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Jeneng Produk: |
2-Methylpyrazine |
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Sinonim: |
2-Methylpyrazine, 98%; 3-Methylpyrazine; 2-Methylpyrazine> = 99.0%; 2-Methylpyrazine, 99+% 25GR; 2-METHYLPYRAZINE FOR SYNTHESIS; 2-Methylpyrazine, 97 +%; METHYLPYRAZINE; METHYLPYRAZIN |
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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 (surem) |
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Titik didih |
135 ° C761 mm Hg (lit.) |
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kapadhetan |
1,03 g / mL ing suhu 25 ° C (lit.) |
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FEMA |
3309 | 2-METHYLPYRAZINE |
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indeks bias |
n20 / D 1.504 (lit.) |
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Fp |
122 ° F |
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temp panyimpenan |
Area murub |
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pka |
1,45 (jam 27â „ƒ) |
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wujud |
Cairan |
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warna |
Cetha tanpa warna nganti kuning rada |
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Kelarutan Banyu |
Miscible kanthi kebak ing banyu. |
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Nomer JECFA |
761 |
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BRN |
105778 |
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InChIKey |
CAWHJQAVHZEVTJ-UHFFFAOYSA-N |
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Referensi CAS DataBase |
109-08-0 (Referensi CAS DataBase) |
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Referensi Kimia NIST |
Pyrazine, metil- (109-08-0) |
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Sistem Registrasi Bahan EPA |
Pyrazine, metil- (109-08-0) |
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Kode Bahaya |
Xn, Xi, F |
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Pernyataan Risiko |
10-22-36 / 37/38 |
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Pernyataan Keamanan |
26-36-16 |
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RIDADR |
UN 1993 3 / PG 3 |
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WGK Jerman |
3 |
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RTECS |
UQ3675000 |
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TSCA |
Nggih |
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HazardClass |
3 |
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PackingGroup |
III |
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Kode HS |
29339990 |
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Properti Kimia |
2-Methylpyrazine duwe nutty, koko, ijo, panggang, coklat, ambu ora enak. |
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Properti Kimia |
ora ana warna sing jelas dadi cairan sing rada kuning |
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Preparasi |
Saka asam karboksilat sing cocog; kanthi dehidrogenasi katalitik 2-metil-piperazine; kanthi kondensasi metil glikoksida karo etilenediamin |
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Nilai ambang ambu |
Deteksi: 60 ppb nganti 100 ppm |
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Nilai ambang rasa |
Karakteristik rasa ing 75 ppm: nutty, coklat, musty, panggang lan astringent |
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Profil Keamanan |
Cukup beracun kanthi konsumsi lan rute intraperitoneal. Dilaporake data mutasi. Cairan sing gampang kobong nalika kena panas, gosong utawa geni. Bisa reaksi karo bahan oksidasi. Kanggo nglawan kobongan, gunakake semprotan banyu, busa, bahan kimia garing, CO2. Yen digawe panas nganti dekomposisi, mula bakal ngetokake asap beracun saka NOx. |
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Metode Pemurnian |
Ngresiki liwat picrate lan nyaring basis gratis. Picrate duwe m133-134o (saka EtOH). [Wiggin & Wise J Chem Soc 4780 1956, Beilstein 23 III / IV 911, 23/5 V 386.] |
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Bahan baku |
Ethylenediamine -> Methylglyoxal -> 2-Methylpiperazine |
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Produk Preparasi |
Tetramethylpyrazine -> 5-Methyl-2-pyrazinecarboxylic acid |
