2-Cyano-4-methylpyridine (CAS# 1620-76-4)
Ihe ize ndụ na Nchekwa
| Akara egwu | Xi - mgbakasị ahụ |
| Koodu ihe egwu | R20/21/22 - na-emerụ ahụ site na iku ume, na kọntaktị na akpụkpọ ahụ ma ọ bụrụ na loro ya. R41 - Ihe ize ndụ nke mmebi anya dị njọ R37 / 38 - na-akpasu iwe na usoro iku ume na akpụkpọ ahụ. R22 - na-emerụ ma ọ bụrụ na iloro ya R36 / 37/38 - na-akpasu iwe na anya, usoro iku ume na akpụkpọ ahụ. |
| Nkọwapụta nchekwa | S22 - Ekula uzuzu. S36/37 - Yiri uwe nchebe kwesịrị ekwesị na uwe aka. S39 - Yiri anya / nchedo ihu. S26 - N'ihe banyere kọntaktị na anya, kpochaa ozugbo na ọtụtụ mmiri ma chọọ ndụmọdụ ahụike. S36 - Yiri uwe nchebe kwesịrị ekwesị. |
| NJ UN | 3276 |
| WGK Germany | 3 |
| Koodu HS | 29333990 |
| Klas Hazard | 6.1 |
| Otu nkwakọ ngwaahịa | III |
2-Cyano-4-methylpyridine (CAS # 1620-76-4) Ozi
| Ngwa | 2-cyano-4-methylpyridine bụ etiti etiti, nke enwere ike ibu ụzọ oxidized site na 4-methylpyridine iji kwadebe 4-Methyl-pyridine-N-oxide, wee dochie ya na otu cyano iji nweta. Enwere ike iji 4-methyl-pyridine-N-oxide kwadebe 4-methyl -2, 6-dicarboxypyridine, 4-methyl -2, 6-dicarboxypyridine bụ ihe na-emepụta pyridine bara uru nke ukwuu na ogige etiti dị oke mkpa, nke a na-ejikarị eme ihe. n'ọhịa nke ọgwụ. |
| nkwadebe | 4-methyl-pyridine-N-oxide (0.109g,1mmol), trimethylcyanosilane (0.119g,1.2mmol), H-diethyl phosphite (0.276g,2mmol), carbon tetrachloride (0.308g,2mmol), triethylamine (0.202g, 2 mmol) na acetonitrile 10ml n'ime a 50mL flask ọnụ atọ, meghachi omume na ụlọ okpomọkụ maka awa 6. Mgbe emechara mmeghachi omume ahụ, a na-ewepụ ihe mgbaze n'okpuru nrụgide na-ebelata ma kewapụ ya site na chromatography kọlụm (petroleum ether / ethyl acetate, V / V = 4: 1) iji nweta mmiri na-enweghị agba na-emepụta ihe na 80% mkpụrụ. |
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