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Jeneng Produk: |
2-methylpyrazine |
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Padhanane: |
2-methylpyrazine, 98%; 3-methylpyrazine; = 99,0%; 2-methylpyrazine, 2-metilpyrazine kanggo sintesis; 2-metilpyrazine, 97 +%; metilpyrazine, 2- |
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CAS: |
109-08-0 |
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Mf: |
C5H6N2 |
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Mw: |
94.11 |
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EineCs: |
203-645-8 |
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File mol: |
109-08-0.mol |
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Titik lebur |
-29 ° C (lit.) |
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Titik Giling |
135 ° C761 MM Hg (Lit.) |
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Kapadhetan |
1.03 g / ml ing 25 ° C (lit.) |
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FEMA |
3309 | 2-methylpyrazine |
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Indeks Refleksi |
N20 / d 1.504 (lit.) |
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FP |
122 ° F |
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Temp panyimpenan. |
Wilayah flammables |
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PKA |
1.45 (ing 27 ℃) |
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Formulir |
Cairan |
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Werna |
Warna tanpa warna nganti rada kuning |
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Kelarutan banyu |
Ora sengaja ing banyu. |
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Jecfa Nomer |
761 |
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Brn |
105778 |
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Incipey |
Chwjjavavhzevtj-uhfffaoysa-n |
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Rujukan Database CAS |
109-08-0 (referensi database CAS) |
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Cathetan Kimia NIST |
Pyrazine, metil- (109-08-0) |
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Sistem Registri EPA |
Pyrazine, metil- (109-08-0) |
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Kode Hazard |
Xn, xi, f |
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Pernyataan Resiko |
10-22-36 / 37/38 |
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Pratelan safety |
26-36-16 |
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Ridadr |
PBB 1993 3 / PG 3 |
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WGK Jerman |
3 |
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RTEK |
UQ3675000 |
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Tsca |
Ya |
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Hazardclass |
3 |
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Packinggroup |
III |
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Kode hs |
29339990 |
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Properties Kimia |
2-methylpyrazine duwe nutty, coklat, ijo, panggang, coklat, ambu ora enak. |
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Properties Kimia |
ora ana warna tanpa warna kuning |
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Preparation |
Saka asam karboksilat sing cocog; dening dehidrogenasi katalitik 2-metil-pipera; Kanthi kondensasi saka metil glyoxal karo etilenediamin |
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Nilai ambang Aroma |
Deteksi: 60 ppb nganti 100 ppm |
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Nilai ambang rasa |
Karakteristik rasa ing 75 ppm: nutty, coklat, musty, panggang lan astringen |
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Gambar Keamanan |
Beracun kanthi beracun ingestion lan rute intraperitoneal. Data Mutasi. Cairan sing bisa dibakar nalika kapapar panas, cemlorot, utawa geni. Bisa nanggepi bahan sing dioksidasi. Kanggo nglawan geni, gunakake semprotan banyu, umpluk, bahan kimia garing, CO2. Nalika digawe panas kanggo bosok, ngetokake wasap sing beracun saka NOX. |
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Metode pemurnian |
Ngresiki liwat pakean lan distil gratis dhasar. Partai kasebut duwe M133-134o (saka etoh). [Wiggins & Wise J Che Soc 4780 1956, Bailstein 23 III / IV 911, 23/5 v 386.] |
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Bahan mentah |
Ethyleniumine -> Methylglyoxal -> 2-methylpiperazine |
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Produk Preparation |
Tetramethylpyrazine -> Asam 5-Methyl-2-Pyrazinecarboxicsic |
