetische

From corresponding carboxylic acid; by catalytic dehydrogenation of 2-methyl-piperazine; by condensation of methylglyoxal with ethylenediamine

Allgemeine Beschreibung

2-Methylpyrazine is an alkyl-substituted pyrazine used as a key intermediate in the synthesis of pyrazineamide, an anti-tubercular drug.

Sicherheitsprofil

Moderately toxic by ingestion and intraperitoneal routes. Mutation data reported. Flammable liquid when exposed to heat, sparks, or flame. Can react with oxidizing materials. To fight fire, use water spray, foam, dry chemical, CO2. When heated to decomposition it emits highly toxic fumes of NOx.

l?uterung methode

Purify it via the picrate and distil the free base. The picrate has m133-134o(from EtOH). [Wiggins & Wise J Chem Soc 4780 1956, Beilstein 23 III/IV 911, 23/5 V 386.]

2-Methyl-pyrazin Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


2-Methyl-pyrazin Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 479)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Hebei Weibang Biotechnology Co., Ltd
+8615531157085
abby@weibangbio.com China 8810 58
Hebei Mojin Biotechnology Co., Ltd
+86 13288715578 +8613288715578
sales@hbmojin.com China 12835 58
Hebei Yanxi Chemical Co., Ltd.
+8617531190177
peter@yan-xi.com China 5857 58
Hebei Chuanghai Biotechnology Co,.LTD
+86-13131129325
sales1@chuanghaibio.com China 5889 58
Hebei Zhuanglai Chemical Trading Co.,Ltd
+8613343047651
admin@zlchemi.com China 3002 58
Shandong Deshang Chemical Co., Ltd.
+86-0531-8875-2665 +8613153039501
info@deshangchem.com China 662 58
JINING XINHE CHEMICAL CO., LTD
+8615318402391
sales@xinhepharma.com China 809 58
Capot Chemical Co.,Ltd.
+86-(0)57185586718 +86-13336195806
sales@capot.com China 29791 60
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21634 55
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418679 +8618949832763
info@tnjchem.com China 2986 55

109-08-0(2-Methyl-pyrazin)Verwandte Suche:


  • 2-methyl-1,4-diazinen
  • 2-METHYLPYRAZINE
  • FEMA NUMBER 3309
  • FEMA 3616
  • FEMA 3309
  • METHYLPYRAZINE, 2-
  • MPZ
  • 2-methyl-pyrazin
  • methyl-pyrazin
  • Pyrazine, 2-methyl-
  • 2-METHYLPYRAZINE, 99+%
  • 2-METHYLPYRAZINE 99+% FCC
  • Methylpiazine
  • methylpyrazine,2-methylpyrazine
  • METHYLPYRAZINE, 2-(SG)
  • 2-METHYL PYRAZINE FEMA NO.3309
  • 2-METHYLPYRAZINE 2-METHYLPYRAZINE
  • 2-METHYL PYRAZINE pure
  • Methylpyrazine, 99+%
  • 2-Methylpyrazine ,98%
  • 2-METHYLPYRAZINE FOR SYNTHESIS
  • 2-Methylpyrazine, 97+%
  • 2-Methylpyrazine >=99.0%
  • 2-Methylpyrazine, 99+ % 25GR
  • Glucosamine Impurity 5
  • 2-Methylpyrazine 2
  • 2-methylpyrazine reference substance
  • 2-methylpyrazine CRS
  • 2-Methylpyrazine>
  • Pyrazine Impurity 1 (2-Methylpyrazine)
  • Recombinant Human MPZ Protein, His Tag
  • 2-Methylpyrazine USP/EP/BP
  • Glucosamine sulphate Impurity 5
  • 2-METHYL-1,4-DIAZINE
  • METHYLPYRAZINE
  • Pyrazine, methyl-
  • 3-Methylpyrazine
  • 2,3-Diethyl-5-methylpyrazine 18138-04-0
  • Glucosamine sulfate Impurity 15
  • 109-08-0
  • -NCCH3CHNCHCH
  • Mono- & Polyalkylpyrazines
  • Pyrazines
  • Heterocyclic Building Blocks
  • Building Blocks
  • Pyrazine compounds
  • Building Blocks
  • Heterocyclic Building Blocks
  • Alphabetical Listings
  • Flavors and Fragrances
  • M-N
  • Mono- & Polyalkylpyrazines
  • pyrazine Flavor
  • Pyrazine
  • Pyrazines
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